476 PROCEEDINGS OF THE AMERICAN ACADEMY 



laciniately pinnatifid with few attenuated lobes : involucre 8 lines long, 

 rather many-flowered, the narrowly lanceolate acuminate bracts im- 

 bricated in about 2 series, the outer mostly somewhat smaller : 

 achenes (immature) narrow, glabrous : pappus in 2 series, the outer of 

 several (5 to 10) hyaline linear-lanceolate denticulate palese (| line 

 long), the inner of 5 scabrous awns (3 lines long). — Santa Cruz 

 Island, California {H. C. Ford, April, 1887). The habit and in- 

 volucre wholly that of Microseris ; the pappus more like that of 

 Krigia. 



Amarantus (Amblogtne) Pringlei. Erect, slender, a foot high 

 or more, glabrous or very nearly so : leaves linear-oblanceolate, petio- 

 late, mostly 1 or 2 inches long : inflorescence leafy, monoecious ; bracts 

 lanceolate, spinulose-acuminate, equalling the fruiting calyx (a line 

 long or less) ; staminate flowers few, mingled with the pistillate ones, 

 small, with narrow acute sepals ; sepals of the pistillate flowers dis- 

 tinct, equal, green with a broad scarious margin, obovate, obtuse or 

 retuse, and somewhat denticulate, the broad claw becoming gibbously 

 thickened in fruit : utricle circumscissile near the base ; margin of 

 the calyptra retracted. — Common on rocky hills near Chihuahua 

 (C. G. Pringle, September, 1886). 



Euphorbia (Cham-^syce^) tomentulosa. SufFruticose, dif- 

 fusely much branched, a foot high or less, pubescent throughout with 

 a very fine tomentum : leaves round-ovate or broadly elliptical, some- 

 what oblique, slightly cordate at base, obtuse, crenulate, shortly petio- 

 late, 2 to 4 lines long and about equalling the internodes ; stipules 

 attenuate : involucres small in small terminal cymes, turbinate, tomen- 

 tose ; lobes narrow, ciliate ; glands 4, rounded, the white appendage 

 transversely oblong or rounded : capsule subglabrous, purple, obtusely 

 lobed : seed purplish, irregularly rugose and pitted. — At Rosario in 

 northern Lower California (C. R. OrciiU, May, 1886). Near E. fru- 

 ticulosa, Engelm. 



Euphorbia (Zygophtllidium) uniglaxdulosa. Annual, low 

 and slender (6 inches high and less), glabrous : stipules glandular ; 

 leaves opposite or somewhat alternate, on slender jDetioles, ovate to 

 oblong, truncate or cuneate at base, obtuse or acutish, denticulate, 

 often with a few teeth near the base, the larger upper ones 6 or 8 lines 

 long: involucres small (J line long), with subquadrate lacerate lobes; 

 gland solitary, reniform, with a white appendage: styles deeply cleft; 

 capsule smooth, a line long : seeds subglobose, ecarunculate, irregularly 

 tuberculate. — On the shaded talus of cliffs in the Mapula Mountains, 

 Chihuahua {G. G. Pringle, October, 1886). 



