SOLANACESI. 267 



linels long: calyx lobes ovate lanceolate, acutish, overlapping, much 

 shorter than the cylindric or urn-shaped corolla-tube: corolla-lobes much 

 shorter than the tube, ovate-lanceolate, acute, minutely crenulate or 

 papillose: anthers oval, subsessile: scales narrow fringed, reaching to 

 the middle of the tube: slender styles longer than the pointed ovary: 

 capsule conical, capped by the withered corolla, usually 1-seeded. — 

 Common in all the hilly districts, usually on shrubs or coarse herbs. 



Order LXXV. S L A N A C E £ , 



Herbs or shrubs, commonly rank-scented and with colorless narcotic 

 juice. Leaves alternate, exstipulate. Flowers regular, 5-merous, 5- 

 androus, their pedicels bractless. Corolla usually plaited in aestivation. 

 Ovary 2-celled, with axial placentae; style single. Fruit capsular or 

 baccate, many-seeded. Seeds with curved embryo in fleshy albumen. 



Corolla rotate or campanulate; fruit a berry Solanum 1 



Corolla elongated; fruit a capsule; 



Pericarp thick, prickly Datura 2 



Pericarp thin and smooth; 



Calyx merely toothed or lobed Nicotiana 3 



" 5-parted; segments foliaceous Petunia i 



1. SOLAUTJM, Pliny. Calyx and corolla 5-parted or -cleft, the latter 

 rotate or nearly bo, and valvate in the bud. Filaments short: anthers 

 distinct but connivent; the cells with a terminal opening. Style long: 

 stigma entire. Fruit a berry, containing many flattened seeds. 



1. S. villosum, Lam. Annual, stoutish, depressed, the branches 1 

 ft. long, somewhat flexuous, and with one or more slight angles, the 

 whole plant villous-hirsute: leaves rhombic-ovate, 1 in. long or more, 

 strongly sinuate-dentate : corolla white, minute : berries of a clear deep 

 green when ripe, and half invested by the shallow-campanulate calyx. — In 

 fields and gardens. 



2. S. AiiATUM, Moench. Similar to the last, but with angular stem 

 and red berries. — Said to have been found about San Francisco Bay; 

 but we doubt the identification. 



3. S. Douglasii, Dunal. Somewhat shrubby, widely branching, and 

 even half climbing by the rough angles of the branchlets, 3 — 5 ft. high: 

 leaves ovate with cuneate base, 1 — 2 in. long, nearly entire: corolla 

 bluish, 3—5 lines wide: berries black.— Plentiful along stream banks and 

 elsewhere in half shady places; flowering and fruiting in many instances 

 almost throughout the year. 



4. 8. unibelliferum, Esch. Stoutish cinereous and tomentose-pubes- 

 cent shrub, 3 — i ft. high: leaves thin, ovate or obovate, or oblong, obtuse 

 entire, acute or cuneate at base, 1—2 in. long: umbels short-peduncled, 

 few-flowered: corolla about % in. broad, deep blue, with greenish spots at 



