283 



borne in sessile or peduncled, turbinate 

 or campanulate inv, subtended by bracts 

 which are often brightly colored. Sin- 

 uses of inv usually bearing glands, 

 naked or appendaged: staminate fls scat- 

 tered over the inner surface of inv, 

 consisting of a sta, jointed on a fil-like 

 pedicel which is subtended by a minute 

 bractlet, supposed to represent a ex: 

 pistillate fls solitary, consisting of a 

 3-celled ova usually exserted on a stalk; 

 sty 3, 2-cleft: cap often nodding, 3-lobed, 

 separating into 3 2 valved carpels: sds 

 sometimes caruncled, variously pitted, 

 ridged or wrinkled. 

 EUPHORBIA ALBOMARGINATA T.-G. 



Glabrous; sts num from a woody per 

 base, prostrate or decumbent, 5-20 cm 

 long; Ivs nearly orbicular, 4-8 mm 

 broad, often retuse above and somewhat 

 cordate at base, with a thin whitish 

 edge: stipules united into a conspicuous 

 membranous w triangular scale, entire 

 or somewhat lacerate; inv mostly soli- 

 tary, campanulate or turbinate, about 

 1.5 mm long; glands maroon color with 

 a conspicuous entire w or rose-p dilated 

 appendage; cap about 2 mm long, lobes 

 angled on back; sds oblong. 4-angled. 



T & G, Pac Ry R 2 pt, 174 (1855). 



Type locality: "head- waters of the 

 Colorado." 



Coville, CNH, 4:194. Argus mts, etc. 



Abrams, Fl LA 235. 



Davidson, PI LA Co 16. 



Yuma, Arizona (Parish 697). 

 EUPHORBIA MELANDENIA Torrey. 



Abrams, Fl LA 235. Gabriel mts. 



Cinereous with a dense soft pubes,- 

 cence, much branched from the base, the 

 brancjies ascending forming tufts; rt 

 simple, somewhat lignescent, but appar- 

 ently an; Ivs mostly ovate, short-peti- 

 oled, usually oblique at base, one side 

 being somewhat cordate; stipules min- 

 ute, ciliate, distinct; inv solitary; gland 

 p, its appendages with a w or rose-col- 

 ored margin; cap densely hirsute. 



Euphorbia polycarpa vestita Watson. 

 EUPHORBIA NUTANS Lag. 



Ann, glabrous or sparingly pubescent; 

 sts branched, ascending or erect, 2-6 

 dm long, branches often recurved at 

 ends: Ivs opp; oblong-ovate to linear- 

 oblong, oblique, 3-nerved, unequally ser- 

 rate, short-petioled; stipules triangular, 

 slightly lacerate; inv narrowly obovoid, 

 1 mm long; glands subtended by sm 

 rounded reddish appendages; cap gla- 

 brous; sds oblong-ovoid, 1.5 mm long, 

 4-angled, transversely rugose. 



Abrams, Fl LA 236. Santa Ana 

 (Helen D Geis). 

 EUPHORBIA OCCIDENTALS Drew . 



"An, diffuse, decumbent or prostrate; 

 branches 4-8' long, glabrous, pale g or 

 glaucescent; Ivs obovate-oblong, inequi- 

 lateral at base, 2-4" long, conspicuously 

 serrulate above the middle and across 

 the obtuse or truncate apex; stipules 

 whitish, lacerate, y 2 " long; inv sm, axil- 

 lary, the glands with w or p'ish mar- 

 gins, crenulate or minutely lobed: sds 

 %" long, ask-gray or almost w, the 

 faces irreg but not deeply wrinkled. In 

 sandy soil, Hy-Am-Pum valley, Jl 23." 

 Drew, Torr cl b 16:152. Humboldt Co 

 Cal. , 



EUPHORBIA POLYCARPA Benth. 



Glabrous or somewhat finely pubes- 

 cent; sts num from a per woody base, 

 prostrate or decumbent, 5-30 cm long; 

 Ivs round-ovate, obtuse, usually slightly 

 cordate, 2-6 mm long; stipules minute, 

 short-triangular to lanceolate, ciliate, 

 distinct; inv mostly solitary, about 1 

 mm long; glands mostly dark p, the w 

 or rose-p somewhat crenate margins 

 often very narrow; cap sm with angled 

 lobes; sds oblong, 4-angled, about 1 mm 

 long. 



Bentham, Bot Sulph 50 (1844). 

 Type locality: "Bay of Magdalena," 

 Baja. 



Coville, CNH 4:194. 



Abrams, Fl LA 235. Santa Ana mts. 1 

 Variety MICROMERA Milsp. 



CD (Cargo Muchacho, Or 2072; Dos 

 Cabesas, Or 2198). 

 EUPHORBIA ERIANTHA Benth. 



CD (Parish); Magdalena Island. 

 EUPHORBIA HIRTULA Engelm. 



Southern and Baja California. 

 EUPHORBIA LEPTOCERA Engelm. 



Davidson, Erythea 2:30. Catalina. 

 EUPHORBIA MISERA Benth. 



A low rigid shrub, often densely cov- 

 ered with lichens; abundant on Point 

 Lcma. SD; Baja. 

 EUPHORBIA PEPLUS Linn. 



Parish, Erythea 3:61. "Occasionally in, 

 gardens at SBer." 

 EUPHORBIA SETILOBA Engelm. 



Santa Ana. Cal. (Orcutt). 

 EUPHORBIA BAJA-CALIFORNICA 



Milsp. 



Sand dunts near Quiutin (Or 13''l ; dis- 

 tributed as E. microxnera) 

 FUPI-TORBIA LONGICRURIS Scheele, 



Euphorbia,, peploiues Nuttal*. 



Santa Ana. Cnl (Orr-ntt' 

 EUPHORBIA CALirORNICA Eeiath. 



Hager.l'U'-vc. KryilKM 1 .;9. "The Mexi- 

 cans call this Golondrino, and consider 

 it a cure for the bite of the rattlesnake. 



The n'ame Golondrina is derived from 

 the resemblance of the plant to a swal- 

 low's nest fide Dr. Manuel Urbina. 

 EUPHORBIA PARISHII Greene. 



Mohave (Parish 1384). 

 EUPHORBIA WRIGHTII T. & G. 



Santa Ana Cal. (Orcutt). 

 EUPHORBIA DENTATA MX. 



Verde Co., Arizona (Orcutt). 

 EUPHORBIA DICHTYOSPERMA F.&M. 



Sianta Ana, Cal. (Orcutt). 



CALLITRICHACEAE. 



Herbaceous aquatic or rarely terres- 

 trial plants, with slender or capillary 

 sts, opp exstipulate entire Ivs, and min- 

 ute perfect monoecious axy fls: perianth 

 0: bracts 2, sac-like or 0: sta 1; fil elon- 

 gated, filiform; anth cordate, 2-celled, 

 opening by lateral slits: pistil 1; ova 4- 

 celled; ovules 1 in. each cell; sty 2, fili- 

 form: fr compressed, lobed, lobes more 

 or less winged or keeled on the mar- 

 gins, separating at maturity into 4 flat- 

 tish 1-seeded carpels: sd anatropous, 

 pendulous; endosperm fleshy: embryo- 

 straight or slightly curved. Water star- 

 wort family. 



Genus CAULITRICHE Linnaeus. 



