CL. V.] PENTANDEIA MONOGYNIA. 121 



Capsule egg-shaped, one-celled, two-valved. Seeds numerous, 



attached to the margins of each valve. Named from mene, a 



month, and anthos, a flower. 98. 



1. M. trifoliate^ Marsh Trefoil. Bog-bean. Leaves ternate, disk of 



the corolla shaggy. Root large, black, creeping : stems round : 



leaves ternate on round foot- stalks : clusters stalked, opposite the 

 leaves : corolla flesh-coloured, the filaments white. This beautiful 

 plant is possessed of powerful medicinal properties : an infusion of 

 the leaves is extremely bitter, and is prescribed in rheumatisms and 

 dropsies : it may be used as a substitute for hops in making beer, 

 and is employed as a purgative for calves. Perennial : flowers in 

 June and July : grows in marshy places, ditches, pools, and shallow 

 lakes : abundant. Eng. Bot. vol. vii. pi. 495. Eng. Fl. vol. i. p. 

 275. 315. 



14. VILLA'RSIA. VILLARSIA. 



Calyx inferior, of one leaf, deeply divided into five segments. 

 Corolla of one petal, wheel-shaped, with a limb often fringed 

 with hairs. Capsule one-celled. Seeds numerous, attached to 

 the margins of each valve. Named in honour of M. de Villars, 

 a French botanist. 99. 



1. V. nymph&oides. Fringed Bog -bean, or Water Lily. Leaves 



heart-shaped, waved at the edges, floating ; corolla fringed. 



Stems several feet long : flowers axillar : corolla yellow, with a 

 darker disk. Perennial : flowers in July and August : grows in 

 ponds and rivers : rare. In several parts of the Thames ; in the Isis. 

 Eng. Bot. vol. iv. pi. 217. Menyanthes nymphceoides. Eng. Fl. vol. i. 

 p. 276. 316. 



15. HOTTO'NIA. FEATHERFOIL. 



Calyx inferior, of one leaf, deeply divided into five linear seg- 

 ments. Corolla of one petal, salver-shaped, with a cylindrical, 

 open tube, the limb divided into five oblong, notched, equal 

 segments. Filaments awl-shaped, short ; anthers oblong. Ger- 

 meri globular, pointed. Style short, cylindrical; stigma globular. 

 Capsule globular, pointed, one-celled, five-valved. Seeds 

 numerous, roundish. Named after a Leyden professor, P. 

 Hotton. . 100. 



\.H.palustris. Water Feather/oil. Water Violet. Stalks solitary ; 



many-flowered ; partial stalks whorled. Foliage under water, the 



flowers alone rising above the surface : leaves deeply pinnatifid, 

 with linear segments : flowers in numerous whorls, lilac-coloured, 

 of the shape of those of the primrose. Perennial : flowers in June: 

 grows in ditches and ponds, in England : not common. Eng. Bot. 

 vol. vi. pi. 364. Eng. FL vol. i. p. 277. 317. 



16. LYSIMA'CHIA, LOOSE-STRIFE. 



Calyx inferior, of one leaf, deeply divided into five acute 

 segments. Corolla of one petal, wheel-shaped, without a tube, 

 the limb divided into five egg-shaped segments. Filaments 

 awl-shaped; anthers oblong, notched at both ends. Germen 

 roundish. Style thread-shaped, as long as the stamens ; stigma 

 obtuse. Capsule globular, pointed, one-celled, ten-valved. 

 L 2 



