Utricularia] DIANDFxIA — MONOGYNIA. 9 



the Rose Haugb propert}-, Ross-shire, Rev. G. Gordon. FL June. 

 If-' — Leaves and Jlowers about the size of P. Lusitanica ; but the 

 texture of the foliage most resembles that of P. vulgaris. Corolla 

 yellowish, within on the under-side is a tuft of deep 3'ellovv, crystalline 

 hairs. Spur remarkably short and conical, curved towards the lower 

 lip of the corolla. 



4. P. Lusitanica, L. (^pale Butlerwort) ; spur cylindrical obtuse 

 decurved shorter than the almost equal limb of the corolla, 

 leaves veiny and as well as the scape hairy. E. Bat. t. 145. 



Marshy places and wet moors, mostly confined to the west side of 

 the kingdom : never, I believe, found on the east side, and rarely in 

 the interior. Plentiful in the Hebrides and Ireland : but most abundant 

 in the extreme north of Scotland, near Cape Wrath, growing among Jun- 

 germannia cochleariforinis and Arbutus alpina. Fl. June, July. If-. 



4. Utricularia. Linn. Bladderwort.'- 



1. U. vulgaris, L. {greater Bladder ivort) ; spur conical, upper 

 lip as long as the projecting palate, leaves plnnato-mullifid. E. 

 Bot. t.253. 



Ditches and deep pools, not unfrequent. FI. June, July. !(. . — Roots 

 much branched. Shoots or runners floating horizontally in the water, 

 clothed with capillary multifid leaves, bristly at the margin and bearing 

 little crested bladders. Scape erect, 4 — G inches high, with 6 — 8 bright 

 ■y eWow Jioicers in a raceme. Lower lip convex, much larger and broader 

 than the upper one, and having a projecting palate closing the mouth. 

 Spur short, deflexed. Filaments curved, thick, resembling those of 

 Pinguicula. Stigma large. 



2. U. intermedia, Hayne, {intermediate Bladderwort^ ; spur 

 conical, upper lip twice as long as the palate, leaves tripartite, 

 their segments linear dicbotomous. E. Bot. t. 2489. 



Ditches and deep pools, much less frequent than the preceding. 

 About Dublin and Bantry in Ireland, and in Rescobie Lake, Forfar ; 

 also near Elgin. Fl. June, July. 14.. — This has probably been passed 

 by as the U. vulgaris : but its Jioicers are smaller, of a paler yellow, 

 and have a longer lip. The stems are more leafy, and the bladders 

 arise from branched stalks, not from the leaves. It propagates itself by 

 buds or gemmas which proceed from the ends of the shoots, as does U. 

 minor, and perhaps U. vulgaris. 



3. U. minor, L. {lesser Bludderwort) ; spur extremely sbort 

 obtuse keeled, upper lip as long as the palate, leaves subtrlpar- 

 tite, the segments linear dicbotomous. E. Bot. t. 254. 



' The British species of this genus are all aquatics : and their roots, stems 

 and even leaves are furnished with nunnerous, membranaceous, reticulated 

 vesicles, which, according to Hayne, are filled with water, till it is necessary 

 the plant should rise to the surface and expand its blossoms above that fluid. 

 The vesicles are then found to contain only air, by aid of which the plant 

 floats : this air again in autumn gives place to water, and the i>lant descends 

 to ripen its seeds at the bottom. Mv Wilson observes, on the bladders of 

 ZT. vulgaris, that " they have an orijice closed by an elastic valve, opening in- 

 wards, and of much thinner texture than the bladder, to which it is attached, 

 where the crest is placed. Aquatic insects often enter these bladders, and are, 

 of course, confined there." 



