Grand Canyon National Park Asteraceae Checklist With Additional Information

As part of confirming the determination of Symphyotrichum falcatum in September 2006, I compiled an Asteraceae Checklist for the Grand Canyon with additional information, including bloom times and elevation ranges. That list, given below, is useful for quickly determining possible candidate identifications for a given specimen based on its location, elevation, month in which it was observed in bloom, whether the flowers had ligules or not, and the color of the ligules. It is also useful in quickly looking up the correspondence in plant scientific names between the current Grand Canyon Checklist and the 1987 Flora. The list contains 304 taxa.

The best way to use this list is to put it into a spreadsheet, where it can be more easily viewed and sorted on various fields. For example, if you observe a flower with white ligules at 5000 feet elevation in July, you can quickly eliminate a large number of possible determinations by sorting the list on ligules present; ligules white; elevation 5000 feet; bloom period including July. Note the following caveats when doing so:

Using the above example, you can first eliminate 110 taxa that are marked as having no ligules, leaving 194 taxa that either are marked has having ligules, or contain no marking in that field. You can then eliminate a further 136 taxa that have colors other than white, again retaining the taxa with no color indicated. This leaves 58 taxa. You can then eliminate the 15 taxa found only below 4500 feet (you must be conservative in rejecting taxa on elevation since floras rarely contain the highest and lowest actual elevations), and the 14 taxa found only above 6000 feet. This leaves 29 taxa. Finally, you can eliminate the 2 species that bloom only in May or earlier, and the 2 taxa that bloom only in September or later. That leaves just 25 taxa in which to search for the possible determination. Location information may rule out some of these quickly.

If you find no match in the remaining candidates, you perhaps were too strict in eliminating candidates based on elevation or bloom times, and should consider taxa just outside your search ranges.

Opening this page in most spreadsheet programs will put the table into spreadsheet format. Copying and then pasting the values will eliminate any residual html formatting.

The list consists of:

The table is not complete in every field, especially the presence of ligules, ligule color, locations, and synonyms, since my primary goal was to try to find possible candidates for the Symphyotrichum falcatum plants. For example, if I knew a given species could not be the identification, I generally didn't enter that information. At the time of my next visit to the Grand Canyon, I'll probably make the table more complete for every field.

The table is complete for the elevations and flowering period for all taxa present in the 1987 Grand Canyon Flora. If there is no entry for the 1987 Grand Canyon Flora Name, that taxon was not present in that Flora and is a more recent addition to the Grand Canyon Plant List, without such information available.

A non-native species is indicated by an asterisk before the Grand Canyon Plant List Name.

The flower color is generally the ligule color; if no ligules are present, it is the disk corolla color.

The five columns after the Flower Color are location information for the following places: North Rim (NR); South Rim (SR); Toroweap and western North Rim area (TWP); Inner Canyon (IC), everything below the rims including the Tonto Platform; Inner Gorge (IG), everything below the Tonto Platform or equivalent formation. Symbols are: c - common; u - uncommon; r - rare; x - present in that location without an abundance estimate.

Life cycles are: annual (a); biennial (b); perennial (p); perennial with somewhat woody lower stems (subshrub; ss); shrub (s).

The field Locations / Comments primarily contains information for taxa found in only a few locations. Sometimes those locations are vague (such as North Rim), which is why the elevation fields are empty.

