Plant Guide to South Kaibab Trail
Grand Canyon National Park

Including Pictures of Most Species

(Click on pictures to get the species information pages)

Introduction and Explanation of Plant Trail Guides

Highlights of This Trail
Fieldwork Dates and Summary of List Changes With Time
The Plant Guide
     Key to Plant Guide Information
     Introduction To The Linked Species Pages


The guide has been updated from the fieldwork on 4/25/09 and 4/26/09, but the rest of this page hasn't been updated.

This is a preliminary plant trail guide to the South Kaibab Trail to mile 2.7, resulting from just two days of field work on 23-24 August 2008. It is therefore undoubtedly incomplete, especially for annuals and perennials, missing a number of such species that are seen only in wetter years or earlier in the year. However, it should be fairly complete for the larger shrubs and trees on the trail.

A plant trail guide gives the location of the first occurrence of every taxon (species and subspecies) found on the trail, as well as an estimate of the abundance of each taxon. It enables a botanist to know exactly where to find a given species, and gives the identification for species seen as one hikes along a trail. It is much more useful in the field than a traditional plant list by family, since the plants are seen in the trail in the order of the plant trail guide, and one doesn't have to figure out the determination from a large plant list by family.

In this plant trail guide, the common name of many species is linked to a separate webpage that shows photographs taken on 23-24 August 2008. For most taxa, these photographs serve as vouchers for my determinations, allowing botanists to confirm or question my determinations. ☺

The photographs also enable armchair botanists to take a virtual tour through all the species seen those days on the trail.

Since most species were not in bloom then, the photographs in general don't look anything like the pretty pictures of flowers shown in most field guides. However, this more nearly reflects what the plants look like most of the year, and hence may actually be more beneficial for most botanists trying to identify the species on the trail.

Since I am a botanist, the photographs were taken with identification of the species in mind. Almost every species has at least one picture with an object in it that can be used as a scale to make good measurements of the lengths of the parts needed for identification. Objects used for scale are: my fingers (widths ~ 18 mm = 0.7 inches) or my thumb (width ~23 mm = 0.9 inches; thumbnail width ~16 mm = 0.6 inches); my GPS receiver (11.0 cm long x 5.2 cm wide = 4.3 x 2.0 inches); or my backpack (15 inches tall x 16.5 inches wide x ~10 inches deep = 38 x 42 x 25 cm).

As far as possible, I used my knowledge of what characteristics are usually used to distinguish each species, and targeted those with my photographs. The discriminating characteristics vary tremendously between genera and families, and can range from the branching habit at the base of the plant, the characteristics of the underneath or shape or hairs of the leaf, to properties of the twigs. Sometimes, botanists even use the characteristics of the flowers, even though it often doesn't seem like it when photographers send pictures to botanists to be identified! ☺

Of course, some species do not have their identifying characteristics on display in September, so not all species will have those characteristics photographed.

Important Caveats:

Many of the determinations were based on a reasonable guess as to the correct species, or by my keying of the plants among species unfamiliar to me, or by my assuming that, if the Grand Canyon flora only lists one possible determination, then that determination is the correct one. I note that the latter approach would have resulted in an erroneous determination for Polygonum arenastrum if I had not been able to explicitly key out that species, and interested in doing so.

A key is a horrible way to identify species outside the hands of someone very familiar with a given flora. For example, only through the use of a key could an elephant be keyed as a "mouse", since keys often depend on subtle features in order to reliably discriminate species. But a key is the best means we have for discriminating species, and they work well if one is familiar with most of the species in the key. An expert in the plants of Arizona would be far less likely to make a bonehead mistake in keying out plants than an Arizona novice like me.

The reader may be amused to know that most botanists do not identify plants in the field when they are working on the flora of an area except possibly for the most common or unique species. Instead, they collect specimens, which are then pressed and dried. The specimens are then taken to a herbarium that has similar samples of all the possible identifications that have been determined by experts in those taxa. The specimens are directly compared, with the aid of a key and a microscope, to the labeled herbarium specimens to get the determination. (By the way, botanical keys are almost always made from, and for, pressed and dried specimens, which is definitely a problem at times in keying live plants.)

I collected no specimens; all my determinations have been made from my photographs and field observations. (Note that taking anything from Grand Canyon National Park is prohibited unless you have a permit to do so in your possession.) Hence the likelihood of a misdetermination is much higher than determinations made from specimens.

