Anza-Borrego: Plant Guide To Borrego Palm Canyon Nature Trail

mile	s	#	id	Common Name	Latin Name	#here	#all
0.00				Begin trail near northwest end of parking lot; elevation ~835 feet (250 m).
0.00	l			(Desert pupfish pond, California fan palm, Washingtonia filifera; American tule, Scirpus americanus)
0.00	r			(honey mesquite, Prosopis glandulosa var. torreyana)
0.00	l	1		desert lavender	Hyptis emoryi	99 / 9	47
0.00	b	2		California suncup	Camissonia californica	99 / 9	63
0.00	b	3		*Mediterranean schismus	Schismus barbatus	99 / 9	52
0.00	l	4		desert dandelion	Malacothrix glabrata	50 / 7	18
0.00	l	5		California filago	Filago californica	99 / 9	33
0.00	l	6		*redstem filaree	Erodium cicutarium	99 / 9	84
0.00	l	7		pale sun-cup	Camissonia pallida ssp. pallida	50 / 9	11
0.00	l			(wire-lettuce, Stephanomeria pauciflora var. pauciflora)
0.00	l	8		brittlebush	Encelia farinosa	99 / 9	55
0.00	b	9		cheesebush	Hymenoclea salsola var. salsola	99 / 9	47
0.00	b	10		common phacelia	Phacelia distans+	99 / 9	39
0.00	l	11		alkali western tansy-mustard	Descurainia pinnata ssp. halictorum	99 / 9	8
0.00	b	12		*London rocket	Sisymbrium irio	99 / 9	24
0.00	r	13		desert thornapple	Datura discolor+	30 / 9	9
0.00	l	14		creosote bush	Larrea tridentata	99 / 9	56
0.00	l			(Gander's cholla, Opuntia ganderi)
0.00	l			Drinking fountain, shaded display board, trail brochures.
0.00	r			Women's flush toilet
0.00	r	15		*red brome	Bromus madritensis ssp. rubens	50 / 9	86
0.00	r	16		threadstem	Pterostegia drymarioides	20 / 9	47
0.00	r	17		*Asian mustard	Brassica tournefortii	99 / 9	47
0.00	r	18		hairy-podded pepper-grass	Lepidium lasiocarpum var. lasiocarpum	99 / 9	32
0.00	r	19		desert chicory	Rafinesquia neomexicana	50 / 9	26
0.00	l			Sign: "Palm Canyon Trail. [No dogs.]"
0.00	r	20		Fremont pincushion	Chaenactis fremontii	99 / 9	13
0.00	r	21		popcorn flower	Cryptantha intermedia	99 / 9	38
0.00	r	22		Emory's rock-daisy	Perityle emoryi	99 / 9	30
0.00	r			Jct. old trail to men's flush toilet
0.00	r	23		pygmy-weed	Crassula connata+	40 / 2	37
0.01	r	24		indigo bush	Psorothamnus schottii	10 / 9	48
0.01	r	25		strigose lotus	Lotus strigosus	50 / 9	53
0.01	r	26		wishbone plant	Mirabilis bigelovii var. retrorsa	30 / 9	30
0.01	r	27		sand cress	Calyptridium monandrum	5 / 2	20
0.01	r	28	~	Texas filaree	Erodium texanum	5 / 1	7
0.01	r	29		purple-root cryptantha	Cryptantha micrantha	10 / 1	20
0.01	r			Sign: "Warning: Trail is hot-dry. Carry 1 gallon of water minimum per person." (sign is meant for summer heat!)
0.01	r	30		brown-eyed primrose	Camissonia claviformis ssp. peirsonii	30 / 4	26
0.01	r	31		bearded cryptantha	Cryptantha barbigera	99 / 9	22
0.01	b	32		fivewing spiderling	Boerhavia intermedia	99 / 9	10
0.02	l	33		six-weeks three-awn	Aristida adscensionis	30 / 5	16
0.02	l	34		curvenut combseed	Pectocarya recurvata	99 / 9	11
0.02	l	35		whispering bells	Emmenanthe penduliflora var. penduliflora	99 / 9	24
0.02	l	36		wire-lettuce	Stephanomeria pauciflora var. pauciflora	10 / 4	53
0.02	l	37		frost mat	Achyronychia cooperi	2 / 2	8
0.02	l			Sign: "Palm Grove 1.5 mi"
0.02	r			(narrowleaf ditaxis, Ditaxis lanceolata; burroweed, Ambrosia dumosa)
0.02	r	38		big galleta	Pleuraphis rigida	50 / 9	47
0.02	l			Sign: "No dogs, no bicycles".
