PL ex. cor. 27. GENTIAK'£. 99. Menyanthes. 341 



i2oo^ black; stem ascending, branched at bottom ; leaf- 

 lets toothed, repand ; floivers peduncled, flesh-colour. — 

 Leaves extremely bitter, used instead of hops, and to de- 

 stroy worms, as also in rheumatism and dropsy ; they are 

 also smoked. 



Fam. XI. 28. POLEMONIACE^E. Ventenat. Polemonii, 



Jussieu. Pulejyionidece, Persoon. 

 Personates, Adanson. 



Calyx 1-leafed, divided, persisting; corolla 1-petaled, 

 hypogynous, regularly 5-lobed ; stamens 5, inserted in the 

 middle of the tube of the corolla, alternating with the lobes; 

 ovary 1, free, 3-celled, many-seeded, girt at the base with 

 an annular gland; style simple; stigmata 4* ; capsule S-ceWed, 

 3-valved; dehiscence loculicidal; spermophore axile, 3-sided, 

 angles opposed to the middle of the valves : seeds many, 

 peritropal ; spermodermis membranaceous ; perisperm 

 fleshy ; corculum straight, transverse ; radicle below ; cotyr 

 ledons elliptical, leaflike, — Stem herbaceous ; leaves opposite 

 or alternate ; Jlowers terminal or a^iillary. 



I. 100. POLEMONIUM. Dioscorides. JacoVs ladder. 

 Calyx pitchershape, 5-cut ; corolla bellshape, rotate ; 

 tube short; limb 5-lobed; stamens 5; filaments dilated, 

 villous at bottom ; anthers oval, incumbent ; capside 3-celled ; 

 cells 2- seeded: seeds angular. — Herb erect; leaves alter- 

 nate, pinnate with an odd leaflet ; Jlowers subcorymbose, 

 germinal. 



Polemonium vulgare. Common Ja col/ s ladder. 



Flowers upright; calyx longer than the tube of the co- 

 rolla ; root fibrous. 



Polemonium vulgare cffiiuleum et album, Raii Syn. 288, 1. 

 Valeriana Graeca, Ger.em. 1076; Park, 122. * 



Polemonium cssruleum, Lin. S. P. 280. 

 Polemonium datum, Salisb. Prod. 125, 

 Greek valerian. Ladder to heaven, SetwalL 



Limestone rocks ; perennial ; June. 

 Stem pubescent, angular ; leaflets 14 to 17 parr, ovate, 

 unequal at the base ; corolla blue or white. 



