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hoary beneath: peduncles usually terminal and erect, rather long and stout, bear- 
ing a many-flowered cyme: corolla white, downy outside, 5-parted, lobes ovate: 
ovary woolly.—A Mexican species found very near the Texan borders. 
+ + More or less prickly: anthers more or less elongated and tapering at apex. 
+ Corolla 5-parted : pubescence all of simple hairs. 
5, S. aculeatissimum Jacq. Villous with scattered long and weak-jointed hairs, 
or soon glabrate, beset (even to calyx) with slender-subulate straight prickles: 
leaves rather large, membranaceous, ovate or slightly cordate, mostly sinuate-pin- 
natifid: corolla white: berry globose, becoming red or yellow.—An introduced 
weed near dwellings, native of the tropics, and extending through Texas into the 
Gulf States. 
++ ++ Corolla 5-cleft or angulate-5-lobed: pubescence all or partly stellate. 
— Fruiting pedicels recurved or refleced ; mature berries naked, merely subtended by calya : 
corolla violet, rarely white. 
6. S. eleagnifolium Cav. Silvery-canescent with dense scurf-like pubescence of 
many-rayed hairs: prickles small, slender, more or less copious or wanting: leaves 
lanceolate to oblong and linear, sinnate-repand or eutire: ealyx-lobes slender: berry 
seldom 12 mm. in diameter. (GS. Tecense Eng. & Gray PI. Lindh.)—Prairies and 
plains, throughout Texas. The “trompillo” of the Mexicans. Commonest of weeds 
in valleys of southern and western Texas. The berries, first green, then yellow, 
finally black, the size of small marbles, are used for eurdling milk by natives of 
northern Mexico and southern Texas. (Havard.) 
7. S. TorreyiGray. Cinereous with asomewhat close pubescence of about equally 
9 to 12-rayed hairs: prickles small and stout, scanty or nearly wanting: leaves ovate 
with truneate or slightly cordate base, sinuately 5 to 7-lobed (10 to 15 em. long): 
calyx-lobes short-ovate, abruptly long-acuminate: berry 25mm, in diameter. (S.mam- 
meum? Eng. & Gray Pl. Lindh.)—Prairies, throughout Texas. 
8. S. Carolinense L. (Horse-NETILE.) Hirsute or roughish-pubescent with 4 to 
8-rayed hairs: prickles stout, yellowish, copious (rarely scanty): leaves oblong or 
ovate, obtusely sinuate-toothed or lobed to sinuate-pinnatifid: racemes simple, soon 
lateral: calyx-lobes acuminate: berries about 12 mm. broad.—Sandy soil and waste 
ground, extending into Texas from the Atlantic region. 
— = Fyuiting pedicels merely spreading: berry wholly or partly enveloped by the loose 
calyx: pubescence partly simple. 
9. S. sisymbriifolium Lam. Green, stout, villous-pubescent with simple more or 
less glandular and viscid hairs, mixed on the leaves with some few-rayed stellate 
hairs, much armed (even to calyx) with long-subulate straight prickles: leaves 
deeply pinnatifid and the oblong lobes sinuate or even again somewhat pinnatifid: 
tlowers in terminal or lateral pedunculate racemes: corolla light blue or white, 2.5 
em, or more in diameter: berry red.—Adveutive or escaped from cultivation. (Nat. 
of S. Am.) 
** Fruit inclosed by close-fitting and horridly prickly calyx: lowest anther much the 
longest: stamens and styles much declined: annuals armed with straight prickles. 
10. S. heterodoxum Dunal. Pubescent with glandular-tipped simple hairs, with 
avery few 5-rayed bristly ones on upper face of the irregularly or interruptedly 
bipinnatifid leaves; their lobes roundish or obtuse and repand: corolla violet: 4 an- 
thers yellow, and large one tinged with violet.—Western Texas, Leaves watermelon- 
like in form and division (Gray). 
11. S. rostratum Dunal. Somewhat hoary or yellowish with a copious wholly 
stellate pubescence: leaves nearly as in the preceding or less divided, some of them 
only once pinnatifid: corolla yellow.—Plains, throughout Texas. 
