198 UNITED STATES AND MEXICAN BOUNDARY. 
Sangre de Drago. Dr. Gregg, who found the present species in Chihuahua and other parts of 
Mexico, says it is astringent, and is employed by the natives as a remedy for sore gums and 
loose teeth. Mr. Schott found on the Sierra del Tule and Tinaja Alta, in Sonora, incomplete 
specimens of a Mozinna, which is probably a variety or state of M. spathulata, The leaves are 
about one-third of an inch long, obovate-cuneate, obtuse or emarginate, and the inflorescence is 
more expanded, so as to be somewhat paniculate. The fertile flowers were not collected. 
MoziNNA canescens, Benth. Bot. Sulph. p. 52, t. 25. Near Quitobaquata, Sonora, August; 
Schott. Our specimens are with staminate flowers only. І fear this is not sufficiently distinct 
from M. cordata, Ort. 
MozINNA CARDIOPHYLLA (n. sp.): foliis late cordatis acuminatis petiolatis crenato-dentatis ; 
floribus masculis paniculatis. Near Tucson and Sierra Verde, Sonora, June; Schott. Plant gla- 
brous, apparently 1—2 feet high. Leaves about an inch long, broadly cordate, rather coarsely 
erenate-toothed. Flowers nearly as in the two other species; only the staminate known. 
CniposcoLus STIMULOSUS, Engelm. & Gray, Pl. Lindh. 1, p. 26. C. Michauxii, Pohl. fide 
Klotsch. Jatropha stimulosa, Miche. Fl. 2, p. 216; ЕП Sk. 2, р. 649. Sandy places along 
the lower Rio Grande and westward to Sonora. (Nos. 1071 and 2501, Berlandier.) Variable 
in the size and outline of the leaves. 
CNIDOSCOLUS ANGUSTIDENS (n. sp.): herbaceus, pilis urentibus hispidus; foliis ad mediam 3-5- 
lobatis, lobis grosse inciso dentatis, dentibus angustis elongatis acutisimis macronato-setaceis ; 
floribus cymosis, centrali foeminei; calycis laciniis tubo gubzequantibus. Santa Cruz, &o., 
Sonora; Thurber, Schott. (No. 1809, Wright.) Plant one to two feet high, more or less hispid 
with stinging hairs. Leaves remarkable for the long narrow salient teeth, which terminate in 
a rigid bristle; the lamina sometimes nearly smooth, but the petiole always hispid. Flowers 
as large as in C. stimulosus, but the tube of the petaloid calyx much shorter. Stamens 10; 
the filaments monadelphous about half their length, in two series of five each; the interior 
about one-third longer than exterior. At the base of the column are five small sessile glands. 
JATROPHA MULTIFIDA, Linn. Sp. p. 1429; H. В. K. Nov. Gen. & Sp. 2, p. 105. J. macrorhiza, 
Benth. Pl. Hartw. p. 8? Plains along the Rio Grande from the Presidio del Norte downward 
to Neuvo Leon, and westward to Sonora, May-July. (No. 1808, Wright.) Plant about a foot 
high, herbaceous from a thick root or rhizoma. Leaves 3—5-lobed, the lobes oblong-lanceolate, 
laciniate and toothed, the teeth very acute and pointed with a bristle. Stipules deeply laciniate 
with subulate segments. Flowers in terminal cymes, ће alar one of the primary usually fertile, | 
the others staminate. Bracts ciliate. SrAMINATE Fr. Calyx deeply 5-parted ; the segments 
laciniate-toothed. Corolla white, about twice as long as the calyx ; segments obovate-spatulate. 
Stamens 8, monadelphous below, 3 of them longer than the other 5; the column with 5 erect 
cuneate emarginate-glands at the base. Ferrie Fu Calyx and corolla nearly as in the 
staminate, except that the segments of the former are more laciniate, Style 3-parted nearly to 
the base; the divisions 2-cleft at the summit. Capsule about half an inch in diameter, nearly 
smooth, (granular when dry.) Seeds oblong, light brown with purple spots. Mr. Thurber 
informs us that the Mexicans know the seeds of this species to be purgative. 
JATROPHA DERLANDIERI (n. sp): glabra; foliis radicalibus longissime petiolatis glaucis pal- 
matim 5-T-partitis, segmentis oblongis vel obovatis laciniato-dentatis vel pinnatifido-incisis ; 
calycis segmentis ovatis integris corolla multo brevioribus ; floribus masculis 8-andris. On the 
Lower Rio Grande; Wright, No. 651. . Plains near Eagle Pass and Piedra Pinta; Bigelow, 
28212322 
_ Schott. Monterey, Neuvo Leon; Dr. Edwards. (No. 1810, Wright. Мо. 2060 and 3124, 
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