CYPEUACEiE. 1G9 



Stems 1 to 3 feet high, with very bhmt angles. Leaves sheathing 

 the base of the stem, the slieaths with their apices all reaching the 

 same height on the stem, so that the laminaj all start from the same 

 height ; lamina j'o to J inch broad, very deeply channelled. Terminal 

 male spike 1 to 2 inches long. Lowest female spike 1 j- to 3 inches 

 long. Fruit I; inch long. 



A well marked species, which cannot be confounded with any of the 

 foregoing species. 



Bottle Sedge. 



French, Carex ampmiM. German, GescJinahelle Segge. 



SPECIES (?) LXIV.— CAR EX INVOLUTA. r>ah. 



Plate MDCLXXXI. 



C. vesicaria, var. involnta, Bab. Man. Brit. Bot. ed. vi. p. 392. 



C. ampuUacoa, var.. Baler & Hunt, in Report of Bot. Exchange Chib for 1863, p. 9. 



Rootstock extensively creeping, with elongate branches producing 

 tufts of stems and barren shoots at the apex and short stolons. Stem 

 erect, leafy only at the base, slender, somewhat wiry-, bluntly triangular, 

 rough below the lowest spike. Leaves as long as or longer than the 

 stem, narrowly linear, channelled, not keeled, rough on the margins 

 towards the apex, glaucous and faintly ribbed above, bright green 

 beneath. Male spikes 2, rarely 1 or 3, the upper one longly stalked, 

 linear-cylindrical, very acute, with lanceolate subobtuse reddish-brown 

 or orange-brown glumes with rather broad scarious margins. Female 

 spikes 1 or 2, rarely 3, rather remote, the lowest one rather shortly 

 stalked, the upper shortly stalked, at first erect, afterwards slightly 

 drooping, cylindrical, slightly tapering towai'ds each end, subacute, 

 rather dense, very many-flowered. Bracts not sheathing, foliaceous, 

 the lowest one ^vith a long foliaceous lamina exceeding the male spike. 

 Glumes of the female flowers very narrowly lanceolate, subacute or 

 sliortly mucronate, purplish-brown, with narrow gi'een midri])s and pale 

 scarious margins, shorter and much narrower than the fruit. Fruit 

 ultimately spreading-ascending, stipitate, elliptical-ovate, gradually 

 acuminate, conico-ovoid, scarcely trigonous, greatly inflated and 

 bladderlike, very faintly ribbed, with the marginal ribs stronger than 

 tlie others, glabrous, shining, pale greenish-yellow, sometimes tinged 

 with brown, gradually narrowed into a rather short straight smooth 

 2 toothed beak about one-third the length of the rest of the fruit. 

 Xut pale yellow, roundish-obovate, trigono-trigonous, very loosely 

 covered by the perigy-nium. 



In bogs. Very local. Not known to occur except in Cheahiro, 

 vol.. X. z 



