te rm in a than any other part of the flower, broadly dilated, petaloid, dark red-brown, with l, gi-eenisli a n th e r
(Named iu honour of O. Caley, a diligent explorer of New South Wales botany.)
1. Caleana major (Br. Prodr. 329) ; folio angusto lineari v. lanceolato piano, scapo medio 1-brac
teato, limbo labelli lævi semiovato apice angustato basi appendice curva instructo. — Endl. Nov. Oen
t. 1598; Lindl. Gen. et Sp. Orchid. 429. (Gunn, 946.) (T a b . CYII. A.)
H a b . Sandy soil: Rocky Capo, Gunn; Cheshunt, Archer ; Hobart and Huon River, Oldfield.— (PI.
Dec.)
D i s ’Hu b . New South Wales and Victoria.
P l a t e CVII. A. Fig. 1, flower; 2, lateral, and 3, dorsal sepal :—all magnified.
Gen. IX. PTERO SÏTLIS, Br.
Perianthium ringens. Sepalum- posticum cum petalis in galeam connatis v. conniventibus ; lateralia
connata, deflexa v. erecta. Lahellum unguiculatum, inclusum v. exclusum et dependens, limbo angusto basi
appendieulato, ungue sepalis adnato. Columna elongata, arcuata, semiteres, apice auriculis petaloideis alata.
Anthera terminalis, persistens, loculis approximatis. Pollinia 4, compressa.— Herbæ pleraque membranacea,
foliosa V. aphylla ; radieibus e caudicibus elongatis, apice tuberiferis ; caulibus v. scapis 1- pauci- v.
plurifions ; floribus parvis v. magnis, pallide viridibus, labello sape irrìtabili.
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 knorni 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 lierbaceous plants, witli
undergi-ound tubers terminating long caulicles.—Leaves generally rosulate and radical, more rarely linear and alternate
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 smnU. 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 nan-ow, with an appendage at the base, in some species fringed with long
liairs. Column slender, winged near the apex. (Name fi'om rmpw, a wing, and «rraXos, a column.)
§ 1. Radical leaves spreading. Scape one-flowered, with one or more sheathing bracts, or leafy. Lower lip
of perianth ascending. iMlellum glabrous.
1. P te r o sty lis curta (Br, Prodr. 3 2 7 ); foliis 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, aiipendice bifida penicillata.— Guill. Ic. Lith. t. 2 ; Hook Bot.
Mag. f. 3086 ; Lindl. Gen. et Sp. Orchid. 390. [Gunn, 600.)
H a b . Common in shady places.— (PI. Oct.) [v. v.)
D i s t e ib . New South Wales and Victoria.
A graceful species.—Leaves 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 Up shorter than the galea.
Wings of the column produced above into short, subulate points, and below into long, straight amides.
2. P te r o s ty lis nutans (Br. Prodr. 327) ; foliis radicalibus stellatis petiolatis ovatis oblongisve
subacutis, scapo gi'acili 1- 2 -bracteato, flore solitario horizontali v. natante, labio inferiore galeam apice
decurvam æquante, labelli incinsi limbo piloso v. glabro apice attenuato truncato, appendice bifida penicillata.—
Bot. Mag. t. 3085 ; Lindl. I. c. 391. (Gunn, 604.)
Hab. Common in shaded places, in a poor soil.— (PI. Sept.-Nov.) (v. v.)
D i s t r ib . New South Wales.
Similar in general characters to P. curia, hut readily distinguished by the horizontal or nodding flowers, by
tlie lips of the perianth being equal in length, and by the apex of the galea being suddenly tunied downwards.
Wings of column produced upwards into slender, filiform appendages, broadly auricled below, and dilated.