I would greatly appreciate it if anyone who spots a mistake, or even questions a determination, would contact me so mistakes can be corrected. Additions to the guide are welcome as well, especially if documented by photographs and good locations.

My determinations would not have been possible without the excellent resources available that I consulted. Many people have worked on the Grand Canyon Flora, collecting specimens, curating the specimens in herbaria, reviewing the determinations of those specimens, making the information from specimens available online, taking photographs and identifying the plants in those photographs, writing books, and synthesizing the available information in keys and floras. I am deeply grateful to all those people. I especially thank Lori Makarick, who provided the latest Grand Canyon Park Plant Checklist. That list was helpful in quickly getting the proper determination for several species.

A reference page gives the taxa found on this trail in traditional family order. For each taxon, that page links to online references and gives detailed references to printed reference material.

A list of just the species with species pages is given here: Bright Angel Trail and South Kaibab Trail: Checklist of Species With Pictures.

Highlights of This Trail

Fieldwork Dates and Summary of List Changes With Time

The following table gives the dates the trail was walked and taxa recorded. After each visit, the table gives the total number of taxa on the list and the breakdown of the taxa without positive identification. See Explanation of Plant Trail Guides to understand the symbols below.

Visit DateVisit ## taxa# "?"# "sp"# "~"# "ssp"

The Plant Guide

Key to Plant Guide Information

Mile: It is like a car odometer. Mile 0.00 includes all mileages from 0.000 to 0.009; 0.01 includes all mileages from 0.010 to 0.019, etc. 0.01 mile is 18 yards = 53 feet, about 18-20 normal-size paces.

Note that species separated by a difference of 0.01 mile in the guide could actually be fairly close together, with the odometer "rolling over" between them. Example: one species is at 1.599 miles, reported as 1.59 miles in the guide, and the next species is at 1.601 miles, reported as 1.60 miles in the guide. The species are actually just 0.002 miles = 10 feet apart. They could also be almost 0.02 miles apart. Example: one species is at 1.601 miles and the next is at 1.619 miles.

The mileage for this guide is nowhere near as accurate as the mileage for the Bright Angel Trail. I primarily relied on GPS points recorded in the field for every location, and for the elevations. Note that GPS readings often have considerable error in canyons, due to poor satellite visibility and errors due to satellite signals taking multiple paths to the receiver due to reflections from the many exposed rock faces here.

In fact, GPS receivers are almost useless in some parts of the trail due to these problems. Be very wary about believing the trip mileage given by a GPS receiver.

Since most people walk without a pedometer or a GPS to give them their rough mileage, enough landmarks are included in the guide that it is not necessary to pay much attention to the mileage. It is mainly useful in telling the reader when there are long intervals without new species, or when new species come fast and furious.

S: Side of trail on which the first occurrence is found: left, right, both, or center

#: On-trail species are numbered in order of first occurrence on trail (easily touchable from the trail). Off-trail species are in parentheses.

id?: Species without an entry in this column are quite confidently identified. "?" means I am just guessing the identification; "sp" means the genera is probably known, but the species name is uncertain even when a potential species name is given in the guide; "~" means I have roughly 95% confidence that this is the determination, but have not yet positively identified it; "ssp" means the subspecies or variety needs to be determined.

FAM: The family for each taxon is given as the first three letters of the full scientific family name, with all letters capitalized. See the key to the three letter abbreviations.

(*)Common Name: An asterisk before the common name indicates a species that is non-native to the Grand Canyon, and hence should not be here. The Common Name is linked to a separate page for each species giving photographs and further information about some species. The Common Name in many cases has been taken from my southern California database for expediency. If you know of a better common name used at the Grand Canyon, please let me know.

Note that common names are not standardized, and more than one taxa can have the same common name.

Scientific Name: This is the name used to uniquely identify a species by botanists, which enables one to confidently look up more information about each species. All names are as given in the latest Grand Canyon flora online. Synonyms (older, newer, or alternate Scientific Names) are given in the page linked to the common name, usually via the USDA Plants link.

#Plants: This gives the minimum number of on-trail plants of this species on this trail, with the number of locations on this trail following the /, using maximum values of 99/9. A value of 1/1 means I only found a single plant in a single location in the entire trail; 10/9 means 10 plants occurring in at least 9 locations, etc. Very common taxa are generally given as 50/9 or 99/9, with the 99/9 species being significantly more abundant than the 50/9 species.

