374 SOLANACEiE. (NIGHTSHADE FAMILY.) 



-1- -f- Simple-leaved annuals. 



1 . S. triflbrum, Xutt. Low, spreading, slightly hairy or nearly glabrous ; 

 leaves oblong, pinnatijid (7 - 9-lobed) with rounded sinuses; peduncles 1-3- 

 flowered ; corolla white ; berries green, as large as a small cherry, — Central 

 Kan., and westward ; chiefly a weed near dwellings. 



2. S. nigrum, L. (Common Nightshade.) Low, much branched and 

 often spreading, nearly glabrous, rough on the angles; leaves ovate, icavg- 

 toothed ; flowers white, in small umbeNike lateral clusters, drooping ; cali/x 

 spreading; filaments hairy; berries globular, black. — Shaded grounds and 

 fields; common, appearing as if introduced, but a cosmopolite. July -Sept. 



Var. vill6sum. Mill. Low, somewhat viscid-pubescent or villous ; leaves 

 small, conspicuously angular-dentate ; filaments glabrous ; berries yellow. — 

 Established near Philadelphia, from ballast. (Adv. from Eu.) 



S. GRACiLE, Link. Cinereous-pubescent or puberulent, rather tall (2-3^ 

 high), with virgate spreading branches ; leaves ovate and ovate-lanceolate, nearlj/ 

 entire; corolla white or bluish ; calijx somewhat appressed to the black berri/ — 

 Coast of N. C, and about ballast near Philadelphia. (Adv. from S. Am.) 



* * 3Iore or less prickiij ; anthers tapering upicard ; pubescetice stellate. 



■1- Perennial ; fruit naked ; anthers equal ; corolla violet, rarely white. ' 



3. S. Carolinense, L. (Horse-Nettle.) Hirsute or roughish-pubescent 

 ivith 4- S-rayed hairs : prickles stout, yellowish, copious (rarely scanty) ; leaves 

 oblong or ovate, obtusely sinuate-toothed or lobed or sinuate-pinnatifid , ra- 

 cemes simple, soon lateral; calyx-lobes acuniinate; berries about 6" broad. — 

 Sandy soil and waste grounds, Conn, to Iowa, south to Fla. and Tex. 



4. S. elseagnifolium, Cav. Silver y-canescent with dense scurf-like pu 

 bescence of many-rayed hairs ; prickles small, slender, more or less copious or 

 wanting; leaves lanceolate to oblong and linear, sinuate-repand or entire, 

 calyx-lobes slender; herry seldom <o' in diameter. — Prairies and plains, E 

 Kan. to Tex., and westward. 



5. S. Torreyi, Gray. Cinereous ivith a someivhat close pubescence o/'about 

 equally 9-l2-rayed hairs: prickles small and stout, scanty or nearly wanting; 

 leaves ovate with truncate or slightly cordate base, sinuately 5 - 7-lobed (4 -6' 

 long) • calyx-lobes short-ovate, abruptly long-acuminate ; berry 1' in diameter — 

 Prairies, etc., E. Kan. and Tex. 



■*- -(- Annual : fruit closely covered • lowest anther much the longest , corolla yellow. 



6. S. rostratum, Dunal. Very prickly. someAvhat hoary or yellowish 

 with a copious wholly stellate pubescence (1 - 2° high): leaves I - 2-pinnatitid ; 

 calyx densely prickly ; stamens and style much declined. — Plains of Neb. to 

 Tex.; spreading eastward to 111. and Tenn. 



2. CHAM^SARACHA, Gray. 



Calyx herbaceous, closely investing the globose berry (or most of it), ob- 

 scurely if at all veiny. Corolla rotate, 5-angulate, plicate in the bud. Fila- 

 ments filiform; anthers separate, oblong. — Perennials, with mostly narrow 

 entire or pinnatifid leaves tapering into margined petioles, and filiform naked 

 pedicels solitary in the axils, refracted or recurved in fruit. {Saracha is a 

 tropical American genus dedicated to Isidore Saracha, a Spanish Benedictine ; 

 the prefix x«i"°'j ^" '^'^ ground.) 