Grand Canyon Plant List Name1987 Grand Canyon Flora NameElev min (feet)Elev max (feet)Ligules presentFlower colorNRSRTWPICIGLocations / CommentsFlower period beginFlower period endLife Cycle / Life FormSynonyms
Acamptopappus sphaerocephalusAcamptopappus sphaerocephalus12503200nyellow      410  
Achillea millefolium var. occidentalisAchillea millefolium var. occidentalis67009000ywhite to pinkcu    59p 
Acourtia wrightiiAcourtia wrightii12506000ypinkish-lavender      110  
*Acroptilon repens   nwhite to blue          
Adenophyllum porophylloidesDyssodia porophylloides14003000yyellow to red      45  
Ageratina herbaceaAgeratina herbacea75008500nwhite      78  
Agoseris aurantiacaAgoseris aurantiaca80008500yorangec     68p 
Agoseris glaucaAgoseris glauca79007900yyellowc     66p 
Agoseris glauca var. dasycephalaAgoseris glauca var. dasycephala  yyellowx    Kaibab Basin on North Rim    
Agoseris glauca var. laciniataAgoseris arizonica, Agoseris glauca var. laciniata; Agoseris glauca var. parviflora68009000yyellow      48  
Agoseris heterophyllaAgoseris heterophylla29002900yyellow      44  
Ambrosia acanthicarpaAmbrosia acanthicarpa12003000n       612  
Ambrosia artemisiifoliaAmbrosia artemisiifolia27102710n       99  
Ambrosia confertifloraAmbrosia confertiflora30004000n       511  
Ambrosia dumosaAmbrosia dumosa12004000n       33  
Ambrosia eriocentraAmbrosia eriocentra40005000n    x Clear Creek Trail at 4000 feet and Kaibab Trail near Redwall Limestone, Inner Canyon45  
Ambrosia psilostachyaAmbrosia psilostachya17001700n       1010  
Amphipappus fremontii ssp. spinosusAmphipappus fremontii ssp. spinosus12002200yyellow      35  
Anaphalis margaritaceaAnaphalis margaritacea25008400n       88  
Antennaria marginataAntennaria marginata74009000n       67  
Antennaria parvifoliaAntennaria parvifolia68009100nwhitec     57p 
Antennaria rosea ssp. aridaAntennaria arida81509000nwhitecc    67pAntennaria arida
Antennaria rosulataAntennaria rosulata81009000n       77  
*Anthemis cotula   ywhite          
Antheropeas lanosumEriophyllum lanosum12501250ywhite   u  44 Eriophyllum lanosum
Antheropeas wallaceiEriophyllum wallacei12501250yyellow   u  44 Eriophyllum wallacei
Arnica chamissonis 88009000yyellowc     77p 
Arnica chamissonis ssp. foliosaArnica chamissonis ssp. foliosa88009000yyellowc     77p 
Arnica cordifoliaArnica cordifolia83008300yyellowx     57p 
Artemisia bigeloviiArtemisia bigelovii28007850n       89  
Artemisia campestris   n           
Artemisia campestris ssp. borealis var. scoulerianaArtemisia pacifica70008200n       78  
Artemisia carruthiiArtemisia carruthii50008200n       79  
Artemisia dracunculusArtemisia dracunculus30008800n       79  
Artemisia filifoliaArtemisia filifolia30003600n       810  
Artemisia frigidaArtemisia frigida45008650n       69  
Artemisia ludovicianaArtemisia ludoviciana12005500n       712  
Artemisia ludoviciana var. albula   n           
Artemisia novaArtemisia nova46008000n       89  
Artemisia tridentataArtemisia tridentata45008000nwhiteccc   79shrub 
Atrichoseris platyphyllaAtrichoseris platyphylla12002200ywhite    x 35a 
Baccharis brachyphyllaBaccharis brachyphylla22002800n       99  
Baccharis emoryiBaccharis emoryi12003700n       49  
Baccharis salicifoliaBaccharis salicifolia12003500n       312  
Baccharis sarothroidesBaccharis sarothroides12002100n       103  
Baccharis sergiloidesBaccharis sergiloides12002880n       810  
Baccharis wrightii   n           
Bahia dissectaBahia dissecta54009000yyellowcc c  810b 
Baileya multiradiataBaileya multiradiata12004200yyellow      48  
Baileya pleniradiataBaileya pleniradiata42004200yyellow      55  
Bebbia juncea var. asperaBebbia juncea var. aspera12003100n       311  
Bidens frondosaBidens frondosa12001200yyellow      99  
Brickellia atractyloidesBrickellia atractyloides12005500n       46  
Brickellia californicaBrickellia californica17007100n       510  
Brickellia coulteriBrickellia coulteri12003200n       410  
