434 EUPHORBIACEZ OF THE MEXICAN BOUNDARY. 
EvupHorpia Fenpuert, Torr. & Gray, Bot. Pope's Rep. p.19. EF. rupicola, Scheele in Linnzea, 22, p. 153, non 
Boiss. Common in New Mexico and Western Texas; Lindheimer, Wright, Bigelow. Sonora; Thurber. Variable in 
the form of the leaves and the shape or presence of the appendages. 
EUPHORBIA ALBOMARGINATA, Torr. § Gray, l. c. p. 18. Common in the whole region between beh Texas 
and the Great Colorado, and southward into Mexico. It is No. 330 of Drummond’s second Texan Collectio 
EUPHORBIA CINERASCENS, 7. sp.: erecto-patula s. subdecumbens, pubescenti-canescens ; foliis e basi tiie obli- 
qua ovatis s. suborbiculatis obtusis supra glabratis ; stipulis lanceolatis minutis mox deciduis; glomerulis lateralibus ; 
involucris canis; glandulis (plerumque purpureis) angustissimis marginatis ; stylis brevibus pilosis; capsula acute 
angulata cana; nonpneg ovatis acute angulatis leviusculis. On the Rio Grande; Wright. Chihuahua and Sonora ; 
’s Hill, near Monterey, Hexion: Gregg. 
a APPENDICULATA : foliis utrumque cinereis ; appendicibus majoribus truncatis cemoneet mh agen longi- 
oribus. San Felipe, California; Dr. Le Conte, ana and San Gabriel ; Bigelow. 4-6 i 
rounded leaves, often tawny red, 13-2 lines long; flowers few. Mr. Thurber informs us i this plant i is cl [187] 
Yerba de la Golondrina in Sonora. The Mexicans ca it to be a certain cure for the bite of a rattlesnake a 
other poisonous animals. The bruised fresh plant or the dried, steeped in wine, is applied to the wound. ‘ ana 
of the plant is sometimes kept in the apothecaries’ shops of that country. According to Dr. Gregg, the name Golon- 
drina is applied to all the prostrate Zuphorbie. 
EUPHORBIA INZQUILATERA, Sonder in Linnea, 23, p. 105. I cannot distinguish from this plant of the Cape of 
Good i a species of the plains of Nebraska, Kansas, and Texas, and which extends into New Mexico, California, 
and Ore There it has been collected since the explorations of Nicollet and Fremont by almost every traveller 
(e. g., Fendler, 791, 795, 803; Wright, 666, 1823, in part, 1846). The same plant has been sent from Florida by 
Blodgett and Chapman, is found on the West India Islands, is undoubtedly the #. Nilagirica, Miq., of India, and has 
also been observed in New Holland; but it seems unknown in other States east of the Mississippi. 
EUPHORBIA GLYPTOSPERMA, 7. sp.: erecto-patula seu demum decumbens ; foliis e basi valde obliqua (latere 
inferiore producta) equilatis oblongis s. oblongo-linearibus obtusis versus apicem subserratis s. integriusculis ; stipulis 
setaceis laciniatis, anthodiis alaribus demum in glomerulos laxos laterales confertis ; appendiculis ie) ibus integris seu 
crenatis; stylis brevibus apice bilobis, stigmatibus subglobosis ; seminibus ovatis argute rugosis ad angulos acutos cre- 
natis. 2. ie mahcsigyy Hook. Fl. Bor.-Am. fide spec. sinelacee non Linn. 
: foliis parvulis angustis apice vix crenulatis ; involucri minuti glandulis vix seu non appendicula- 
tis. On ee Bo ea. also on the Arkansas, and extending to the Upper Missouri. (No. 1853, 1855, and 1856, 
Wright.) From a few inches to a foot high. The larger horklonit forms have leaves 3 to 6 lines long and 1 to 2 lines 
wide. B. the leaves are 1 to 3 lines long and } to 1 line wide; involucrum in the latter only 0.3 line long. Seed 
very sharply cross-ribbed, similar to that of H. prostrata, and notched at the angles. 
EUPHORBIA STICTOSPORA, 7. sp.: erecto-patula, foliis e basi obliqua subcordata orbiculatis seu ovatis argute 
serratis supra subnudis ; siuiales subulatis ciliatis ; glomerulis lateralibus sessilibus ; Jee angustis appendiculatis ; 
stylis ovario pubero habla patulis indivisis ; stigmatibus 3 capitatis ; ae puberula ; seminibus angustis acute 
angulatis exsculpto-pun From Kansas (Fendler, 798), to Santa Fé (Fendler, Bes 7) and 4d Dofia Ana (Wright, 59), 
New Mexico, and ata Chibuahua ; Thurber. Ste em 3-6 inches high. Leaves 2-4 lines long; apparently near 
E. prostrata, but styles and seeds very different. 
EvpHorstA ProstRatA, Ait. This variable and often mistaken species is found from Western Louisiana (Dr. 
Hale) to Texas ; (Lindheimer, 533); (Berlandier, 1100, 2530); (Wright, 1848 in part, 1 1855 in part). It seems to be 
a common since in the West [ndia Islands, Mexico, and South America. It occurs in Africa and India. Euphorbia 
tenella, HBK., and £. callibrichoides, HBK., are forms of the same species, which can always be recognized by the cili- 
ate angles of the capsule and the sharply rugose seeds, notched at the angles. 
Evrnorsia Dioica, HBK. (£. anceps, Benth. F. callibrichoides, Schauer, etc.), a common and very variable 
plant of Mexico, Central America, and the West India Islands ; has been collected by Dr. Antisell on the upper Rio 
Grande. 
Var.? distinguished by the annual root, the less coriaceous, less oblique and less distichous leaves, the 
more scattered involucra, ond the undivided styles ; ae ing found near the Copper Mines, New Mexico, by Mr. 
Wright (No. 1845), and in Sonora by Mr. Thurber (No. 9 
EUPHORBIA SERRULA, n. sp.: patula seu decumbens; caule patenter piloso; foliis e basi valde obli- [188] 
quo obtusiuscula seu subcordata oblongis sxpe falcatis obtusis argute grosseque serratis, subtus pilosis; stip- 
ulis lanceolatis laciniatis; glomerulis lateralibus appendicibus angustis integris seu crenulatis ; stylis ovario glabro 
brevioribus patulis ad basim fere bifidis; seminibus ovatis levibus costato-angulatis. Western Texas and New Mexico 
(No. 658, 1843 and 1844, Wright. No. 796 and 804, Fendler). Stems 4-6 inches long. Leaves 3-5 lines long, 1-3 
