198 SCROPHULARIACEAE (FIGWORT FAMILY) 



EE. Leaves ovate, merely wavy-toothed; berries black or yellow. W. C. E. — 

 The berry of the wild plants is poisonous. The Wonderberry is an edible culti- 

 vated form. S. nigrum (common nightshade) 

 DD. Perennial; hairs stellate; corolla 16-20 mm. wide; leaves all entire, acute 

 or narrowed at base; berry purple. U. S. umbelliferum 

 AA. Plant prickly; corolla 25-50 mm. wide; calyx in fruit spiny. 

 F. Corolla white or light blue; fruit only partly covered by the calyx. 

 G. Fruit less than i cm. long, almost covered by calyx. W. S. sisymbrifolium 

 GG. Fruit 2 dm. or less long, very much exceeding the calyx. E. — Cultivated 

 for its edible fruit. S. melongena (egg plant) 

 FF. Corolla yellow; fruit quite covered by the calyx. E. — A bad ^eed in culti- 

 vated fields. S. rostratum (buffalo bur) 



DATURA (Thorn Apple) 



Herbs, annual, erect. Flowers large, white or purple or violet. Calyx 

 tubular or prismatic, circiunscissile near the persistent base. Corolla 

 plicate ; lobes acuminate. Ovary 2-4-celIed. Capsule globose or ovoid. — 

 (From Dhatura, the Hindoo name.) Medicinal. Poisonous. 



A. Stem green; corolla white; lower prickles of the fruit shorter than the others. E. 



D. stramonium (stramonium) 



AA. Stem purple; corolla purple or violet; prickles of the fruit all of the same length. 



E. D. tatula (purple thorn apple) 



NICOTIANA (Tobacco) 



Herbs. Leaves large. Flowers white or green or purple, in terminal 

 racemes or panicles. Calyx 5-8-cleft. Corolla plicate, limb 5-8-lobed. 

 Ovary 2-8-ceIled. Seeds very small. — (Honor of J. Nicot, a French Am- 

 bassador, who early sent tobacco seed to Italy.) 



A. Leaves all with slender petioles; corolla limb 8-12 mm. wide; calyx teeth much 



shorter than its tube. E. N. attenuata 



AA. Leaves of some of the upper ones sessile; corolla limb 20-40 mm. wide; calyx 



teeth about equaling its tube. 



B. Leaves 2-6 dm. long. W. — Cultivated for its leaf. N. tabacum (tobacco) 



BB. Leaves shorter. 



C. Corolla 25-50 mm. long; capsule 2-celled. U. N. blgelovil 



CC. Corolla 20-25 mm. long; capsule 3-8-celled. U. E. N. quadrivalvls 



SCROPHULARIACEAE (Figwort Family) 



Herbs or shrubs. Leaves alternate or opposite or whorled; 

 stipules none. Flowers perfect, mostly irregular. Calyx persis- 

 tent, i-s-toothed to -divided, sometimes split. Corolla sympetalous, 

 rarely none in Synthyris; limb 2-lipped or nearly regular, variously 

 colored. Anther-bearing stamens 2-5, 2 often shorter, on the co- 

 rolla, alternate with the corolla lobes ; antherless stamens often 

 present. Pistil i, entire or 2-lobed; ovary superior, 1-2-celled; 

 placenta central; style i. Fruit a capsule. Seeds few or many. 



