452 ORDER LXXXIX OROBANCHACEjE. 



Genus VI.— MCOTTA'NA. L. 5—1. 

 (From John Nicot, of Nismes.) 



Calyx urceolate, 5-cleft. Corolla funnel-form, 5-cleft, regu- 

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

 many-seeded. 



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

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

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

 tinged with pink. 0. July — Aug. Introduced. 2 — 5 feet. 



Tobacco. 

 Genus VII— PETU'NIA. Juss. 



Calyx tubular, 10-nerved, 5-parted ; lobes oblong-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-ovulecL 

 Seeds minute, nearly spherical. South American plants. 



1. P. el'egans, (Miers.) Suffructicose, clothed with viscM, articu- 

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

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

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



Petunia. 

 Genus VIII— AT' HOP A. 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. 0. June — Sept. Cultivated lands. 



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

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

 Cdpsicun annuum, tho Cayenne Pepper; the Lycvpersicum esculentum, the To- 

 mato ; and the Petunia, belong to this order. 



Order LXXXIX.— OROBANCHA'CE^E. ' 



Calyx divided, persistent. Corolla hypogynous, persistent. 

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

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

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

 Seed numerous, minute. Herbaceous, parasitic plants. Leaves 

 brown, or colorless scales. 



Genus I.— OROBAN'CHE. L. IS— 2. 



(From orobos, vetch, and anoho, to strangle ; supposed to kill plants on vrhich it 



grows.) 



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



