148 PROCEEDINGS OF THE AMERICAN ACADEMY 



sepals oblong or oblong-obovate, acutish, 2 lines long: styles thrice 

 dichotomous ; capsule depressed, 2^} lines broad : seeds triangular- 

 ovate, minutely and irregularly jjitted. — At Las Palmas, Sau Luis 

 Potosi ; June, 1890 (n. 3080). 



Manihot Pringlei. Apparently herbaceous, glabrous : leaves 

 long-petioled, o-parted to the base, the divisions 3 or 4 inches long, 

 narrowly lanceolate or oblong-lanceolate, very acutely short-acumi- 

 nate, usually obtusely lobed by a more or less broad and deep sinus 

 on each side, glaucous beneath ; stipules caducous, small and subulate ; 

 bracts of the long-pedunculate corymbose raceme foliaceous, narrowly 

 lanceolate and aciuiiinate, denticulate, G to 12 lines long; pedicels 

 erect, usually bearing a bracilet or two: perianth of the staminate 

 flowers glabrous, campanulate, G to lines long, cleft nearly to the 

 middle, the lobes valvate ; stamens 10; disk large, 54obed ; pistilhite 

 flowers narrower, the calyx 5-parted ; disk conspicuous, entire : IVuiting 

 peduncles 2 inches long or more, erect; capsule glabrous, 8 lines long. 

 — On limestone hills at Las Canons, San Luis Potosi; July, 1890 

 (n. 3558). Somewhat resembling M. Cartliaginensis. 



AcALYPHA DissiTiFLORA. Perennial, herbaceous, slender, a foot 

 high or more, dioecious, the fertile plant branching above, the stami- 

 nate simple above the base, pubescent : leaves thin, ovate, 3-5-nerved, 

 acute or shortly acuminate, rounded at base, serrate, somewhat ap- 

 pressed-hairy, 1 to 1^ inches long on slender petioles 3 to 6 lines long: 

 spikes axillary, very slender, pedunculate, 1 or 2 inches long, the stami- 

 nate very rarely with a pistilhite flower at base, the pistillate with 

 flowers much scattered ; bracts 1 -flowered, scarcely a line high, acutely 

 5-7-toothed, shorter than the pubescent capsule : styles short, pecti- 

 nately divided. — On limestone ledges in Tamasopo Caiion, San Luis 

 Potosi; July, 1890 (n. 3083). A strongly marked species, in ]Muel- 

 ler's arrangement falling near A. clUptica. 



AcALYPiiA MULTISPICATA. Perennial, herbaceous, the numerous 

 stems simple, about a foot high, pubescent with recurved woolly hairs; 

 difccious: leaves subsessile, 3-5-nerved at base, the lower ovate or 

 obovate and obtuse or acute, the upper lanceolate and acute, serrate, 

 strigose-pubescent, 1 or 2 inches long: spikes pedunculate in nearly 

 all the axils, the staminate slender, dense, 4 to 1 indi long, the pis- 

 tillate short and mostly few- (1-10-) flowered; bracts 1-flowcred, 

 reniform, acutely 7-11-toothed, becoming 2 or 3 lines long: styles 

 pectinately divided; capsule pubescent. — On hillsides near Guada- 

 lajara; July, 1889 (n. 2903). In the same group with the last 

 species. 



