GENTIANACBiE. 



81 



Corolla funnelshaped-rotate, bearded at the throat ; segments 

 broadly obovate, shortly fimbriate round the margins. Seeds few, 

 winged, ciliated. 



In ponds and by the margins of slow-running rivers. Rare. In 

 the counties of Sussex, Surrey, Oxford, Bucks, Berks, Gloucester, 

 Middlesex, Essex, Norfolk, Cambridge, Huntingdon, Northampton ; 

 in all of which it appears to be wild. In the counties to the 

 north of these, though it occurs as far north as Perth and Lanark, 

 it has probably been planted. 



England, [Scotland.] Perennial. Late Summer 

 and Autumn. 



Eootstock rather slender, creeping in the mud, and producing at 

 distant intervals tufts of roots, alternate leaves, and flowering-stems, 

 which reach the surface of the water, the latter generally spotted 

 with red. Petioles varying in length according to the depth of the 

 water; those of the leaves from the rootstock not dilated at the 

 base, those on the flowering-stem much dilated and sheathing at the 

 base. Leaves 1^ to 4 inches in diameter, rather longer than broad, 

 shining green blotched with blackish - purple above, dim and 

 usually purple below, roughened and thickly dotted with small 

 glands. Umbels sessile, of numerous flowers, expanding one after 

 the other. Elowers 1 to 1^ inch across, bright yellow, the corolla 

 very thin in texture, strongly bearded at the throat. Stamens in- 

 cluded. Capsule flask-shape, acuminate, green often tinged with 

 purple, longer than the calyx-segments. Plant glabrous. 



Mound-leaved Buchbean. 



EXCLUDED SFECIES. 



GENTIANA ACAULIS. Linn. 

 Eng. Bot. No. 1594. 

 Stated to have been found wild near Haverford West, Pem- 

 brokeshire, and on the sand-hills, near Liverpool ; but doubtless 

 this plant of the Alps had either escaped from cultivation in these 

 stations, or G. pneumonanthe was mistaken for it. 



SWERTIA PERENNIS. Linn. 

 Eng. Bot. No. 1441. 



Said by Hudson to have been found in Wales by Richardson, 

 but no one else has met with it, and there are no British specimens 

 to vouch for its occurrence there. 



VOL. VI. M 