Introduction To The Linked Species Pages

Many species in the plant trail guide have additional information given on a separate page that is linked from the Common Name field below. The additional information includes:

Characteristics: This section begins with Identification status, which gives a discussion of how confident I am in the determination. The identification and other characteristics of each species are discussed. The explicit keying is given in some cases.

Some species have additional discussion about the species in the Grand Canyon and/or elsewhere.

Voucher information is given, including the number of vouchers in the entire Grand Canyon and the closest voucher to the Bright Angel Trail. Voucher information was obtained from the Southwest Biodiversity Consortium (formerly SEINet).

The information given in the guide below about the location and number of plants is repeated on each species page.

Unfortunately, due to the amount of time it took me to make a full species page, some species have just the pictures and reference information on the species pages, without the additional information mentioned above.

Pictures: Pictures of each species taken on the Bright Angel Trail are presented, often with the identification characteristics explicitly pointed out.

References: References are given to 13 sources, including links to online references and page numbers for printed references.

Version for printing, without lines and other text on this page: html (6 pages) or pdf Clickbook booklet (2 double-sided pages). (See printing instructions for an explanation of these options)

MileS#id?FAM(*)Common NameScientific Name#Plants
0.00   South Kaibab Trailhead; elevation 7200 feet (2195 m). Begin guide at display boards: left: "A Hike to Cedar Ridge"; right: "South Kaibab Trail". VIS, juniper mistletoe, Phoradendron juniperinum, just before trailhead; look for it on trail
0.00b1 PINtwo-needle pinyon pinePinus edulis50 / 9
0.00b2 VISpinyon pine dwarf-mistletoeArceuthobium divaricatum25 / 9
0.00l3 ROSUtah service-berryAmelanchier utahensis50 / 9
0.00l4 CHEFremont's goosefootChenopodium fremontii50 / 9
0.00r5 CHE*Russian thistleSalsola tragus5 / 2
0.00r  (BRA Wright's thelypody, Thelypodium wrightii)
0.00b6 ASTsilver wormwoodArtemisia ludoviciana99 / 9
0.00r7 POA*downy bromeBromus tectorum99 / 9
0.00r8 BRA*crossflowerChorispora tenella99 / 9
0.00r9 ASThoary-asterMachaeranthera canescens50 / 9
0.00r10 POA*foxtail barleyHordeum murinum99 / 9
0.00r11 BRA*herb sophiaDescurainia sophia99 / 9
0.00r12 POAIndian ricegrassAchnatherum hymenoides40 / 9
0.00l13 BRAperennial rock-cressArabis perennans50 / 9
0.00l14 POAmutton grassPoa fendleriana99 / 9
0.00l  (HYD Utah fendlerbush, Fendlerella utahensis)
0.00l  (CUP, Utah juniper, Juniperus osteosperma; VIS, juniper mistletoe, Phoradendron juniperinum; AST, Basin butterweed, Packera multilobata; CAP, snowberry, Symphoricarpos oreophilus; AST Rock Goldenrod, Petradoria pumila)
0.00l15 RAN*curveseed butterwortCeratocephala testiculata99 / 9
0.00l16 ASTbig sagebrushArtemisia tridentata99 / 9
0.00l17 SCRtoadflax penstemonPenstemon linarioides20 / 9
0.00l  (whisky currant, Ribes cereum var. pedicellare)
0.00   Switchback right
0.01l18 CHE*tumbling oracleAtriplex rosea2 / 2
0.01r19 GROwhisky currantRibes cereum var. pedicellare20 / 7
0.01r20 POAsquirreltailElymus elymoides20 / 9
0.02r21 ASTGrand Canyon GoldenweedEricameria arizonica30 / 7
0.02r22 CAPsnowberrySymphoricarpos oreophilus30 / 9
