DICOTYLEDONS. — GEXTi anf..^:. Gciitiana. 2.'27 



Ordeji XXI\'. POLEMONIACEiE. Juss. 



Cat. fj-partite, persistent. Cor. monopetalous, hypogynous, re- 

 gular, 5-lobed. Sta77i. 5, inserted into the middle of the 

 tube of the cor., and alternate with its segments. Style 1. 

 Stigma simple. Caps. 3-celled, 3-valved, many-seededj 

 valves having in their middle the dissepiments, which are op- 

 posite to the angles of the distinct receptacles. Seeds nume- 

 rous. Embryo in the axis of a fleshy albumen. 



Herbs or Shrubs. Leaves alternate or opposite. Flowers ter- 

 minal or axillary. Juss, 



1 . POLEMONIUM. 



Cal. urccolate, 5-cleft. Cor. rotate, the tube short, the limb 5- 

 lobed. Slam. 5; filaments broader at the base, inserted upon 

 the ,") teeth or valves, which close the orifice of the cor. Anth. 

 incumbent. 



1. P. ccerulbum, leaves piimated, flowers erect, cal. longer than 

 the tube of the cor. p. 1\. — Woods and banks, rare. 



Order XXV. GENTIANE.E. Ji^ss. 



Cal. 1 -leaved, divided, persistent. Cor. 1-petalous, Iiypogy- 

 nous, generally regular, withering or deciduous; limb equal, 

 with the same number of divisions as the cal., generally 5, 

 sometimes 4 — 8, with an imbricated aestivation. Stam. in- 

 serted into the cor., alternate with its segments to which they 

 are equal in number; some rarely abortive. Ovary single, 

 I — 2-celled, many-seeded. Style 1 or 2. Stigma 1 or 2. 

 Capsule (sometimes Berry) many-seeded, 1 — 2-cellcd, gene- 

 rally 2-valved; valves with their margins bent inwards, in the 

 unilocular genera bearing the seeds; in the bilocular genera 

 inserted into the central receptacle. Seeds small. Embryo 

 straight, in the axis of a soft fleshy albumen. Radicle oppo- 

 site the hilum. 



Herbs, rarely Shrubs. Leaves opposite, without stipules. Flo7V- 

 ers terminal or axillary. Br. 



1. GENTIANA. 



Cal. A — 5-cleft. Cor. infundibuliform and hypocrateriform, 4 — 5- 

 cleft, with the orifice naked. Stigma 2-lobed. Caps, l-celled. 

 Seeds without any margin. 



* Mouth of the cor. naked, not ciliated. 

 1. G. nivalis, cor. 5-cleft infundibuliform, branches alternate 

 I -flowered, cauline leaves lanceolate, p. 86. — Alps* 



[V 2] 