Brickellia grandifloraBrickellia grandiflora67007600n       79  
Brickellia longifoliaBrickellia longifolia12004800n       910  
Brickellia longifolia var. multifloraBrickellia multiflora  n      North Rim and Havasu Canyon99  
Brickellia microphylla var. scabraBrickellia scabra40005600n       911  
Brickellia oblongifolia   n           
Brickellia oblongifolia var. linifoliaBrickellia oblongifolia var. linifolia65007400n       56  
Calycoseris parryiCalycoseris parryi27004250yyellow  cc  45a 
*Carduus nutans   n           
*Centaurea biebersteinii   n           
*Centaurea diffusa   n           
*Centaurea solstitialis   n           
Chaenactis carphoclinia var. carphocliniaChaenactis carphoclinia var. attenuata18001800swhite to pinkish      35  
Chaenactis douglasiiChaenactis douglasii60008200swhite to pinkishu u   56b 
Chaenactis fremontiiChaenactis fremontii12002200swhite to pinkish      35  
Chaenactis macranthaChaenactis macrantha30004300swhite to pinkish      45  
Chaenactis stevioidesChaenactis stevioides; C.s. var. brachypappa26004500swhite to pink (pale yellow)      35  
Chaenactis xantianaChaenactis xantiana31003600swhite to pinkish     only from talus slopes in Havasu Canyon at 3100 feet and Cottonwood Canyon at 3600 feet44  
Chaetopappa ericoidesLeucelene ericoides25007000ywhite to +- pink ccc  48ssLeucelene ericoides
Chloracantha spinosaAster spinosus12003500ywhite    c 812pAster spinosus
*Chondrilla juncea   y           
Chrysothamnus depressusChrysothamnus depressus70007600n       89  
Chrysothamnus greeneiChrysothamnus greenei30007000n       710  
Chrysothamnus viscidiflorusChrysothamnus viscidiflorus52006500n       88  
Chrysothamnus viscidiflorus ssp. axillarisChrysothamnus viscidiflorus ssp. axillaris40006000n       99  
Chrysothamnus viscidiflorus ssp. lanceolatusChrysothamnus viscidiflorus ssp. lanceolatus21006500n       1010  
*Cichorium intybusCichorium intybus30007200yblue (pink, white)     South Rim near Zuni Point at 7200 feet and Paria River (CRM 1.0)49p 
Cirsium arizonicumCirsium arizonicum30007000npink c c  59b 
Cirsium arizonicum var. nidulumCirsium nidulum49008200n       58  
*Cirsium arvense   n           
Cirsium calcareumCirsium calcareum26508450n       68  
Cirsium foliosumCirsium foliosum90009000n       77  
Cirsium neomexicanumCirsium neomexicanum25006500n       55  
Cirsium ochrocentrumCirsium ochrocentrum42004200n       55  
Cirsium rothrockiiCirsium rothrockii  n x    North Rim without definite locality56  
Cirsium rydbergii   n           
Cirsium scariosum   n           
Cirsium undulatumCirsium undulatum15008500n       79  
*Cirsium vulgareCirsium vulgare30007000n       1010  
Cirsium wheeleriCirsium wheeleri66009000npinkcc    79b 
*Conyza canadensisConyza canadensis11806700n       710  
Conyza canadensis var. pusillaConyza canadensis var. pusilla  n      Toroweap and Diamond Creek    
*Crepis capillaris   yyellow          
Crepis intermediaCrepis intermedia70008200yyellow      57  
Crepis occidentalisCrepis occidentalis68007200yyellow      56  
Crepis runcinata ssp. glauca   yyellow          
Dicoria canescensDicoria canescens28002800n       1212  
Dicoria canescens ssp. brandegeeiDicoria brandegei12002900n       89  
Encelia farinosaEncelia farinosa12003600yyellow   cc 36s 
Encelia frutescensEncelia frutescens12004500nyellow      45  
Encelia frutescens var. resinosaEncelia frutescens var. resinosa  nyellow  xx      
Encelia resinifera ssp. tenuifolia    yellow          
Encelia virginensisEncelia virginensis10004000yyellow      210  
Enceliopsis nudicaulis   yyellow          
Ericameria cervinaHaplopappus cervinus50007500yyellowx  x Boysag Point, western North Rim; Grandview Trail89sHaplopappus cervinus
Ericameria laricifolia   yyellow          
Ericameria nauseosaChrysothamnus nauseosus24007900nyellowcccc  710s 
Ericameria nauseosa ssp. consimilis var. junceaChrysothamnus nauseosus ssp. junceus  n           
Ericameria nauseosa ssp. consimilis var. leiospermaChrysothamnus nauseosus ssp. leiospermus  n           
