16 FLORA OF TASMANIA. [ Orchidee. 
Anthera 1-locularis, semibivalvis, persistens. Pollinia A. Herber perpusille, glabra; folio unico rotun- 
dato, integro v. lobato ; flore solitario, maximo, subsessili, luride rufo v. purpureo. 
A very singular genus, consisting of about six Australian and one Javan plant; all are small herbs, growing 
in very shaded, damp woods, and have slender roots, with one or two small, pedicelled tubers, very short stems, a 
rounded, very membranous leaf, and large, solitary, dingy rufous-coloured, sessile flower, quite unlike that of any 
other Orchideous plant; that of the Tasmanian species resembles a snail.— Sepa/s unequal, the upper large and 
hooded, the lateral very small and narrow, and, as well as the small petals, hidden under the large upper sepal. 
Lip large, tubular or saccate, sometimes spurred; that of the Tasmanian species is spurless, hooded, with toothed 
or fimbriated margins. (Name from kopvs, a helmet, and avos, a lower.) 
l. Corysanthes fimbriata (Br. Prodr. 328, et in App. Flinders’ Voy. cum ic.); folio rotundato- 
cordato v. oblongo, flore sessili, labello ecalcarato supra dilatato disco glanduloso marginibus dentatis fim- 
briatisve, sepalo dorsali unguiculato incurvo.—C. fimbriata ef C. Diemenica, Zind/. Gen. et Sp. Orchid. 393. 
(Gunn, 614.) (Tas. CVIL B.) 
Has. Common upon shaded, mossy banks, and in moist, sandy places, in various parts of the Island. 
—(Fl. July-Sept.) (v. v.) 
ISTRIB. New South Wales and Victoria. 
Lindley distinguished this doubtfully as a different species from C. fimbriata, from its having larger flowers 
and less fimbriated margins to the labellum ; but I find both the flowers and leaves to be extremely variable in ab- 
solute and relative size. The flowers are sometimes nearly white, and vary from 4-3 inch long.—PraTE CVII. B. 
Fig. 1, dorsal sepal; 2, column and petals; 3, front view of column; 4, portion of labellum ; 5, front, 6, back, 
and 7, side views of pollen :—a/J magnified. 
Gen. VI. LYPERANTHUS, Br. 
Perianthium carnosulum, papillosum, ringens, extus eglandulosum. Sepalum posticum fornicatum ; 
lateralia et petala angusta, planiuscula, subequalia. Zabellum breve, semicucullatum, ascendens, recurvum, 
vaginato ; floribus racemosis, fuscis v. luride atro-purpureis. 
There are about six known species of this genus, of which four are Australian, and of the others, one inhabits 
New Caledonia, and the other Lord Auckland’s Group, south of New Zealand. Z. nigricans, the only Tasmanian 
species, is rather common in Australia, extending from Sydney to Swan River, but is very rare in Tasmania; it 
is a stout, herbaceous plant, 4-7 inches high, with dark, red-purple flowers. Root of very stout, often woolly 
fibres, springing from the base of the stem, of which one, stouter and longer than the rest, terminates in an oval, 
undivided tuber. Leaves very thick and fleshy, the lowest largest, ovate or circular, the upper gradually passing 
into sheathing bracts, which loosely clothe the scapes. Flowers three to five, racemose, about 1 inch long, almost 
concealed in the large, elliptical, concave bracts. Upper sepals galeate, lanceolate, acute; lateral sepals about equal 
in length, linear, curving downwards. Petals ascending. Lip blunt, with a revolute apex, glandular disc, and 
crisped margins. (Name from Avirnpos, mournful, and avbos, a flower ; in allusion to the aspect of the flowers.) 
l. Lyperanthus nigricans (Br. Prodr. 925); folio radicali cordato-rotundato y. ovato-oblongo, 
caulis vaginis bracteisque cymbiformibus, labelli apice revoluto disco papilloso marginibus und 
Haz. Forest near Georgetown, Archer.—(Fl. Dec.) 
Disrris. New South Wales, Victoria, and Swan River. 
Puare CVI. B. Fig. 1, flower, magnified. 
