April, 1916. Euphorbiace^e — Millspaugh 403 



aristate; sulcus V-shaped, the fundus occupied by 2-3-aristate lobes; 

 glands minute, stipitate, cupulate; appendages roseate, distant from the 

 glands and but Httle larger, inserted about half way down the stipe; male 

 flowers about 6, short, absent in many involucres of each cluster; 

 filaments glabrous; female flower short pedicelled; ovary densely pubes- 

 cent ; styles roseate, bifurcate two-thirds their length, the branches di- 

 varicate and somewhat capitulate at the stigmatic tips. Capsule 

 strongly tricoccous, bearing very short, thick, crispid, golden, multicel- 

 lular hairs; seeds pink-ashen, ovate-quandrangular, acute, .8 x .5mm., 

 angles sharp, facets marked by irregular, complete and incomplete 

 transverse ridges. 



Near Ch. hirta (L.) Millsp. 



Mexico, along an arroyo in the vicinity of Alamos, State of Sonora, 

 Rose, Standley 6° Russell, March 13, 1910, 12728 (Type in herb. New 

 York Botanical Garden). 



Chamaesyce vallis-mortae sp. nov. 



Perennial from a long, cylindrical root; densely woolly-pubescent 

 above. Stems many, \dry, divergently branching toward the tips. 

 Inflorescence solitary in the leaf axils of the branchlets. Leaves thick, 

 ovate, cordate, roimded at the apex, entire, 5 x 4 — 6 x 5mm., densely 

 woolly on both surfaces; petioles about imm. long; stipules short, 

 triangular, cihate. Involucres campanulate; peduncle about one-third 

 the length of the tube; outer surface woolly, inner surface fasciculate- 

 hairy; lobes triangular; sulcus deeply V-shaped, the fundus unoccupied; 

 glands green, longitudinal, scutelliform; appendages large, white, 

 flabelliform, the outer margin papulo-ciliate and often slighty 3-crenate; 

 male flowers about 6, glabrous; female flower pedicellate; ovary woolly- 

 pubescent; styles bifid two-thirds their length, the branches divergent 

 not swollen at the stigmatic tips. Capsule obpyriform, hairy; seeds 

 salmon-color, quadrangular-ovate, pointed, the angles rounded, facets 

 smooth or nearly so. 



Near Ch. tonsita Millsp. 



California, Death Valley between Mohave and Keeler, alt. 750 

 meters, June 21, 1891, Coville b' Funston 1008 (Type in U. S. National 

 Herbarium cat. no. 16203). 



Chamaesyce tamaulipasana sp. nov. 



Annual, prostrate, pilose. Stems many from the thickened rootstalk ; 

 branches unilateral on the stems, densely foHate; branchlets very short. 

 Inflorescence solitary in the axils of the branchlet leaves. Leaves ap- 

 pressed, inaequilateral, ovate, acute, cordate, entire, 3.5x2- 5x3 