0.02	l	39		San Diego birdsfoot lotus	Lotus hamatus	99 / 9	26
0.02	r	40		small-flowered poppy	Eschscholzia minutiflora ssp. minutiflora	40 / 9	16
0.02	r	41		narrowleaf ditaxis	Ditaxis lanceolata	99 / 9	33
0.03	r	42		Gander's cholla	Opuntia ganderi	20 / 9	41
0.03	r	43		Yuma spurge	Chamaesyce setiloba	20 / 2	5
0.03	l	44		rock hibiscus	Hibiscus denudatus	50 / 9	27
0.03	l	45		burroweed	Ambrosia dumosa	50 / 9	52
0.03	r	46		California barrel cactus	Ferocactus cylindraceus+	2 / 2	44
0.03	l			(Pima rhatany, Krameria erecta)
0.03	l	47		dwarf filago	Filago depressa	20 / 2	2
0.03	l	48	~	*sow thistle	Sonchus oleraceus+	2 / 2	49
0.04	l			Sign: "Mountain Lions / Rattlesnakes ..."
0.04	l	49		beavertail cactus	Opuntia basilaris var. basilaris	10 / 9	49
0.04	l			Signpost "1" at beavertail cactus: "Don't touch! It has dozens of tiny spines that are painful to the touch and difficult to remove".
0.05	l	50		needle grama	Bouteloua aristidoides var. aristidoides	30 / 9	7
0.05	l	51		desert trumpet	Eriogonum inflatum+	20 / 9	40
0.06	l	52		California mustard	Guillenia lasiophylla	10 / 1	9
0.06	r	53		small-seeded spurge	Chamaesyce polycarpa	50 / 9	55
0.06	r	54		chinch-weed	Pectis papposa var. papposa+	20 / 5	5
0.06	r	55		trailing four o'clock	Allionia incarnata	50 / 9	11
0.06	r	56		Pima rhatany	Krameria erecta+	20 / 9	16
0.07	r	57		chuparosa	Justicia californica	99 / 9	26
0.07	l			Signpost "2" at ocotilla: "After a rainfall, leaves burst out within 24 hours. They'll be full grown in only five days! After a month of dry weather, the leaves fall to the ground."
0.07	l	58		ocotillo	Fouquieria splendens ssp. splendens	10 / 4	52
0.07	l	59		brittle spineflower	Chorizanthe brevicornu var. brevicornu	10 / 3	32
0.09	l	60		thick-leaved ground cherry	Physalis crassifolia	10 / 9	22
0.09	l	61		Mojave ragwort	Senecio mohavensis	99 / 9	19
0.09	r	62		Sonoran spurge	Chamaesyce micromera	3 / 1	5
0.09	r	63		wild canterbury bells	Phacelia minor+	99 / 9	25
0.09	l			(pellitory, Parietaria hespera var. hespera+)
0.09	l	64		star gilia	Gilia stellata+	30 / 9	12
0.09	r	65		silver puffs	Uropappus lindleyi	5 / 5	38
0.09	l			Signpost "3" in 2005: "You are [about to descend into] a desert wash, a great place to look for animal tracks and scat."
0.09	r	66		Mormon tea	Ephedra aspera	10 / 9	8
				Check for Ephedra californica later on trail
0.09	r	67		common fiddleneck	Amsinckia menziesii var. intermedia	99 / 9	24
0.09				Descend to cross drainage from a side canyon
0.10	r	68		narrow-leaved miner's lettuce	Claytonia parviflora ssp. parviflora	5 / 2	25
0.10	r	69		*sourclover	Melilotus indicus	30 / 5	27
0.10	b	70		meally white pincushion	Chaenactis artemisiifolia	20 / 9	15
0.10	b			See list at end of guide of taxa that have been seen off-trail in the wash after monsoonal floods in the previous summer / fall
0.10				Cross main channel of side wash; elevation 840 feet (255 m).
0.10	b	71		sacred datura	Datura wrightii+	10 / 3	30
0.10	l	72		sweetbush	Bebbia juncea var. aspera	20 / 9	56
0.11				The area here has been greatly changed by the 10 September 2004 flash flood. Formerly, this side canyon wash had two braids, with high ground in-between. The two braids have merged, eliminating that high ground along with the old signpost "3" and some of the species.
