18 FLORA OF TASMANIA. [ Orchidee. 
than any other part of the flower, broadly dilated, petaloid, dark red-brown, with a terminal, greenish anther. 
(Named in honour of G. Caley, a diligent explorer of New South Wales botany.) 
1. Caleana major (Br. Prodr. 329) ; folio angusto lineari v. lanceolato plano, scapo medio 1-brac- 
teato, limbo labelli levi semiovato apice angustato basi appendice curva instructo. — Endl. Nov. Gen. 
t. 1598; Lindl. Gen. et Sp. Orchid. 429. (Gunn, 946.) (Tas. CVII. A.) 
Has. Sandy soil: Rocky Cape, Guan; Cheshunt, Archer ; Hobart and Huon River, Oldfield.— (Fl. 
Dee.) 
Disrrıs. New South Wales and Victoria. 
PraTE CVII 4. Fig. 1, flower; 2, lateral, and 3, dorsal sepal :—all magnified. 
Gen. IX. PTEROSTYLIS, Br. 
Perianthium ringens.  Sepalum posticum cum petalis in galeam connatis v. conniventibus; lateralia 
connata, deflexa v. erecta. Labellum unguiculatum, inclusum v. exclusum et dependens, limbo angusto basi 
appendiculato, ungue sepalis adnato. Columna elongata, arcuata, semiteres, apice auriculis petaloideis alata. 
Anthera terminalis, persistens, loculis approximatis. Pollinia 4, compressa.—Herbæ pleregue membra- 
nacez, foliose v. aphylle ; radicibus e caudicibus elongatis, apice tuberiferis; caulibus v. scapis l- pauci- v. 
plurifloris; floribus parvis v. magnis, pallide viridibus, labello sepe irritabili. 
A large and very peculiar and well-marked genus, common in extratropical Australia and New Zealand, but 
not hitherto detected elsewhere. About 35 species are known to me, of which 28 are Australian, and half of the 
latter are Tasmanian ; they present very different forms, but all agree in being pale green herbaceous plants, with 
underground tubers terminating long caulicles.—Zeaves generally rosulate and radical, more rarely linear and alter- 
nate on the stem, rarely none, or reduced to sheathing scales; in some species the leaves appear only after the 
flowers; in others again they are borne on separate stems, springing from the base of the flowering scape. Flowers 
solitary, or numerous and spiked, large or small. Upper sepal and petals together forming a very convex upper lip 
or galea; lower sepals connate, ascending and closing the flower, or hanging downwards. Labellum often irritable, 
usually small, linear, clawed, the limb narrow, with an appendage at the base, in some species fringed with long 
hairs. Column slender, winged near the apex. (Name from mTepov, a wing, and oruhos, a column.) 
$ 1. Radical leaves spreading. Scape one-flowered, with one or more sheathing bracts, or leafy. Lower lp 
of perianth ascending. Labellum glabrous. 
l. Pterostylis curta (Br. Prodr. 927); folis radicalibus stellatis oblongo-ovatis obtusis breve 
petiolatis, scapo gracili 1-3-bracteato, flore solitario erecto magno, labio inferiore galea obtusiuscula bre- 
viore, labelli inclusi lamina integra obtusa, appendice bifida penicillata.—Guill. Ic. Lith. 1.2; Hook. Bot. 
Mag. t. 3086; Lindt. Gen. et Sp. Orchid. 390. (Gunn, 600.) 
Has. Common in shady places.—(Fl. Oct.) (v. v.) 
Distri. New South Wales and Victoria. 
A graceful species.— Zeaves all radical, spreading, membranous, 1-2 inches long. Scape with one to three 
membranous, erect, distant, sheathing bracts. Flowers erect, about 1 inch long. Lower lip shorter than the galea. 
Wings of the column produced above into short, subulate points, and below into long, straight auricles. 
2. Pterostylis nutans (Br. Prodr. 327 ); foliis radicalibus stellatis petiolatis ovatis oblongisve 
subacutis, scapo gracili 1-2-bracteato, flore Solitario horizontali v. nutante, labio inferiore galeam apice 
apice attenuato truncato, appendice bifida penicil- 
lata.— Bot, Mag. t. 3085; Lindi. l c. 391. (Gunn, 604.) 
