NOETH AMERICAN EUFHORBIACE^. 85 



ventral facets concave, and the involueral lobes entire or 2 — 3 

 cleft. {E. Neo-Mexicana^ Greene, Bull. Calif. Acad. Sci., vol. 



11. p. 00. 



So far only known from Xew Mexico, where the type was 

 found by Prof. Greene, on the plains of the upper Gila Eiver 

 in 1S80 ; in an unknown location in that territory by Dr. Geo. 

 Vasey (450), 1881 ; also in New Mexico location unknown to 

 iiie, by Dr. Palmer, 1869, communicated to me over the label 

 ''E, glDptospermaj EngeJmy 



Var. EUGULOSA, Engelm. (ined,) Differs principally in its 

 thickly matted growth ; the prolongation of the teeth down 

 the longer side of the leaf ; and the turgid very finely rugu- 

 lose seeds. The type from San Bernardino, Calif., S. B. & 

 W» P. Parish, 1881 ; specimens also from S-nn Bernardino 

 Galley, Calif., S. B. Parish, 1887 ; and lower Sacramento 

 Valley, near Suisun, E. L. Greene, 1889, 



The species most likely to be confounded with serpijUifoUa 

 in some of its forms are : i\xQ pseudoserpijJli folia and Greenei 

 of the succeeding pages of this article. These neatly Join the 

 species to E, glypiosperniay EngeJm., which however is always 

 easily distinguished by its seeds having several deep and 

 I'ogular transverse ridtres that include the andes. 



