DICOTYLEDONS. GENTiANE/E. Gcntuma. 227 

 ORDER XXIV. POLEMONIACE^E. Juss. 



Cal. 5 -partite, persistent. Cor. monopetalous, hypogynous, re- 

 gular, 5-lobed. Stam. 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-seeded; 

 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. 



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

 minal or axillary. Juss. 



1. POLEMONIUM. 

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



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



the 5 teeth or valves, which close the orifice of the cor. Anth. 



incumbent. 

 1 . P. cceruleum, leaves pinnated, flowers erect, cal. longer than 



the tube of the cor. p. 74. Woods and banks, rare. 



ORDER XXV. GENTIANEJS. Juss. 



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

 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, 

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

 Capsule (sometimes Berry] many-seeded, 1 2-celled, gene- 

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

 uni Jocular 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. Floiv- 

 ers terminal or axillary. Br. 



1. GENTIANA. 



CalA '5-cleft. Cor. infundibuliform and hypocrateriform, 4 5- 

 cleft, with the orifice naked. Stigma 2-lobed. Caps. 1 -celled. 

 Seeds without any margin. 



* Mouth of the cor. naked, not ciliated. 



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

 1 -flowered, cauline leaves lanceolate, p. 86. Alps. 



