FERNALD. — MEXICAN PLANTS. 571 



brown spines 7 mm. or less in length : leaves solitary or the upper 

 geminate, thin, elliptic-ovate, 4 to 9 cm. long, 2 to 3.5 cm. broad, deeply 

 sinuate-piunatifid into 5 or 7 unequal oblong or obovate entire or un- 

 dulate obtuse lobes ; above green and thinly pubescent with appressed- 

 stellate hairs, beneath slightly more pubescent, especially on the promi- 

 nent sometimes sparingly short-setulose nerves ; petioles slender, 1 to 3.5 

 cm. long, often sparingly setulose : peduncles lateral, 5-10-flowered, 

 becoming 6 or 7 cm. long: calyx campanulate, in the staminate flower 

 unarmed, in the pistillate with slender spines 5 mm. or less in length, 

 the 5 lance-subulate teeth 8 or 9 mm. long : corolla 4 or 5 cm. broad, 

 plicate, stellate-tomentose without, apparently sky-blue, slightly irreg- 

 ular, deeply cut into 5 ovate-lanceolate curved segments : anthers 

 yellow, subsessile, in the staminate flower the two shorter ones 1 to 

 1.5 cm. long, the three longer 3 to 3.5 cm. long, strongly curved above ; 

 in the hermaphrodite flower the two short anthers scarcely 1 cm. long, 

 the three long ones straight, 1.5 cm. long: style 2.5 cm. long, strongly 

 curved above: fruit globose, 1.25 cm. in diameter, in herbarium speci- 

 mens olive-brown ; the fruiting-calyx deeply cleft, excluding the fragile 

 elongated lance-subulate tips, about half the height of the fruit. — SiN- 

 ALOA, Topalobampo, Sept. 15-25, 1897 {Edw. Palmer, no. 178). 

 Related to the common Solanum amazonium, Ker, and to S. obtusi- 

 folium, Mart. & Gal. From *S^. amazonium it differs principally in its 

 thin deeper-lobed and greener leaves, its longer stamens and shorter 

 fruiting-calyx. From of S. obtusifoUum as described it is separated 

 by its larger leaves which are not " cordate-ovate," and its much larger 

 flowers. 



Datura villosa. Annual, 1.5 to 3 dm. high: young branches and 

 petioles villous with long white hairs: leaves 0.5 to 1 dm. long, petio- 

 late, ovate, sinuate-angulate or deeply cut, villous above and especially 

 beneath on the veins, becoming glabrate: calyx cylindric, 2.5 to 3.5 cm, 

 long, somewhat villous, with 5 short teeth : corolla narrow, twice ex- 

 ceeding the calyx, pale below, purplish at edge, with 5 short lance- 

 subulate teeth : capsule puberulent, about 5 cm. across, armed with 

 comparatively few coarse and unequal flat prickles. — .Jalisco, Bolaiios, 

 Sept. 10-19, 1897 (// N. Rose, no. 3G80) : San Luis Potosi, in 

 sand near the city of San Luis Potosi, 1876 {J. G. Schnffner, no. 70G) ; 

 in the mountains at 1,850 to 2,450 m., 1878 {Parry & Palmer, no. 658, 

 in part). — Related to D. quercifolia, HBK., with which it has been 

 confused. 



Cestrum elegans, Schlecht., var. truncata. Like the species as 



