198 UNITED STATES AND MEXICAN BOUNDARY. 



Sangre de Vrago. Dr. Gregg, who found the present species in Chihuahua and other parts of 

 Mexico, says it is astringent, and is employed hy 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 prohably 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 



The fertile flowers were not collected. 



MoziNNA CANESCENSj BeutJi. Bot. SulpJi. p. 52^ t. 25. Near Quitobaquata, Sonera, August; 



Schott. Our specimens are with staminate flowers only. I 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 

 crenate-toothed. Flowers nearly as in the two other species ; only the staminate known. 



Cnidoscolus stimulosus, Engelm, & Gray^ PI. Lindh. 1, p. 26. C. Michauxii^ PohL fide 

 Klotsch. Jatropha stimulosa, Michx. FL 2, p. 216; ML Sk. 2,^. 649. Sandy places along 

 the lower Kio 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 sub^equantibus. Santa Cruz, &c,, 

 Sonora; Thtcrher, 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 alwavs 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. B. K. Nov. Gen. <& Sp. 2, p. 105. J. macrorhiza^ 



Benth. PL Hartw. ^. 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 S-S-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, the alar one of the primary usually fertile, 

 the others staminate. Bracts ciliate. Staminate Fl. 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. Fertile Fl 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. 



Jaieopha Berlandieri (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 S-andris. On the 

 Lower Eio Grande; Wright^ No. 651. Plains near Eagle Pass and Piedra Pinta; BigeloWy 

 Schott. Monterey, Neuvo Leon; Dr. Edwards. (No. I'^IO, Wright. No. 2060 and 3124, 



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