313 GENTiANACE^. — coNVOLvuLACE^. [Menyauthes. 



IV. Menyanthes, Linn. Buckbean. 



" Calyx 5-partite. Corolla funnel-shaped, fleshy, the segments 

 hairy within. Stamens 5. Stigma 3-lobed. Capsule 1 -celled, 

 2 - valved ; valves bearing the seeds along their middle ; seeds 

 parietal." — Br. Fl. 



I. M. trifoliata, L. Buckbean or Boghean. Marsh Trefoil. 

 Br. Fl. p. 269. E. B. t. 495. 



In spongy peaty bogs, drains, ditches, watery meadows and swampy thickets ; 

 not uncommon. Fl. May — August. Fr. June, &e. If. 



E. Med. — On Sandown level, but sparingly. Wet pasture a few hundred yards 

 above Alverstone mill, plentifully ; and in Alverstone lynch. [The bog by Burnt- 

 house, Dr. Bell-Sailer, Edrs.] 



W. Med. — lu the wet thicket by the stream-side between Newbridge and Cal- 

 bourne, sparingly. Abundantly on moory meadows between West Court and 

 Sandy Way, Shorwell. About Freshwater, on Schoolhouse farm and near Tlior- 

 ley. On the boggy part of Colwell heath. Wet pasture on Kingston moors. 

 In the marsh near Comptou, and marsh near Easton in great abundance, B. T. W. 

 Boggy meadows by the Medina near its source. 



Villarsia nymphceoides, Vent., grows in a pool on Barrett's common, 2^ miles 

 from Byde, — Collins, Esq., July, 1846. Certainly introduced, Dr. Bell-Salter 

 thinks probably by himself, though he has no recollection of having done so with 

 this particular species. 



Order LI. CONVOLVULACEiE, Juss. 



" Calyx of 4 — 5 sepals, permanent, imbricated, often verj"^ une- 

 qual. Corolla regular, deciduous ; the limh plaited, 4 — 5 lobed. 

 Stamens 4 — 5 from the base of the corolla. Ovary with 2 — 4 

 cells, seldom 1, sometimes in 2 or 4 divisions, few-ovuled, ovules 

 solitary in each cell or collateral. Style 1, often divided, rarely 2. 

 Disk annular, hypogynous or wanting. Capsule 1 — 4 celled, the 

 valves fitting at their edges to the angles of a loose dissepiment, 

 bearing the seeds at the base, or bursting transversely. Albumen 

 in small quantity, mucilaginous. Embryo curved. Cotyledons 

 plaited. — Herbs or shrubs, generally climbing, milky and purga- 

 tive." — Br Fl. 



I. Convolvulus, Linn. Bindweed. 



Calyx 5-sepaled. Corolla campanulate, plicate. Stigmas 2. 

 Capsule of 1 — 3 — 4 cells, with as many valves. Cells 1 — 2 

 seeded."— Br. Fl. 



* Brads small, remote from the flower. 



1. C. arvensis, L. Small Bindweed. " Stem prostrate twining 

 or scandent, leaves usually oblong or hastate sagittate pointed or 

 obtuse, the lobes mostly acute, peduncles 1- or 2-flowered, bracts 

 small distant from the flowers."— Br. Fl. p. 271. E. B. t. 312. 



