462 ORDER LXXXIX. OROBANCIIACE^. 



Genus VI.— NICOTIA'NA. L. 5—1. 

 (From John Nicot, of N ismos.) 



Calyx urceolate, 5 -cleft. Corolla fimuel-form, o-cleft, regu- 

 lar. Stamens 5. Stigma emargiuate. Capsule 2-valved, 

 many-seeded. 



1. N. taba'cum, (L.) Stem erect, viscidly pubescent. Leaven ovate, 

 entire, petiolate, very large. Flowem in terminal panicles and racemes; 

 tube of the corolla cylindrical, much longer than the calyx. — White, 

 tinged with pink. @. July — Aug. Introduced. 2 — 5 feet. 



Tohacco. 



Genus VIL— PETU'NIA. Juss. 



Calyx tubular, 10-nerved, 5-parted ; lobes obloiig-spatulate. 

 Corolla campanulate ; tube cylindrical or ventricose ; limb 

 spreading, plicate, 5-lobed. Stamens 5, inserted into the mid- 

 dle of the corolla tube, unequal. Ovary 2-celled, many-ovuled. 

 Seeds minute, nearly spherical. South American plants. 



1. P. el'ega^ts, (Miers.) Suffructicose, clothed with viscil, articu- 

 lated hairs. Leaves numerous, linear, obtuse ; margin revolute, canes- 

 cent beneath. Flowers axillary. Capsule small, obovate, smootli, sur- 

 rounded by the persistent calyx, 2-valved, 2-celled. Brazil. Cultivated. 



Petunia. 

 Genus VIIL— AT'ROPA. L. 5—1. 

 (From Atropos, one of the Fates.) 



Calyx with acute angles, somewhat sagittate at the base. 

 Corolla campanulate. Stamens 5, distant. Style 1. Fruit 

 baccate, globose, 2-celled. 



1. A. physalioi'des, (L.) Stem erect, much branched. Leaves alter- 

 nate, sinuate, angled, ovate, glabrous. Flowers axillary, solitary. — 

 Blue. %. June — Sept. Cultivated lands. 



There are many plants of this order in cultivation, although many are poisonous:— 

 The Solanun tuberosum, the Irish Potato, so extensively cultivated for food; the 

 Capaicun anrjuuw?, the Cayenne Pepper; the Lycopersicum e^culentum, the To- 

 mato ; and tho Petunia, belong to this order. 



Order LXXXIX.— OROBANCHA'CEJE. 



Calyx divided, persistent. Corolla hypogynous, persistent. 

 Stamens 4, didynamous. Ovary superior, with parietal pla- 

 centae. Style 1. Stigma 2-lobed. Fruit a capsule, 1-celled, 

 2-valved, with one or two placentse in the middle of the valves. 

 Seed numerous, minute. Herbaceous, parasitic plants. Leaves 

 brown, or colorless scales. 



Genus L— OROBAN'CHE. L. 13—2. 



(From oroftos, vetch, and anclio, to strangle; supposed to kill plants on v.hioh it 



grows.) 



Calyx 4 — 5-cleft ; segments unequal. Corolla ringent. Cap- 