0.11	l			(foxtail barley, Hordeum murinum)
0.11				Former top of high ground between braids; the next two species were gone post 9/04 flood.
0.11	l	73		California fagonia	Fagonia laevis+	20 / 9	25
0.12	l			Signpost "3" (pre 9/04). Cross former second braid of wash.
0.13				Ascend out of wash
0.13	l	74		Anderson's desert-thorn	Lycium andersonii	6 / 2	12
0.13	r			(catclaw, Acacia greggii; prickly poppy, Argemone munita)
0.14				Trail is now shifted left from the pre 9/04 trail, but is still next to the changed main drainage with seasonal water. The sweetbush used to be on the left of the trail; it is now on the right. Note the palm trunks washed down in September 2004.
0.14	r			(desert-willow, Chilopsis linearis ssp. arcuata)
0.15	r	75		desert bluebells	Phacelia campanularia ssp. campanularia (=P. nashiana)+	30 / 4	7
0.16	r	76		*nettle-leaved goosefoot	Chenopodium murale	20 / 5	11
0.16	r			Signpost "4" (gone post 9/04): "Hear any birds? These desert willows create a home for birds like the California quail and the Costa's hummingbird."
0.17	r	77		apricot mallow	Sphaeralcea ambigua var. ambigua	10 / 9	22
		78		Bigelow's monkeyflower	Mimulus bigelovii var. bigelovii	20 / 4	12
0.19	l			(chia, Salvia columbariae)
0.19	l	79		*tumble pigweed	Amaranthus albus+	1 / 1	17
0.19	l	80		prickly poppy	Argemone munita	3 / 3	11
0.19	l	81		southern California silver-lotus	Lotus argophyllus var. argophyllus	1 / 1	10
0.19	l	82		hairy six-weeks fescue	Vulpia octoflora var. hirtella	10 / 2	2
0.20	r			Signpost "5" in 2005: "Follow your nose to the desert lavender bush here. Rub the leaves. The leaves change size and texture depending on soil moisture."
0.20	r	83		baby California fan palm	Washingtonia filifera+	20 / 3	14
0.22	r	84		short-winged deerweed	Lotus scoparius var. brevialatus	3 / 3	38
0.23	r	85		fringe-pod	Thysanocarpus curvipes	10 / 2	16
0.25				(catclaw, Acacia greggii, with desert mistletoe, Phoradendron californicum growing on it at eye-level)
0.26	l	86		*California burclover	Medicago polymorpha	10 / 2	44
0.26	l	87		red maids	Calandrinia ciliata	1 / 1	25
0.27				The trail and area are greatly changed between mile 0.27 and mile 0.34. The following section of the guide is from the old trail. Presumably, many of these species will return eventually. See below for the guide to the new trail.
0.27				Guide to old trail, which no longer exists
0.27				Trail turns right 90° to cross flowing water.
0.29	r			Signpost "5" (pre 9/04)
0.30	r	88		volcanic gilia	Gilia ochroleuca ssp. exilis	5 / 2	4
0.30	r	89		desert tobacco	Nicotiana obtusifolia	2 / 2	22
0.30	r	90		common monkeyflower	Mimulus guttatus	5 / 1	24
0.30	r	91		southern gilia	Gilia australis	10 / 3	3
0.30	r	92		*celery	Apium graveolens	1 / 1	6
0.30	r	93		*water speedwell	Veronica anagallis-aquatica	5 / 2	5
0.30	r	94		*common cudweed	Gnaphalium luteo-album	2 / 2	22
0.30	r			(lace-fringed spineflower, Chorizanthe fimbriata var. laciniata some distance down wash.)
0.30	l		~	(scarlet monkeyflower, Mimulus cardinalis some distance up wash)
0.30				Cross flowing water in season, stepping on rocks; elevation 885 feet (270 m). Trail then curves left 90°. Watch for bighorn sheep beginning here.
0.30	r	95		*white goosefoot	Chenopodium album	1 / 1	11
0.30	r	96		*rabbits-foot grass	Polypogon monspeliensis	3 / 1	39
0.27				Guide to the new trail between mile 0.27 and mile 0.34, and lists only species not found on the old trail, or found at an earlier location than previously.