0.02r23 EPHgreen ephedraEphedra viridis50 / 9
0.02r24 ASTGrand Canyon rock-daisyPerityle congesta50 / 9
0.02l25~CACMojave prickly-pear (not seen in 2009)Opuntia erinacea3 / 3
0.02l26 ASTBasin butterweedPackera multilobata20 / 9
0.02l  (beardtongue, Penstemon barbatus)
0.02l27 CUPUtah juniperJuniperus osteosperma20 / 9
0.03r28 RUBWright's bedstrawGalium wrightii40 / 9
0.03r29 ROScliffrosePurshia stansburiana40 / 9
0.03l30 SCRbeardtonguePenstemon barbatus10 / 4
0.03l31 BRAWright's thelypodyThelypodium wrightii30 / 9
0.03r32 POLsouthern mountain phloxPhlox austromontana30 / 9
0.04r33 ASTCooper’s rubberweedHymenoxys cooperi10 / 9
0.04l34 ASTCalifornia brickellbushBrickellia californica30 / 7
0.04l35 SCRPalmer's penstemonPenstemon palmeri30 / 9
0.04l36 LAM*horehoundMarrubium vulgare3 / 3
0.04l37~ASTsticky snakeweedGutierrezia microcephala99 / 9
0.04   Switchback left and curve right at sign "When mules pass"
0.04l38 POA*smooth bromeBromus inermis99 / 9
0.04l39 POLSimpson's buckwheatEriogonum microthecum var. simpsonii50 / 9
0.04r  (PIN, Rocky Mountain Douglas-fir, Pseudotsuga menziesii var. glauca)
0.05l40 SCRbeaked penstemonPenstemon rostriflorus10 / 7
0.05l41 CAREastwood's sandwortArenaria eastwoodiae5 / 2
0.06r42 ROSfern bushChamaebatiaria millefolium1 / 1
0.06   Switchback left at ridge
0.06l43 ASTbeautiful aster Eurybia pulchra40 / 9
0.06l44 FABfreckled milk-vetchAstragalus lentiginosus var. diphysus50 / 9
0.06r  (Gambel oak, Quercus gambelii)
0.06l  (Fendler's meadow-rue, Thalictrum fendleri)
0.07l45 POAslender wheatgrassElymus trachycaulus20 / 3
0.07l46 PINRocky Mountain Douglas-firPseudotsuga menziesii var. glauca5 / 5
0.07b47 BRAmountain pepper-grassLepidium montanum30 / 7
0.08r  Check if this off-trail Arabis is A. perennans – no pix yet
0.09   Switchback right at sign "No dogs"
0.11   Switchback left
0.12r  In distance, leaning block of Coconino Sandstone
0.12r48 FAGGambel oakQuercus gambelii5 / 2
0.13   Switchback right at sign "No shortcutting"
0.15   Switchback left
0.15   Switchback right and curve left
0.16r49 GROtrumpet gooseberryRibes leptanthum2 / 2
0.16   Switchback left
0.16r  First live Basin butterweed, Packera multilobata, in 2009.
0.16r ?(young plant with erect trifoliate leaves; a baby Ptelea trifoliata?)
0.17l  (Arizona thistle, Cirsium arizonicum var. nidulum)
0.17   Switchback right
0.20r50 RANFendler's meadow-rueThalictrum fendleri1 / 1
0.20r51~SCRthickleaf beardtonguePenstemon pachyphyllus var. congestus10 / 9
0.20r52spNYCsmooth spreading four o'clock or trailing four-o'clockMirabilis oxybaphoides or Mirabilis pumila1 / 1
0.20r  (dentnut cryptantha, Cryptantha abata)
0.20r53 ASTArizona thistleCirsium arizonicum var. nidulum10 / 5
0.20r54 HYDFendler bushFendlera rupicola10 / 5
0.23l  Sign: "Warning!"; elevation ~7000 feet (2130 m)
0.23r55 ASTmatchweedGutierrezia sarothrae5 / 3
0.26r  (banana yucca, Yucca baccata)
0.26l56?POA one-sided grass1 / 1
0.26r  (Torrey's milkvetch, Astragalus calycosus)
0.26b57 BORdentnut cryptanthaCryptantha abata15 / 4
0.26l58 AGAbanana yuccaYucca baccata2 / 2
0.27l59 FABTorrey's milkvetchAstragalus calycosus50 / 9
0.27b  (Field of AST, Rock Goldenrod, Petradoria pumila)
0.28r  (hairy goldenaster, Heterotheca villosa)
0.37r60 ASThairy goldenasterHeterotheca villosa40 / 9
0.38l61 AGAKaibab century plantAgave utahensis var. kaibabensis10 / 9
    (first off-trail CAC, Mojave prickly-pear, Opuntia erinacea, in 2009)