Ericameria nauseosa ssp. nauseosa var. glabrataChrysothamnus nauseosus ssp. graveolens?  n           
Ericameria nauseosa ssp. nauseosa var. hololeucaChrysothamnus nauseosus ssp. gnaphalodes  n           
Ericameria nauseosa ssp. nauseosa var. nauseosa   n           
Ericameria paniculataChrysothamnus paniculatus14501500n       1011  
Ericameria parryi var. nevadensisChrysothamnus parryi var. nevadensis68008000n       89  
Ericameria watsoniiHaplopappus watsonii70007000yyellow x   Grandview area99  
Erigeron caespitosus   ywhite to bluish     not in 1987 flora; kearney and peebles say "a collection at flagstaff, not seen, is cited by cronquist"68  
Erigeron canusErigeron canus69006900       near El Tovar, South Rim67p 
Erigeron concinnusErigeron concinnus30507600ywhite to pink to bluecccc  46p 
Erigeron concinnus var. subglaber               
Erigeron divergensErigeron divergens18008450ywhite to purplecc c  49a, b 
Erigeron eatoniiErigeron eatonii68008200ywhite      56p 
Erigeron eximiusErigeron eximius80008000       collected only in a wet meadow just north of Kanabownits Springs, North Rim88p 
Erigeron flagellarisErigeron flagellaris70009000  ccc   410b, p 
Erigeron formosissimusErigeron formosissimus71009100ylavendercc    69p 
Erigeron lobatusErigeron lobatus15003500ywhite? (drying blue)   c  106b 
Erigeron modestusErigeron modestus30007400        26b 
Erigeron oreophilusErigeron oreophilus  ywhite     known only from an old collection along the "North Kaibab Trail"  p 
Erigeron speciosus var. macranthusErigeron macranthus68009350yblue to lavender (whitish)oo    79pErigeron macranthus
Erigeron speciosus var. speciosus   yblue to lavender (whitish)          
Erigeron ursinusErigeron ursinus76009000  x     78  
Erigeron utahensisErigeron utahensis28505590ybluish  xx  56p 
Erigeron utahensis var. sparsifolius               
Erigeron utahensis var. utahensis               
Eurybia glaucaAster glaucodes18003600ylavender or purple   x  1010pAster glaucodes
Eurybia pulchraAster glaucodes var. pulcher30007700ylavender or purplexx x widespread along roadsides and open areas on rims; and on shaley slopes and along perennial side streams, Inner Canyon811pAster glaucodes var. pulcher
*Euthamia occidentalisSolidago occidentalis17003100yyellow      610  
Filago californicaFilago californica12502925n       35  
Flaveria macdougaliiFlaveria macdougalii17001850        81  
Gaillardia pinnatifidaGaillardia pinnatifida18757000yorange ccc  410p 
Gaillardia spathulata   yyellow     not in 1987 flora    
Gnaphalium exilifoliumGnaphalium exilifolium70008400n       79  
Gnaphalium palustreGnaphalium palustre11801180n       33  
Grindelia nuda var. aphanactisGrindelia aphanactis29007000yyellow u u  79bGrindelia aphanactis
Grindelia squarrosaGrindelia squarrosa74007400yyellow      88  
Grindelia squarrosa var. serrulataGrindelia squarrosa var. serrulata  yyellow     only from Hearst Ranch, South Rim    
Gutierrezia microcephalaGutierrezia microcephala12007000yyellow      81  
Gutierrezia sarothraeGutierrezia sarothrae15008000yyellowcc c  811s 
Helianthella microcephalaHelianthella microcephala62006200       reported only from Hermit Shale 1 mile below Powell Spring, near Powell Plateau77p 
Helianthella quinquenervisHelianthella quinquenervis79009000ypale yellow      78  
Helianthella uniflora   yyellow          
Helianthus annuusHelianthus annuus18756700yyellow c c  78a 
Helianthus anomalusHelianthus anomalus70007000yyellow      99  
Helianthus ciliarisHelianthus ciliaris  yyellow x   only along Highway 64 E roadside77  
Helianthus petiolarisHelianthus petiolaris26006500yyellow      89  
Heliomeris longifolia   yyellow-orange          
Heliomeris longifolia var. annuaViguiera annua14001400yyellow-orange      55  
Heliomeris longifolia var. longifoliaViguiera longifolia  yyellow-orangex    from "North Rim" without definite locality    
Heliomeris multifloraViguiera multiflora70008500yyellow-orangecc    710pViguiera multiflora