0.28	r	97		Newberry's velvet mallow	Horsfordia newberryi	2 / 2	16
0.28	l	98		green miner's lettuce	Claytonia parviflora ssp. viridis	10 / 3	6
0.30	r	99		Payson's wild cabbage	Caulanthus simulans	1 / 1	4
0.30	r	100		chia	Salvia columbariae	30 / 5	54
0.30	r	101		Palmer's milk-vetch	Astragalus palmeri	1 / 1	2
0.31	l		sp	(ann Eriogonum, Eriogonum davidsonii?)11
0.32	l	102		catclaw	Acacia greggii	10 / 3	50
0.32				Trail turns right 90° to cross flowing water.
0.32	l	103		*hairy rattail fescue	Vulpia myuros var. hirsuta	5 / 1	21
0.34	l			(fountain grass, Pennisetum setaceum; Vasey's sage, Salvia vaseyi)
0.35				Cross channel created in 2004, with seasonal flowing water
0.35				End greatly-changed area; area post-2004 flood is now mostly the same as it was before.
0.35	l	104		snapdragon campion	Silene antirrhina	20 / 3	9
0.35	l	105		Coulter's lupine	Lupinus sparsiflorus	99 / 9	13
0.35	l	106		San Felipe dogweed	Adenophyllum porophylloides	5 / 5	30
0.35	l	107		white fiesta flower	Pholistoma membranaceum	99 / 9	17
0.35	r			Signpost "6" (gone post 9/04): "Home to Ancient People. Morteros and metates are on boulders near here."
0.35	r	108		muilla	Muilla maritima	10 / 5	16
0.37	r	109		desert plantain	Plantago ovata	99 / 9	35
0.39	l	110		Parish's poppy	Eschscholzia parishii	40 / 9	16
0.41	r			Signpost "7" (gone post 8/03): "Note the desert varnish on these rocks."
0.41	r			(California trixis, Trixis californica var. californica; in distance: desert agave, Agave deserti)
0.42	l	111		desert spike-moss	Selaginella eremophila	50 / 9	17
0.42				Trail is just now in shade from the mountains to the west at 2:50 pm PST on 11/4.
0.43	l	112		arrow-leaf	Pleurocoronis pluriseta	1 / 1	25
0.43	l	113		California trixis	Trixis californica var. californica	3 / 3	31
0.44				Trail turns left 90°
0.44	b	114		Vasey's sage	Salvia vaseyi	10 / 3	23
0.45				Trail turns right 90°
0.46	l			Signpost "8" (gone post 9/04): "Rolling rocks. Flash floods carried these boulders here. Their nooks and crannies harbor wildlife, including pack rats and snakes". Hikers on the "Alternate Trail" can be seen just beyond the far bank of the wash.
0.47	r	115		cattle saltbush	Atriplex polycarpa+	5 / 1	16
0.47	r	116		*fountain grass	Pennisetum setaceum	5 / 5	23
0.47	l	117		desert-willow	Chilopsis linearis ssp. arcuata	10 / 2	17
0.47	r	118		*Oriental mustard	Sisymbrium orientale	20 / 2	22
0.48	l	119		honey mesquite	Prosopis glandulosa var. torreyana	30 / 3	24
0.53	r			Signpost "9": "You're probably being watched by desert bighorn sheep."
0.54	l			Trail turns right 90°
0.56				Trail curves left 90°
0.57	l			Signpost "10" in 2005: "On 'holey' ground. Tarantulas, scorpions, lizards, mice and harvest ants make many of the holes in the ground."
0.57	l			(Parish's viguiera, Viguiera parishii)
0.58				Trail post 9/04 now goes straight up the drainage. Formerly, the trail curved left and crossed the drainage; elevation ~980 feet (300 m).
