228 CALIFORNIA ACADEMY OF SCIENCES. 



leafy terminal glomerules; involucre inflated campanulate 

 short pedunculate, lobes sharply triangular. Glands 

 transversely oblong, slightly concave, of a deep maroon 

 color almost black; appendages transversely elliptical, entire, 

 white, sometimes wanting in involucres of the same head. 

 Styles bipartite to the middle, stigmas somewhat clavate. 

 Capsules densely tomentose obpyriform, the carpels strongly 

 keeled, seeds elongated-tetragonal, cinnamon brown; when 

 mature, strongly marked by 6 parallel (4 central complete, 

 2 terminal incomplete) transverse ridges which include the 

 angles. 



Stems 1-2 dm. long, leaves 3-5 mm. long, 1-3 mm. broad; 

 capsules 3 mm. long, seeds 2 mm. long, 1 mm. broad. Near 

 E. leucophylla. — Comondu, April. 



Euphorbia geminiloba, sp. nov. Annual (?) ascending, 

 slightly hairy; stems terete fragile, internodes long (1-4 

 cm); branches divergent (15 cm. long, and shorter); leaves 

 elliptical (IJ cm. long, 8 mm. and less, wide), very oblique- 

 ly truncate at the base, acute, the margin sharply and 

 coarsely toothed, especially upon the longest side, all green 

 above and pallid beneath; stipules lanceolate, ciliate. In- 

 florescence in terminal leafy-bracted capitate clusters; in- 

 volucres sessile or nearly so, subcylindrical, hairy; lobes 

 lanceolate, ciliate, mostly geminate; glands small, orbicu- 

 lar, nearly plane, long stipitate; appendages about twice 

 the size of the glands, white, orbicular, concave, mostly 



entire; stigmas elongated, bifurcated. Fruit 



Pozo de Los Dolores, April 5th, not yet in fruit. 



( ^ Alectoroctonum.) 



Euphorbia Xanti Engelm. (inlitt.); a form with broadly 

 obovate, petiolate stem leaves narrowing and slightly un- 

 equal at the base; 2 cm. long, Ih cm. broad. — Purisima, 

 February 12th. and Comondu. 



