76 PROCEEDINGS OF THE AMERICAN ACADEMY 



Euphorbia pediculifera, Engelm., var. linearifolia. Closely 

 resembling the ordinary form in the characters of the inflorescence and 

 fruit, but erect and branching above the base, the stem and leaves 

 mostly glabrous ; leaves thin, glaucous beneath, linear, acutish at both 

 ends, an inch long or less. In both forms the appendages are unequal, 

 the upper pair larger and oblique. — Hills and mountains about Guay- 

 mas. (215, 627.) 



Euphorbia Californica, Benth.? Probably not only this spe- 

 cies but also E. Bindsiana, Benth. A shrub 3 or 4 feet high, with 

 slender branches ; leaves round-obovate, 3 to 6 lines long, obtuse or 

 retuse, on very slender petioles longer than the blade : peduncles ter- 

 minal, mostly solitary : appendages lobed or merely crenate even in 

 the same involucre : lobes of the capsule (2 lines long) scarcely cari- 

 nas. — High mountain ravines above Guaymas, (260.) 



Euphorbia misera, Benth. A shrub 3 to 5 feet high. On stony 

 mountain-sides above Los Angeles Bay. (514.) 



Euphorbia eriantha, Benth. Rocky ridges about Guaymas and 

 Los Angeles Bay. (84, 518.) 



SiMiiONDsiA Californica, Nutt. Common about Guaymas. (343, 

 344.) 



Jatropha canescens, Miill. " Sangre en grado." A shrub, 3 to 

 8 feet hiorh, with rose-colored flowers, and thick clustered roots. A 

 decoction of the plant is used as a mordant in dyeing, and the juice as 

 a remedy for warts, diseased gums, sore throats, etc. Common on the 

 mesas about Guaymas. (103.) 



Jatropha spathulata, MulL, var. sessiliflora, Miill. " Tocote 

 prieto." A shrub, 5 to 15 feet high, common about Guaymas and 

 Los Angeles Bay. The fruit of this variety appears to be always 1- 

 coccous. The bark is used as a mordant and for tanning, and is ex- 

 ported for these purposes. It is also a dye, giving a reddish brown 

 color, but is injurious to cloth. (164, 576.) 



Jatropha Palmeri. A shrub, the branches softly pubescent: 

 leaves round-ovate, coarsely and very acutely sinuate-dentate (the 

 teeth glandular-tipped), densely and subtomentosely pubescent on both 

 sides, 1-2" inches long by 2 wide or smaller: panicles shorter than the 

 leaves ; flowers apetalous, the wliite cylindrical pubescent calyx 4 or 

 5 lines long, with round-ovate lobes: stamens of male flowers 10, in 

 two unequal ranks, the filaments connate and disk densely tomentose : 

 ovary densely pubescent (becoming 3 or 4 lines long), the styles twice 

 bifid. — Apparently referable to Miiller's subsection Calyptrosolen, hut 

 it is more shrubby in habit and the calyx is less deeply lobed. Only 