0.58				This section of the guide is for the old trail, which is still almost completely intact post the 9/04 flood
0.60	r	120		Coulter's snapdragon	Antirrhinum coulterianum	5 / 1	10
0.61	r	121		Wallace's woolly daisy	Eriophyllum wallacei	1 / 1	7
0.61	r	122		prickly cryptantha	Cryptantha muricata	10 / 2	21
0.61	r	123		winged cryptantha	Cryptantha holoptera	1 / 1	2
0.61	l	124		lace-fringed spineflower	Chorizanthe fimbriata var. laciniata	1 / 1	2
0.61	r			(desert nest straw, Stylocline micropoides; woolly lipfern, Cheilanthes parryi; San Felipe dogweed, Adenophyllum porophylloides)
0.62	l	125	~	iris-leaved rush	Juncus xiphioides+	1 / 1	6
0.65				Trail turns right 90° a young smoothleaf yerba santa, Eriodictyon trichocalyx var. lanatum, is found just ahead if you don't turn right
0.65	r	126		Wright's buckwheat	Eriogonum wrightii var. nodosum+	5 / 2	22
0.65	l	127		boundary goldenbush	Ericameria brachylepis+	1 / 1	13
0.66	l	128	~	slender-lobed four o'clock	Mirabilis tenuiloba	5 / 5	6
0.66	r	129		woolly lipfern	Cheilanthes parryi	20 / 5	30
0.66	r			(slender wild oats, Avena barbata)
0.67	l			The pre-2005 signpost "10", still present
0.68	l			(California fan palm, Washingtonia filifera)
0.69				The left side of the trail is mostly gone post the 9/04 flood, so this spot is a bit tricky.
0.69	l	130		desert brickellia	Brickellia desertorum+	1 / 1	13
0.69	l			Trail jags left around boulder, but stays on this side of drainage; 3' waterfall to left
0.75				The trickiest spot post 9/04 flood. Formerly, the trail crossed a dry drainage, then curved right. That dry drainage has become the main channel. You need to cross it, then cross back in in 0.03 miles.
0.76	r	131	sp	blazing star	Mentzelia sp.	/
0.78	l	132		globe gilia	Gilia capitata ssp. abrotanifolia	1 / 1	12
0.79	r	133		ayenia	Ayenia compacta	2 / 2	11
0.80	r	134		Durango root	Datisca glomerata	1 / 1	14
0.80	l			desert brickellia	Brickellia desertorum	2 / 2
0.80				Cross back over stream, and rejoin old trail.
0.81	l			(prickly sow thistle, Sonchus asper ssp. asper)
0.81	l			(Check for Borrego milk-vetch, Astragalus lentiginosus var. borreganus)
0.81	l			(deergrass, Muhlenbergia rigens)
0.82	l			(mule fat, Baccharis salicifolia)
0.58				This section of the guide is for the post 9/04 trail, as marked on 1/05. This section has not been botanized much.
0.80				Junction where the new trail used to leave the wash to left. In 2010 the new trail continues straight ahead in the wash.
0.82				Jct. of old trail with the bypass route used in 2005
0.83				Trail jogs right; don't continue straight.
0.84	r			(Engelmann's hedgehog cactus, Echinocereus engelmannii)
0.84	r	135		pebble pincushion	Chaenactis carphoclinia var. carphoclinia+	10 / 3	13
0.85	l	136		caterpillar phacelia	Phacelia cicutaria var. hispida	50 / 9	26
0.85	l			Signpost "11": First glimpse of the Borrego Palm Canyon Oasis, a half mile ahead."
0.87	l			Sign (gone post 9/04): "The Palm Oasis: a rare desert treasure." Trail jags right.
0.87	r			(ironwood, Olneya tesota)
0.91	l	137		bajada lupine	Lupinus concinnus	1 / 1	38
0.92				This was formerly a fairly flat area. The August 2003 flash flood took out the flat area to the right of the trail. The 9/04 flash flood took out the remaining shrubs there.