Heliomeris multiflora var. multiflora   yyellow-orange          
Heliomeris multiflora var. nevadensisViguiera multiflora var. nevadensis  yyellow-orangexx   Neal Spring, North Rim; 1.5 miles se of Grandview, South Rim    
Hesperodoria salicinaHaplopappus salicinus12004700       shaded limestone walls and seeps along Cottonwood Trail off Horseshoe Mesa, and Bright Angel Trail below second resthouse; k&p: Known only from the type locality911ssHaplopappus salicinus
Hesperodoria scopulorumHaplopappus scopulorum    xx   no definite localities other than "north rim" and "south rim"  ss 
Heterotheca fulcrataHeterotheca fulcrata72007400yyellow      89  
Heterotheca villosa   yyellowcccc  610p 
Heterotheca villosa var. foliosaHeterotheca villosa var. foliosa83008300yyellow      810  
Heterotheca villosa var. minorHeterotheca villosa var. hispida17508000yyellow      711  
Heterotheca villosa var. villosaHeterotheca villosa var. villosa33008600yyellow      610  
Heterotheca viscidaHeterotheca viscida45004500yyellow     only at Toroweap Point88  
*Hieracium aurantiacum   y           
Hieracium fendleriHieracium fendleri74008250y c     66  
Hymenoclea salsolaHymenoclea salsola12004500n       44  
Hymenopappus filifoliusHymenopappus filifolius  nyellowcc c  57p 
Hymenopappus filifolius var. lugensHymenopappus filifolius var. lugens45007900n       57  
Hymenopappus filifolius var. pauciflorusHymenopappus filifolius var. pauciflorus31003100n           
Hymenothrix loomisii   scream          
Hymenoxys cooperiHymenoxys cooperi71507500yyellow      78  
Hymenoxys richardsonii    yellow          
Hymenoxys richardsonii var. floribundaHymenoxys richardsonii var. floribunda65007400 yellow      79  
Hymenoxys subintegraHymenoxys subintegra79009000 yellow      78  
Isocoma acradeniaHaplopappus acradenius12003000n       91  
Isocoma acradenia var. acradenia   n           
Isocoma drummondiiHaplopappus drummondii25002700n       99  
Isocoma plurifloraHaplopappus heterophyllus  n      Robbers Roost, North Rim, and various Inner Canyon localities. We have not examined specimens and cannot verify its occurrence in the Park. All specimens from the Inner Gorge riparian zone originally identified as this species at Museum of Northern Arizona have been annotated to H. acradenius610  
Iva acerosaIva acerosa25003500n       810  
*Iva frutescens   n           
Lactuca ludovicianaLactuca ludoviciana50005000     u Only from Roaring Springs Canyon, Inner Canyon68b 
*Lactuca serriolaLactuca serriola24008400ypale yellow      610  
Layia glandulosaLayia glandulosa30004600ywhite to yellow      45  
*Leucanthemum vulgareChrysanthemum leucanthemum var. pinnatifidum74007400       only from Grandview Junction66  
Machaeranthera bigeloviiMachaeranthera bigelovii32008200yblue to purplex  x  89a, bDieteria bigelovii
Machaeranthera bigelovii var. bigeloviiMachaeranthera aquifolia32008500yblue to purple     flora of north america says this taxon is only in rocky mountains78 Dieteria bigelovii var. bigelovii
Machaeranthera bigelovii var. mucronataMachaeranthera mucronata80008900yblue to purplex    flora of north america says this taxon is only at kaibab plateau79 Dieteria bigelovii var. mucronata
Machaeranthera canescensMachaeranthera canescens28008000ypurplecc c  511b 
Machaeranthera canescens ssp. canescens var. incanaMachaeranthera tephrodes12303000ypurple      78  
Machaeranthera canescens ssp. glabra var. glabraMachaeranthera linearis 20004600ypurple      510  
Machaeranthera carnosa var. intricataAster intricatus50005000n      only from Toroweap Valley510 Aster intricatus
Machaeranthera gracilisHaplopappus gracilis18007400yyellow      510  
Machaeranthera grindelioidesHaplopappus nuttallii44008000n      has needle-toothed leaves55 Haplopappus nuttallii
Machaeranthera grindelioides var. grindelioides   n          Haplopappus nuttallii
Machaeranthera pinnatifida   yyellow  ccc 110pHaplopappus spinulosus
