Orchidee.] FLORA OF TASMANIA. 17 
Gen. VII. BURNETTIA, Lindi. 
Perianthium suberectum. Sepalum supremum ovato-lanceolatum, subgaleatum ; lateralia lineari-oblonga, 
marginibus involutis. Petala linearia, sepalis equilonga, marginibus involutis. Zadellum parvum, sessile, 
ascendens, cuneatum, marginibus involutis, disco glanduloso basi callo instructo. Columna membranacea, 
marginibus basi utrinque productis. Anthera persistens, terminalis, 2-locularis, apiculata. Stigma ovatum. 
— Herba pusilla, erecta, robusta, 2-3 -foliata ; foliis vaginaformibus ; floribus 2-3, pro planta magnis, erectis. 
A very singular and rare plant, the only one of its genus hitherto discovered. Lindley, who first described it, 
has placed it in Neottiee, but the relative positions of the anther and stigma on the column appear to me the same 
as in Lyperanthus and its allies, with which it further agrees in the structure of the lip and its appendages.—A very 
small, herbaceous, greenish plant, about 3-4 inches high, with two to three distant, leafy bracts on the stem, and 
two to three large, erect flowers, nearly 4 inch long. Ovary clavate, longer than the acuminate flower-bracts, as 
long as the perianth. Sepals nearly equal, oblong-lanceolate, subacute; dorsal concave; lateral with involute mar- 
gins. Petals as long as, but narrower than, the sepals, with involute margins. .Labellum short, ascending, broadly 
euneate, with a truncate, erose apex, its margins rolled in; disc with two thickened ridges, terminating in a conical 
callus near the base, and in some scattered, small, clavate glands towards the apex; a few papille are also scat- 
tered over the surface of the labellum, whose under surface is granular towards the apex. Column with broad, 
membranous margins. Anther terminal, two-celled, acuminate. Stigma a rather prominent, hollow, ovate, de- 
pressed body, below and in front of the very base of the anther. (Named in honour of the late G. T. Burnett, 
a Professor of Botany in London.) 
1. Burnettia cuneata (Lindl. Gen. et Sp. Orchid. 517). (Gunn, 947.) (Tas. CVII. C.) | 
Has. Very rare. Sandy soil: at the foot of Rocky Cape, Gunn; Port Arthur, Backhouse (fide Gunn). 
— (Fl. Dec.) 
Prate CVII. C. Fig. 1, flower; 2, labellum; 3, column and labellum; 4, front view of column :—all mag- 
nified. 
Gen. VIII. CALEANA, Br. 
Perianthium subbilabiatum. Sepala et petala subeegualia, linearia. Labellum posticum, unguiculatum, 
limbo peltato cavo, foramine exteriore. Columna maxima, petaloidea, concava. Anthera terminalis, per- 
sistens, loculis approximatis. Pollinia 4.—Herbe graciles, glabra, l- v. paueiflor@ ; radicibus fibrosis, 
tuberiferis ; folio radicali solitario, basi vaginato ; floribus fusco-viridibus, labello columnague rufis ; labello 
mobili, reflexo, instante pluvio v. irritatione inflexo, columna incumbente. 
The species of this genus, of which only three are known, are remarkable for the irritability of the lip; this 
is posticous, has a long, narrow pedicel, and stands erect, as it were, over the flower, but when the plant is shaken, 
or rain comes on, it suddenly shuts down, like a lid, on the flower, and its lamina becomes closely applied to the 
large petaloid column. A Swan River species is said thus to catch insects, whose struggles appear to disengage the 
pollen from the anther, and apply it to the stigma.—Slender, herbaceous plants, with a solitary, narrow, radical 
leaf, and tall scape, bearing one or very few, rather large, deep red-brown flowers. The Tasmanian C. major is a 
span to 8 inches tall, with a leaf varying from narrow-linear to broadly lanceolate, a scape with one small, sheathing 
bract, and about two flowers, 2-14 inch long. Flowers pedicelled, with a small bract at the base of the pedicel, 
reversed, the labellum being above. Sepals three, narrow-linear, one hanging down behind the column, and the 
two lateral pointing backwards, nearly horizontally, notched at the margin. Petals about as long as the column, 
linear, placed against its sides, pointing downwards and forwards. Labellum with a long, slender peduncle, the 
lamina produced into a narrow point at the apex, and at the base into a subulate appendage. Column much larger 
VOL. II. F 