0.96				Jct. with new trail in 2010
0.96	l	138		Hooker's evening-primrose	Oenothera elata ssp. hirsutissima	1 / 1	16
0.96				Go left to cross the creek just upstream of the site of the former wooden bridge.
0.96	l	139		floriferous monkeyflower	Mimulus floribundus	1 / 1	12
0.96	r	140	sp	*tamarisk	Tamarix sp.	1 / 1	5
0.96		141	?	baby plant like scarlet monkeyflower, Mimulus cardinalis
0.96				Cross the creek.
0.96	l	142		western marsh cudweed	Gnaphalium palustre	1 / 1	7
0.96	r	143		Hall's caulanthus	Caulanthus hallii	3 / 1	5
0.97	l			Jct. "Alternate Trail" (heading back to campground); Sign: "Palm Oasis (right); Alternate Trail (left); elevation ~1100 feet (335 m). Turn right
0.97	r			Begin large patches of white fiesta flower, Pholistoma membranaceum
0.97				Enter shade at 2:52 p.m. on 3/27
0.97	l			*sow thistle	Sonchus oleraceus+	/
0.98	r	144		*prickly sow thistle	Sonchus asper ssp. asper	1 / 1	34
0.98	l			(jojoba, Simmondsia chinensis)
0.98	l	145		pellitory	Parietaria hespera var. hespera+	99 / 9	12
1.00	l			(star-flowered bedstraw, Galium stellatum var. eremicum; desert tobacco, Nicotiana obtusifolia)
1.00	l	146		miner's lettuce	Claytonia perfoliata ssp. perfoliata	1 / 1	26
1.00	l			Signpost "12" (washed out in 2004; replaced slightly downtrail in 2005): "Spine-tinglers: catclaw on left of trail, honey mesquite on right".
1.00	l			(fish-hook cactus, Mammillaria dioica, 15 feet above the trail)
1.02	l	147		California brome	Bromus carinatus var. carinatus	10 / 3	51
1.05	b	148		Parish's viguiera	Viguiera parishii	20 / 6	30
1.05	l	149		desert mistletoe	Phoradendron californicum+	2 / 2	41
1.06	l			(rock crossosoma, Crossosoma bigelovii)
1.07	r			(yellow-flowered branch of chuparosa, Justicia californica)
1.09	r	150		climbing milkweed	Sarcostemma cynanchoides ssp. hartwegii	3 / 3	13
1.15	l			Signpost "13" (gone post 9/04): "Water gauge, which measures stream depth"; elevation ~1040 feet (315 m). Beginning of palm grove pre 9/04. Note the partially hidden waterfall upstream.
1.15				Short double switchback, left then right.
1.16	r			Best view of the hidden waterfall.
1.19	r	151		scarlet spiderling	Boerhavia coccinea	2 / 2	3
1.19	l			desert tobacco	Nicotiana obtusifolia	/
1.20	r			Signpost "14" (gone post 9/04): "Native Shade" from the California fan palm.
1.20	r			(red willow, Salix laevigata)
1.20	r			First mature California fan palm pre 9/04.	Washingtonia filifera	/
1.23	l	152	sp	rush with round stem	Juncus sp.	/
1.24				Cross the creek; elevation ~1160 feet (350 m). In December 2003, this was all choked with sand. In February 2004, the stream had cut a channel into the sand. In November 2005 it was all rocky; the sand was gone. In February 2007, it was filled with plants, mostly water cress.
1.24	l	153	~	water cress	Rorippa nasturtium-aquaticum	10 / 1	17
1.24	r	154		*green bentgrass	Agrostis viridis	10 / 1	5
1.24	r	155		*Bermuda grass	Cynodon dactylon	5 / 1	43
1.25				Immediately after crossing the water, the trail turns left 90°
1.26			?	Trail turns right 90° The following species, along with a small hidden pond and hidden grotto perhaps with a seasonal waterfall, are found in the moist area just across the stream to the left: unk sedge, Carex or Cyperus sp.; wrinkled rush, Juncus rugulosus; iris-leaved rush, Juncus xiphioides; rush like Juncus effusus; California loosestrife, Lythrum californicum; scarlet monkeyflower, Mimulus cardinalis; plant with leaves similar to cinquefoil, Potentilla; western sycamore, Platanus racemosa; narrowleaf willow, Salix exigua; rigid hedge-nettle, Stachys ajugoides var. rigida; southern cattail, Typha domingensis
1.26	b			(arrow-weed, Pluchea sericea)
1.27				Trail turns left 90°
1.28	l			boundary goldenbush	Ericameria brachylepis	/
1.28	l			Signpost "15" (gone post 9/04; tape incorrectly says "14 location"): "Almost there...the oasis is just a few minutes ahead".