0.39r62~BORslender cryptanthaCryptantha gracilis40 / 5
0.40r63spASTleafy asterErigeron sp.5 / 2
0.40r64 ASTRock GoldenrodPetradoria pumila20 / 9
0.40l65 ASTthreadleaf common rabbitbrushEricameria nauseosa var. oreophila50 / 9
    Need to get mileages for the following, and place the trail curves right correctly:
 r  (LIN, Lewis' flax, Linum lewisii)
 b66 POA*red bromeBromus rubens /
 r  (Parish needlegrass, Achnatherum parishii)
 r  (spiny greasebush, Glossopetalon spinescens var. aridum)
    Trail curves right at small ridge; elevation ~6800 feet (2070 m)
 r  (prickly pear with fat pads, Opuntia sp.)
 b67 SCRpurple bird's-beakCordylanthus parviflorus20 / 5
 l68spCACprickly pear with narrow padsOpuntia sp.1 / 1
 r69 ASTgreenstem paperflowerPsilostrophe sparsiflora50 / 9
    (SCR, Martin's paintbrush, Castilleja applegatei ssp. martinii)
  70 LINLewis' flaxLinum lewisii var. lewisii /
0.57l71 ROSApache plumeFallugia paradoxa10 / 3
0.58r72 GER*redstem filareeErodium cicutarium99 / 9
0.60r73?  unk similar to Ageratina, but different /
0.61l  Check for Artemisia nova
    Check order of species from mile 0.68 to mile 0.81
0.68r74 ASTlongleaf brickellbushBrickellia longifolia40 / 9
0.68r75 ASTfragrant snakerootAgeratina herbacea5 / 1
0.70r76 RHAbirchleaf buckthornFrangula betulifolia ssp. obovata1 / 1
0.73r77 CROspiny greasebushGlossopetalon spinescens var. aridum50 / 9
0.73r78 BRA*shepherd's purseCapsella bursa-pastoris /
0.73l  (ROS, true mountain-mahogany, Cercocarpus montanus)
0.75   Switchback left at Ooh-Aah Point
0.78b79spCACprickly pear with fat padsOpuntia sp.2 / 1
0.81   Switchback right; elevation ~6600 feet (2010 m)
0.81l  (AST, Missouri goldenrod, Solidago missouriensis)
0.83l  (GAR, ashy silk tassel, Garrya flavescens)
0.85r80 LAMDrummond's false pennyroyalHedeoma drummondii1 / 1
0.87r81 MAL*common mallowMalva neglecta1 / 1
0.90l  (CAC Engelmann's hedgehog cactus, Echinocereus engelmannii)
0.91   Trail turns right 90°
0.91r82 SELspike-mossSelaginella mutica10 / 1
0.91r83 ROStrue mountain-mahoganyCercocarpus montanus50 / 9
0.93   Switchback left
0.96   Switchback left
0.97   Switchback right; elevation ~6400 feet (1950 m)
1.02   Switchback right
1.06l84 RUTpallid hoptreePtelea trifoliata ssp. pallida var. pallida5 / 5
1.07   Switchback left; lowest Grand Canyon Goldenweed, Ericameria arizonica
1.10l85 RUBMunz's bedstrawGalium munzii ssp. ambivalens30 / 9
1.14b86 APIrockloving wavewingPteryxia petraea5 / 1
1.14r sp(a different Arabis like A. pulchra?)
1.16   Long switchback left
1.19   Switchback right; elevation ~6200 feet (1890 m)
  87? ?unk shrub with opp lvs and dense infl30 / 5
1.24r88~EUPsmall-seeded spurgeChamaesyce polycarpa10 / 2
1.25r sp(unk grass similar to Bouteloua)
1.28r89 POAParish needlegrassAchnatherum parishii40 / 9
1.28l90 LAMblue sageSalvia dorrii10 / 5
1.28   Sign: "Cedar Ridge"; elevation 6067 feet (1849 m)
1.30   Trail turns right 90° off ridge
1.31   Switchback left
1.34r91 BETKnowlton hop hornbeamOstrya knowltonii1 / 1
1.36l92 BRAheartleaf jewelflowerStreptanthus cordatus30 / 9
1.36b93 BRAprince's plumeStanleya pinnata40 / 9
1.36b  Check for different Artemisia like tridentata
1.37l  (BER Fremont barberry, Mahonia fremontii)
1.41l94?AST?unk Asteraceae shrub like Brickellia /
1.42   Switchback right
1.43   Switchback left; elevation ~5900 feet (1800 m)
1.45l95 OLEsingle-leaf ashFraxinus anomala3 / 3
1.49l96 NYCgiant four o'clockMirabilis multiflora20 / 7
1.50l97~POLeyed giliaGilia ophthalmoides5 / 1
