VOL. 5] Plants from Sinaloa, Mexico. 209 
Guaymas specimens. On the sand near the coast at Altata there 
is a prostrate form, widely spreading. 
Euphorbia adenoptera Bertol. A conspicuous form on account 
of the large, bright red appendages to the glands. Cofradia. 
Luphorbia villifera Scheele. Cofradia and Cerro Colorado. 
The smaller plants belong to var. muda and the larger are more 
or less villous about the lower part of the stems. 
Euphorbia pediculifera Englm. Var. inornata. Glands with- 
out appendages, other characters those of the species. Cofradia. 
Euphorbia gracillima Watson. Culiacan and Cofradia. Com- 
pared with the type by Dr. J. M. Greenman. 
Pedilanthus rubescens. Stems numerous, 1-2 m. high, much- 
branched; leaves nearly glabrous, ovate-lanceolate, cuneate at 
base into a short petiole, 9 cm. long, 3.5 cm. wide, the upper and 
floral brick red, midrib winged and excurrent at the tip; involucre 
pubescent, cuneate at base, 15 mm. long; the two.inferior lobes 
oblong-oval; the two intermediate ones narrow-linear, erose at 
apex, united with the two larger four-fifths their length; fifth 
lobe linear-acuminate; appendix bearing two fleshy deltoid, 
acuminate, bilobed segments; filaments glabrous; capsule smooth, 
on a stipe 1 cm. long, tipped when young with a style nearly as 
long, 12 mm. wide; seeds dark brown, pubescent, quadrangular, 
oblong, pointed. 
This species is not uncommon about Culiacan, growing in the 
shade of other larger vegetation. The brick red color of the 
involucres and floral leaves is conspicuous. ‘The plant is con- 
sidered poisonous by the people of the neighborhood. 
Hippocratea Mexicana Miers. Cerro Colorado, and an unde- 
termined species from Cofradia. 
Heliocarpus glaber. A bush or small tree with spreading 
top; branches rough with remains of old glands: leaves glabrous, 
cordate or rounded at base, ovate-acuminate, serrate with rounded 
teeth, 5-merved, ro cm. long, 8 cm. wide, on puberulent petioles 
7-9 cm. long; infloresence a large, spreading panicle; pedicels 
2-3 mm long, stellate-pubescent; stipe less than 1 mm. long; 
fruit orbicular or oval, 6 mm. in diameter including the plumose 