1.30	l			(A roughly 5 foot waterfall. You can see a dense grove of palms ahead. California juniper, Juniperus californica, high on cliffs)
1.31	b			Wright's buckwheat	Eriogonum wrightii var. nodosum	1 / 1
1.32	l	156		arrow-weed	Pluchea sericea	5 / 2	13
1.32	l			(Fremont cottonwood, Populus fremontii ssp. fremontii)
1.33	l			(sugar bush, Rhus ovata)
1.37				A sometimes-confusing junction if the signs are gone; elevation ~1180 feet (360 m). The trail goes right, a bit uphill, not straight along the canyon bottom. Look for a post uphill to your right with an arrow pointing left. The trail going into the Palm Grove is now marked "not a through trail", and most of the Grove is blocked by barriers with signs asking you to stay out and allow the baby palms to grow up.
1.38	r			Upper Trail Guide: Trail turns left 90° at the post.
1.44	l			Sign: "At home in a palm oasis". After enjoying the palm grove here, turn around and go back to the jct with the Alternate Trail.
1.38				Lower Trail Guide: Cross the creek. The following species are found in the creek area below the Palm Grove. No "side" is given since the side depends where you cross.
1.38		157		Ferriss' horsetail	Equisetum Xferrissii	30 / 1	13
1.39		158		western ragweed	Ambrosia psilostachya	30 / 2	46
1.39		159		goldenrod	Solidago californica	10 / 1	77
1.39		160		mule fat	Baccharis salicifolia	10 / 1	48
1.39		161		narrowleaf willow	Salix exigua	5 / 1	17
1.39		162		southern cattail	Typha domingensis	20 / 1	12
1.39		163	~	mountain California-fuchsia	Epilobium canum ssp. latifolium	30 / 1	67
1.42		164		Fremont cottonwood	Populus fremontii ssp. fremontii	1 / 1	20
1.42			~	*water speedwell	Veronica anagallis-aquatica	/
1.42		165		red willow	Salix laevigata	1 / 1	33
				Lower Trail Guide: Cross the creek. The following species are found in the creek area below the Palm Grove and wander into the Palm Grove, heading uphill through it. Note: this route is now closed to allow the Grove to regenerate; please respect that closure. The species found there, listed below, are common species.
1.42				Return the way you came.
1.86				Jct. Alternate Trail. Do not be worried by the trail having some uphill sections and sometimes appearing to head away from the parking lot.
1.88	l			(desert lotus, Lotus rigidus)
1.89				Switchback right.
1.90				Switchback left.
1.92	r			Check for Guadalupe cryptantha, Cryptantha maritima
1.95	r	166		beetle spurge	Euphorbia eriantha	20 / 5	9
1.95	r			Begin section of trail containing mostly caterpillar phacelia, Phacelia cicutaria var. hispida
1.95	r			California fagonia	Fagonia laevis	/
1.96				Switchback right.
1.97				Trail turns left 90°
1.99	r	167		heliotrope phacelia	Phacelia crenulata var. ambigua	1 / 1	19
2.00	l	168		California cloak fern	Notholaena californica+	3 / 3	8
2.00				First local high point on trail; elevation ~1160 feet (355 m); switchback left and descend.
2.04				Cross very small drainage
2.06				Cross small drainage and begin ascending again.
2.09				ayenia	Ayenia compacta	/
2.10				Second local high point on trail.
2.14				Third local high point on trail.
2.16				Fourth local high point on trail
2.16	r	169		California buckwheat	Eriogonum fasciculatum var. polifolium	3 / 3	54
2.17	r	170		rattlesnake weed	Daucus pusillus	10 / 2	31
2.17	r	171		Coulter's lyrepod	Lyrocarpa coulteri var. palmeri	3 / 3	9
2.18	r	172		desert twining snapdragon	Antirrhinum filipes	1 / 1	6
2.18	r	173		short-bannered coastal lotus	Lotus salsuginosus var. brevivexillus	10 / 2	9
2.18	r	174		Cedros milk-vetch	Astragalus nuttallianus var. cedrosensis	10 / 1	1
2.19				Switchback right.
2.20				Trail curves left 90°
2.21		175		Arizona spurge	Chamaesyce arizonica	30 / 3	2
2.21				Fifth local high point on trail.
2.23				Sixth high point on trail. The trail is now almost flat, with a number of minor local high points
2.27	r	176		Guadalupe cryptantha	Cryptantha maritima	/	16
2.36	r			Check for limestone phacelia, Phacelia cryptantha
2.38				Cross minor drainage
2.40	r	177		intermediate larkspur	Delphinium parishii ssp. subglobosum	4 / 2	13
2.40	r			Liverworts
2.44	r			A "rock bench" that you can sit on; it even has a back!