1.50l98 CHEfourwing saltbushAtriplex canescens30 / 7
1.56r99spPOA?unk grass similar to Bouteloua eriopoda /
1.57   Brief flat part of trail with great views; elevation ~5800 feet (1770 m)
1.61r100 ASTrush rabbitbrushEricameria nauseosa var. juncea4 / 4
1.62l  (BOR, capitate cryptantha, Cryptantha capitata)
1.63   Saddle; trail leaves ridge to right
1.63r101 ANAskunkbushRhus trilobata /
1.63r ?(BRA, *African mustard, Malcolmia africana; unk per with opp lvs)
1.64r102? ?unk per with opp lvs /
1.69r103 BRA*African mustardMalcolmia africana20 / 7
1.70   Switchback right
1.73   Switchback left; elevation ~5670 feet (1730 m)
1.73r  (wire-lettuce, Stephanomeria pauciflora)
1.75r  (AST, Bigelow sagebrush, Artemisia bigelovii)
1.82l104 POAside-oats gramaBouteloua curtipendula3 / 1
1.84b105 LOAAdonis blazing starMentzelia multiflora40 / 9
1.84l106 HYDnarrow phaceliaPhacelia filiformis5 / 1
1.84l ?(AST, fiveneedle pricklyleaf, Thymophylla pentachaeta; AST, tall plant with clasping leaves and purple-tipped phyllaries; dwarf false pennyroyal, Hedeoma nana ssp. nana)
1.85r107 ASTwire-lettuceStephanomeria pauciflora2 / 1
1.85r108 POAblack gramaBouteloua eriopoda5 / 2
1.88l  (banana yucca, Yucca baccata, with a trunk)
1.92l  A glaucous mutton grass, Poa fendleriana
1.93   Elevation ~5500 feet (1675 m)
1.95l109 SCRMartin's paintbrushCastilleja applegatei ssp. martinii5 / 1
1.96   Trail curves left at ridge
1.97l110 NYCdwarf sand verbenaAbronia nana5 / 3
2.03l111 ROSlittle-leaved mountain-mahoganyCercocarpus intricatus3 / 2
2.03l112 ASTBigelow sagebrushArtemisia bigelovii /
2.05l113?AST?unk per like Gnaphalium canescens ssp. beneolens1 / 1
2.15r114spBRAbeautiful rock-cress?Arabis pulchra?3 / 1
2.16l115 BRArose bladderpodLesquerella purpurea5 / 2
2.21l116spSCRpaintbrush with non-wavy leavesCastilleja sp.1 / 1
2.23r117 MALgooseberryleaf globemallowSphaeralcea grossulariifolia30 / 9
2.23   Elevation ~5300 feet (1615 m)
2.28l  Trail is on top of breccia pipe, formed by roof collapse of a limestone cave, best exposed on saddle to left
2.29r118?AST?shrub similar to Viguieria or Encelia1 / 1
2.29r119 BRAcommon pepper-grassLepidium densiflorum10 / 1
2.29r ?(a perennial Eriogonum not E. inflatum?)
2.30r120 POLdesert trumpetEriogonum inflatum20 / 5
2.31r121 ROSblack brushColeogyne ramosissima50 / 9
2.36l122 POAhairy erioneuronErioneuron pilosum2 / 1
2.43l123 ASTrose heathChaetopappa ericoides /
2.45l124? unk rosette with long-petioled leaves like EriogonumEriogonum sp.?5 / 3
2.48l ~(winding mariposa, Calochortus flexuosus; ~larkspur, ~Delphinium sp.)
2.50r125 POAfluff grassDasyochloa pulchella1 / 1
2.50r126 BRAhairy-podded pepper-grassLepidium lasiocarpum var. lasiocarpum5 / 1
2.50l  (CAC California barrel cactus, Ferocactus cylindraceus)
2.51r  (AST woolly bur-sage, Ambrosia eriocentra)
2.51r127 AGAsoaptree yuccaYucca elata1 / 1
2.56r128 LILwinding mariposaCalochortus flexuosus /
2.56r129 POAJames' galletaPleuraphis jamesii20 / 5
2.72   Skeleton Point; elevation ~5100 feet (1555 m); End Plant Trail Guide
    (many-headed barrel cactus, Echinocactus polycephalus var. xeranthemoides off-trail at top of drop-off to west)

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Copyright © 2009-2012 by Tom Chester, Anne Kelly, Arnie Peterson, Ash Bedford and Brendan Crill.
Permission is freely granted to reproduce any or all of this page as long as credit is given to us at this source:
Comments and feedback: Tom Chester
Updated 4 July 2012.