84 SPRING FLORA 



SOLANACE^. Nightshade Family. 



Herbs or shrubs with alternate exstipulate leaves. 

 Flowers regular, sympetalous, consisting of 5 sepals, 

 5 petals, 5 stamens and 1 pistil. Stigma 1; style 1; 

 ovary 1, "superior," 2- (rarely 3-5-) celled with axile 

 placentae; ripening into a many-seeded berry or 

 capsule. 



Corolla wheel-shaped; fruit a berry 1. Solatium 



Corolla salverform; fruit a capsule 2. Nicotiaau 



1. SOL.ANTJM. Nightshade. 



Annuals or perennials, with slender roots. Corolla 5-parted 

 or cleft. Stamens with filaments much shorter than anthers; 

 exserted. Anthers erect, converging around the style; the 

 pollen discharged through an opening at their apex. Fruit a 

 berry. 



1. S. triflorum Nutt. Cut-leaved Nightshade. Annual; gla- 

 brous or sparingly-pubescent. Leaves pinnately-lobed to di- 

 vided; 2-4 inches long. Inflorescence axillary, the peduncles 

 1-3-flowered. Flowers white, small, star-shaped. Berry 

 green, even when mature. In waste dry grounds. May-October. 



2. NICOTIANA. Tobacco. 



Herbs, mostly clammy pubescent. Flowers in racemes or 

 panicles. Calyx tubular; campanulate, 5-cleft. Stigma capi- 

 tate. Capsule 2-celled; 2-4-valved from the apex. Seeds small. 



1. N. attenuata Torr. Annual. Stem slender, erect, 1-2 ft. 

 high. Leaves petioled; linear or lanceolate, tapering to a 

 long point. Corolla greenish-white, the tube 1-1^ inches long 

 and the border y z inch across. Stamens included. Dry sandy 

 places. June-September. 



SCEOPHTJLARIAJ3Kffi. Figwort Family. 



Herbs (rarely shrubs ; x)r trees) with exstipulate 

 leaves. Calyx of 4-5 parts/ Corolla 2-lipped or nearly 

 regular. Stamens didynamous, diandrous, or some- 

 times pentandrous ; inserted on the corolla and alternate 

 with its lobes. Pistil 1, entire or 2-lobed, with a 1- or 

 usually 2-celled "superior" ovary bearing numerous 

 ovules on axile placentae. Fruit usually a capsule. 



Upper lip of corolla external in the bud. 



Stamens 5. I being a sterile filament or a gland. 



Sterile filament conspicuous..- 1. Pentstemon 



Sterile filament inconspicuous; represented by a 



Gland at base of corolla 2. Collinsia 



Scale on upper side of corolla 3. Scrophularia 



Stamens 4, all anther-bearing; calyx prismatic.. 4. MimuluN 

 Lower lip of corolla external in bud. 



Stamens 4, all anther-bearing; calyx tubular. . 5. Castllleja 

 Stamens 2 only 6. Veronica 



