52. POLEMONIACE^. 223 



St. prostrate, rooting, each terminating in a roselike tuft of 1. 

 and producing a single short flowering shoot. Fl. rather large, 

 vivid blue. Barren limestone districts. Teesdale, Durham. 

 Burrin, Clare ; and between Gort and Gal way. P. IV. VI. 



E.I. 



5. G.Pneumonanthe(L.); cor. bellshaped 5-cleft, throat naked, 

 cal. entire with linear obtuse segments,^, mostly solitary slightly 

 stalked, I linear obtuse. .E. B. 20. St. 410 in. high, leafy, 

 simple, erect or ascending. Fl. very large, deep blue within and 

 with a broad greenish band down the middle of each segment. 

 Moist turfy heaths. A. VIII. IX. E. 



[G. acaulis (L.) E. B. 1594. is not a native.] 



[SWERTIA perennis (L.), which has 2 curious fringed glands 

 at the base of each segment of the cor. (E. B. 1441.), is said to 

 have been formerly found in Wales.] 



Suborder II. Menyanthidece. 



5. VILLARSIA Vent. 



1. V. nymphceoides (Vent.) ; 1. opposite roundly heartshaped 

 floating wavy at the edges, peduncles aggregate 1 -flowered, cor. 

 ciliate. E. B. 217- Limnanthemum Griseb., Koch. R. xvii. 

 1042. Floating. St. long, round, branched. L. resembling 

 those of Nymph&a alba, but much smaller. FL yellow. Caps, 

 sometimes 3-valved. Still places in rivers, rare. P. VII. VIII. 



E.I. 



6. MENYANTHES Linn. Buckbean. 



1. M. trifoliata (L.). E.B. 495. St. ascending, round, leafy. 

 L. ternate. Leaflets equal, obovate, wavy. Clusters stalked, 

 each opposite to a leaf, many-flowered. Cor. flesh-coloured, 

 densely bearded. Boggy places. P. V. VII. 



Order LII. POLEMONIACE^. 



Cal. inferior, 5-parted, persistent. Cor. hypogynous, regular, 

 5-lobed. Stam. 5, unequal, on the tube of the corolla. Ovary 

 3-celled. Stigmas 3-fid. Caps. 3-celled, 3-valved ; valves sepa- 

 rating at the axis. 



1. POLEMONIUM. Cal. 5-fid. Cor. rotate, with a short tube 

 and 5-lobed limb ; throat nearly closed by the dilated bases 

 of the filaments. G. F. G. Gam. i. 62. 