Machaeranthera pinnatifida ssp. gooddingii var. gooddingiiHaplopappus spinulosus var. gooddingii12004600yyellow      110  
Machaeranthera pinnatifida ssp. gooddingii var. paradoxa   yyellow          
Machaeranthera pinnatifida ssp. pinnatifida var. pinnatifidaHaplopappus spinulosus var. turbinellus30003000yyellow     only from Phantom Cannyon, Inner Canyon22  
Machaeranthera tanacetifoliaMachaeranthera tanacetifolia55005500yblue-purple  x  only from Toroweap Point99  
Madia glomerataMadia glomerata79008500sgreenish-yellow or purple-tinged      89  
Malacothrix clevelandiiMalacothrix clevelandii25004000        35a 
Malacothrix glabrataMalacothrix californica var. glabrata12004000yyellow   c  45aMalacothrix californica var. glabrata
Malacothrix sonchoidesMalacothrix sonchoides27003100yyellow      44  
Malacothrix torreyiMalacothrix sonchoides var. torreyi63006300yyellow      88  
Melampodium leucanthumMelampodium leucanthum12004000ywhite      55ss 
*Onopordum acanthium               
Oreochrysum parryiHaplopappus parryi80008250yyellow      89  
Packera hartiana   yyellow          
Packera multilobataSenecio multilobatus32009000yyellowcccc  58pSenecio multilobatus
Packera quercetorumSenecio quercetorum16003500yyellow      46  
Packera werneriifoliaSenecio werneriaefolius82008600syellow      66  
Parthenium incanumParthenium incanum22005600        910  
Pectis papposaPectis papposa12004500yyellow      410  
Perityle congestaPerityle congesta22009000n xxxx near head of South Kaibab Trail, South Rim; many locations68p 
Perityle emoryiPerityle emoryi15003000ywhite      45  
Petradoria pumilaPetradoria pumila25007900yyellow      78  
Peucephyllum schottiiPeucephyllum schottii12002700n       45  
Pleurocoronis plurisetaPleurocoronis pluriseta12003000n       45  
Pluchea odorata var. odorataPluchea purpurascens var. purpurascens12001325n       1011  
Pluchea sericeaTessaria sericea12003200n       36  
Porophyllum gracilePorophyllum gracile12003600npink    c 310p 
Prenanthella exiguaPrenanthella exigua22003000ywhite or light pink      55a 
Psathyrotes annuaPsathyrotes annua42005000n       57  
Psathyrotes piliferaPsathyrotes pilifera40004000n       89  
Psathyrotes ramosissimaPsathyrotes ramosissima40004000n       66  
Pseudognaphalium canescens ssp. canescensGnaphalium wrightii12003000n       15  
*Pseudognaphalium luteoalbum   n           
Pseudognaphalium macouniiGnaphalium macounii74008250n       89  
Pseudognaphalium stramineumGnaphalium chilense20003100n       510  
Psilostrophe sparsifloraPsilostrophe sparsiflora23007000yyellow ccc  48p 
Psilostrophe tagetinaPsilostrophe tagetina  yyellow     from Hermit Trail    
Pyrrocoma crocea var. crocea   yorange          
Pyrrocoma crocea var. genuflexaHaplopappus croceus var. genuflexa  ysaffron - orangex    only from North Rim with no definite locality710  
Rafinesquia californica   ywhite          
Rafinesquia neomexicanaRafinesquia neomexicana12004200ywhite      45  
Ratibida columniferaRatibida columnaris; Ratibida columnaris var. pulcherrima65007400yyellow u    89pRatibida columnaris
Sanvitalia abertiiSanvitalia abertii40007000yyellow      88  
Schkuhria multifloraBahia neomexicana65006500n      only from the Rowes Well Picnic area, where abundant between the road and the railroad track99 Bahia neomexicana
Senecio eremophilus var. macdougaliiSenecio eremophilus var. macdougalii80008200yyellow      89  
Senecio flaccidus var. flaccidusSenecio douglasii ssp. longilobus29005000yyellowc cc  49sSenecio douglasii ssp. longilobus
Senecio flaccidus var. monoensisSenecio douglasii var. monoensis42007100yyellow      89  
Senecio mohavensis   yyellow          
Senecio spartioidesSenecio spartioides70007000yyellow      99  
Senecio spartioides var. multicapitatusSenecio multicapitatus40007400yyellow      99  
Senecio wootoniiSenecio wootonii80008000yyellow      66  
Solidago canadensis   yyellow          
Solidago canadensis var. gilvocanescensSolidago canadensis var. gilvocanescens  yyellow     from "Grand Canyon" without definite locality    