3. P te r o s ty lis pedunculata (Br. Prodr. 327) ; foliis radicalibus snbstcllatis ovato-oblongis lan-
ceolatisve subacutis obtusisve, scapo laxe 1- 2 -braeteato, flore erecto, labii inferioris laciniis capillaribus
galeam apice repente iucurvam superantibus, dente intermedio incurvo interjecto, labello incluso columna
breviore, lamina subacuta, appendice bifida penicillata.—Lindl. I.e . 391. (Gunn, 629.) (Tab. CXIV. A.)
Hab. Abundant iu shady places.— (PI. Sept.-Nov.) (r. r.)
A smaller species than either of the preceding.—Leaves 1-2 inches long, sessile or petioled, erect or spreading.
Scape slender. Flowers erect, I inch long. Lower lip with two long, slender, filiform ams, much longer than the
suddenly inflcxed galea. Wings of the column produced upwards into slender, filiform appendages, and downwards
into falcate aui-icles,—P l a t e CXIV. A. Fig, 1, labellum ; 2, side, and 3, front view of column :—all magnified.
4. P te r o s ty lis nana (Br. Prodr. 327) ; foliis radicalibus stellatis longe petiolatis ovatis obtusis acu-
minatisve, scapo puberulo 2-bracteato, bracteis distantibus subfoliaceis, flore erecto, labii inferioris laciniis
filiformibus gale<am acuminatam subæquantibus, labelli lanceolati appendice bifida subpeuicillata.—Lindl.
I. c. 391. (Gunn, 902.) (Tab. CXIV. if.)
H a b . Dry soil; not uncommon in several parts of the Colony : Woolnorth, Circular Head, Gunn;
Bagdad, Miss Forstes-.— (FI. Oct.) (v. v.)
D i s t e ib . Victoria, Robertson.
Very similar to P . pedunculata, but much smaller, with petiolate, ovate, acute, or even acuminate leaves,
smaller, less foliaceous, lanceolate bracts ; a pubescent scape, and smaller flower.—Leaves rather numerous, ^ -1 inch
long, including the long petiole. Flower erect, -|-1 inch long. Wings of column produced upwards aud downwarils
into subulate points.—P la t e CXIV. B. Fig. 1, labellum ; 2, side, and 3, front view of column ;—all magnified.
5. P te r o s ty lis obtusa (Br. Prodr. 327) ; foliis radicalibus (in planta florida nullis) stellatis breve
petiolatis ovato-oblongis obtusis, scapo 2-3-bracteato, bracteis subfoliaceis, flore majusculo erecto, labii in-
ferioris laciniis longe filiformibus, galeæ arcuato-incurvæ sepalo dorsali longe aeuminato caudato petalos
acuminates superante, labelli lamina lanceolata, appendice bifida appendiculata.—Lindl. I.e. 389. (Gunn,
357.) (Tab. CXV. C)
Hab. Poor soil; common in the northern parts of the Colony; Circular Head, Gunn; Port Sorrell,
Cheshunt, aud tiie Mersey, Archer.—(FI. Nov., Dec.)
A handsome, rather large species, a span to 7 inches high.—Root of two collateral tubers, of which one bears
four or five petioled, ovate-oblong leaves, and the other, a bi- or tri-bracteate, slender scape. Brads inch
long, loose, rather foliaceous, with long, acuminate points. Flower erect, inch long. Galea arched, curving
downward from above the middle ; dorsal sepal, with a very long, caudate apex, longer than the petals. Lotcer lip
with very slender, erect, filiform laciiiiæ. Labellum very narrow, its apex exserted, irritable, as in most of the
species. Wing of column produced into a short, subulate point above, and long oblong auilcle below.—P late
CXV. C. Fig. 1, column and labellum; 2, labellum; 3, front view of column:—all magnified.
6 . P te r o sty lis cu cu llata (Br. Prodr. 327) ; foliis radicalibus amplis stellatis oblongis oblongo-
lanceolatisve acutis, bracteis 1 - 2 magnis foliaceis late vaginautibus cymbiformibus cucullatis membrauaceis,
flore magno erecto, labii inferioris laciniis subulatis galeam lente curvam æquantibus, labello integro obtu