2.44	r	178		eucrypta	Eucrypta chrysanthemifolia var. bipinnatifida	20 / 2	6
2.45				Cross minor drainage
2.48	r			Check for different lupine
2.48				Cross minor drainage and ascend.
2.51				Final local high point. Now the trail stops fooling around and heads downhill toward the parking lot.
2.60	r			Check for fish-hook cactus, Mammillaria dioica
2.63	r	179		*African daisy	Dimorphotheca sinuata	1 / 1	4
2.68				Trail turns right 90°, now in wash; elevation ~940 feet (285 m).
2.68	r	180		Bigelow's blue grass	Poa bigelovii	1 / 1	1
2.68	r	181		*slender wild oats	Avena barbata	1 / 1	49
2.70				Trail turns left 90° out of the wash.
				Check for crossosoma in rock cliffs of Alternate Wash
2.72				Long curve right 180°
2.76				Trail turns left 90° into wash.
2.77				Trail turns right 40° out of wash.
3.00	l			View of ampitheatre for ranger programs.
3.03	r			Sign: "Trail is hot-dry, etc.", readable only by hikers going the opposite way.
3.04				Jct paved road; turn right on it.
3.05				Enter middle of parking area for the Trail, go left to get back to the trailhead.
3.05	r			("Trailhead store")
3.10	l			Desert pupfish pond.
3.10	l	182		American tule	Scirpus americanus	30 / 1	8
3.11				End guide back at the trailhead; elevation ~835 feet (250 m).
				Species found in winters, especially in washes after summer / fall monsoonal floods, that were seen in 2004 and 2005, sorted by scientific name, and numbered if they don't appear above either on or off-trail
				Summer / fall annuals:
		183		fringed amaranth	Amaranthus fimbriatus	/
				desert thornapple	Datura discolor	/
				Higher-elevation spring annuals brought down by floods:
				Coulter's snapdragon	Antirrhinum coulterianum	/
		184		strigose sun-cup	Camissonia strigulosa	/
				Hall's caulanthus	Caulanthus hallii	/
		185		San Diego jewelflower	Caulanthus heterophyllus var. heterophyllus	/
		186		*mouse-ear chickweed	Cerastium glomeratum	/
				green miner's lettuce	Claytonia parviflora ssp. viridis	/
		187		southern Chinese houses	Collinsia concolor	/
		188		horseweed	Conyza canadensis	/
				Wallace's woolly daisy	Eriophyllum wallacei	/
		189		common bedstraw	Galium aparine	/
				southern gilia	Gilia australis	/
				volcanic gilia	Gilia ochroleuca ssp. exilis	/
		190		cotton-batting plant	Gnaphalium stramineum	/
				*foxtail barley	Hordeum murinum	/
		191		*prickly lettuce	Lactuca serriola	/
		192		spreading loeflingia	Loeflingia squarrosa var. squarrosa	/
				southern California silver-lotus	Lotus argophyllus var. argophyllus	/
		193		*white sweetclover	Melilotus albus	/
				scarlet monkeyflower	Mimulus cardinalis	/
				floriferous monkeyflower	Mimulus floribundus	/
		194		limestone phacelia	Phacelia affinis	/
		195		short-lobed phacelia	Phacelia brachyloba	/
				desert bluebells	Phacelia campanularia ssp. campanularia (=P. nashiana)+	/
				caterpillar phacelia	Phacelia cicutaria var. hispida	/
				*rabbits-foot grass	Polypogon monspeliensis	/
		196		tomcat clover	Trifolium willdenovii	/
		197		*brome fescue	Vulpia bromoides	/
				hairy six-weeks fescue	Vulpia octoflora var. hirtella	/
				Other species seen in 2004 and 2005:
				Palmer's milk-vetch	Astragalus palmeri	/
		198		devil's spineflower	Chorizanthe rigida	/
		199		desert dicoria	Dicoria canescens	/
		200		Arizona lupine	Lupinus arizonicus	/
		201		purple mat	Nama demissum var. demissum	/	7
		202		nemacladus	Nemacladus sp.	/

http://tchester.org/sd/plants/guides/anza_borrego/borrego_palm_canyon.html
Last update: 8 February 2010 (Equisetum species updated 23 March 2023).