Solidago canadensis var. scabraSolidago altissima17508500yyellowcc    710pSolidago altissima
Solidago missouriensisSolidago missouriensis20007500yyellow      410  
Solidago multiradiataSolidago multiradiata82008300yyellow          
Solidago nanaSolidago nana82009000yyellow      78  
Solidago simplex ssp. simplex var. nanaSolidago decumbens20002600yyellow      56  
Solidago velutinaSolidago sparsiflora17508300yyellow      610  
Solidago wrightii   yyellow          
*Sonchus asperSonchus asper12002850yyellow      28  
*Sonchus oleraceusSonchus oleraceus17003200yyellow      310  
Stephanomeria exiguaStephanomeria exigua21004500ywhite to pink      55  
Stephanomeria minor var. minorStephanomeria tenuifolia12757900ylavenderuu u6  59pStephanomeria tenuifolia
Stephanomeria parryi   ywhitish          
Stephanomeria paucifloraStephanomeria pauciflora12007900ylavender-pink      311  
Stephanomeria thurberiStephanomeria thurberi14507900ylavender      78  
Stylocline micropoidesStylocline micropoides18003700n       45  
Symphyotrichum ascendensAster adscendens82008200yviolet      88 Aster ascendens, Aster adscendens
Symphyotrichum divaricatum   ypink to violet         Aster subulatus var. ligulatus
Symphyotrichum falcatumVirgulus falcatus68008200ywhite (lavender)     1987 Flora: reported from pine forests at Cape Roya, Point Sublime, and Tiyo Point, North Rim; and near El Tovar and along East Rim Drive, South Rim; K&P: widely distributed in arizona, 5000-8000 feet, mostly in the pine belt, august to october.89 Virgulus falcatus, Aster commutatus var. crassulus
Symphyotrichum falcatum var. falcatum   ywhite (lavender)         Virgulus falcatus
Symphyotrichum foliaceum var. canbyiAster foliaceus var. burkei79008200ylavemder to purple      78 Aster foliaceus var. burkei
Symphyotrichum praealtum var. praealtumAster coerulescens  yviolet or purple     only from North Kaibab Trail55 Aster coerulescens
*Tanacetum vulgareTanacetum vulgare70007200        78  
*Taraxacum laevigatumTaraxacum laevigatum71507400yyellow      55  
*Taraxacum officinaleTaraxacum officinale30008800yyellow      310  
*Taraxacum officinale ssp. officinale   yyellow          
Tetradymia canescensTetradymia canescens68007500n       78  
Tetraneuris acaulis var. acaulis   yyellowcc c  410pActinea acaulis, Hymenoxys acaulis, Gaillardia acaulis, Actinea acaulis
Tetraneuris acaulis var. arizonicaHymenoxys acaulis var. arizonica50007900yyellow      410p 
Thelesperma subnudumThelesperma subnudum30757500        44p 
Thymophylla acerosaDyssodia acerosa32005550yyellow      410  
Thymophylla pentachaetaDyssodia pentachaeta12004850yyellow      312  
Thymophylla pentachaeta var. belenidiumDyssodia pentachaeta var. belenidium12004850yyellow          
Thymophylla pentachaeta var. pentachaeta   yyellow          
Townsendia exscapaTownsendia exscapa68507800ywhitecc    38p 
Townsendia incanaTownsendia incana53006000y       55a, b, p 
*Tragopogon dubiusTragopogon dubius28008200yyellowcc c  68b 
*Tragopogon porrifolius   ypurple          
Trixis californicaTrixis californica12003700yyellow    c 46s 
Uropappus lindleyiMicroseris linearifolia19004600yyellow      44  
Vanclevea stylosaVanclevea stylosa38003800       reported only from sands of mesa slope at CRM 1.5 R, Inner Gorge99s 
Verbesina encelioidesVerbesina encelioides32008300yyellowcc c  810a 
Verbesina encelioides ssp. exauriculata   yyellow          
Viguiera parishiiViguiera deltoidea var. parishii12001550yyellow      310  
Wyethia arizonica   yyellow          
Xanthium strumariumXanthium strumarium17004000n       410  
Xylorhiza tortifoliaXylorhiza tortifolia12005000ywhite or light blue  cc  35p 
Xylorhiza tortifolia var. imberbisXylorhiza tortifolia var. imberbis  ywhite or light bluex  x      
Zinnia grandifloraZinnia grandiflora              

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Copyright © 2006 by Tom Chester.
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Last Update: 23 September 2006