Chiloyluttis.] CXX.VII. ORCHIDE^. 1587 



1. C. diphylla (2-leaved), 7?. Er. Prod. 323; Benth. Fl. Atistr. vi. 390. 

 Eadical leaves 2, from ovate-elliptical to oblong-lanceolate, usually acute, f to 

 l^in. long, contracted into a petiole of 2 to 3 lines. Scape from 3 to 6in. high, 

 hearing occasionally a single sheathing bract near the base besides the one 

 subtending the terminal pedicel. Dorsal sepal cuneate, 5 to 6 lines long, shortly 

 acuminate and much contracted in the lower half ; lateral sepals linear-terete, 

 spreading or reflexed, very slender or somewhat thickened in the upper half, as 

 long as or longer than the dorsal one ; petals lanceolate, attached by a broad 

 base, acute, rather shorter than the sepals. Labellum more or less obovate, 

 obtuse or acute, contracted at the base into a distinct long or short claw ; calli 

 covering the disk, mostly shortly linear, but some larger and thicker ones 

 arranged more or less in 2 rows, and 1 or 2 at the base of the lamina, much 

 longer rather thick and reflexed, all however very variable as to form and 

 numbers. Column about as long as the petals. — Bauer, 111. PI. N. Holl. t. 8 ; 

 Lindl. Gen. and Sp. Orch. 386 ; Hook. f. Fl. Tasm. ii. 23 ; Eeichb. f. Beitr. 27 ; 

 Caladenia diphylla, Eeichb. f. Beitr. 67 ; Epipaotis reflexa, Labill, PI. Nov. Holl. 

 ii. 60, t. 211, f. 1 : Acianthus ? bifulius, R. Br. Prod. 322 ; Eeichb. f. Beitr. 26 ; 

 Fitzg. Austr. Orch. ii. Pt. 2. 



Hab.: Brisbane River, Moreton Bay, F. v. Mueller; and other southern localities. 



2. C. trilabra (3-lipped), Fitzij. in Brit. Joum. Bot, xxi. 301. Leaves 2, 

 sessile, oblong-lanceolate, acute, about 10 lines long, 4 lines broad. Scape about 

 Sin. high, with 1 large sheathing acute bract below the ovary. Dorsal sepal 

 spathulate, acuminate, about 7 lines long, light red-brown tinged with green. 

 Lateral sepals linear, about 7 lines long, acute, yellowish. Labellum light red- 

 brown, about 5 lines long, obovate, acute, on a broad claw ; 1 large greenish 

 reflexed callus near the base and about 9 or 10 other large, flat, dark red-brown 

 calli along the centre of the disk, surrounded by numerous small clavate slender 

 calli. Petals similar to the labellum, but not quite so broad and with hardly so 

 fully developed calli. Column shorter than the petals, but slightly winged, the 

 wings extending behind the anther into a deeply 4-toothed crest. Anther with a 

 short point. — Fitzg. Austr. Orch. ii. Pt. 2. 



Hab.: Given as a Queensland plant in Muell. 2nd. Syst. Cens. Austr. PI. l'J2. 



46. POGONIA, Juss. 



(Alluding to the bearded lip.) 



Petals and sepals free, erect connivent or somewhat open, equal or the petals 

 smaller. Labellum erect, concave, undivided or lobed, the disk crested papillose 

 or bearded. Column elongated, semiterete, usually angular or winged upwards. 

 Anther lid-like, incumbent, sessile or shortly stipitate. Pollen granular, cohering 

 in 2 entire or 2-lobed masses, free or attached to the rostellum by an elastic web. 

 — Terrestrial herbs, forming a spherical tuber under ground. Flowering stems 

 or scapes in the Australian section leafless besides scarious sheathing scales, 

 erect, bearing a raceme (usually one-sided) of pendulous pedicellate flowers, 

 sometimes reduced to a single flower, usually red. Leaves developed later than 

 the flowers, solitary on separate stems, those of the Australian species not as yet 

 observed. 



The genus is a widely-spread one, having been originally founded on North American species. 

 The section Nervilia, to vrhieh the Australian species belong, characterized by the separate 

 development of the solitary leaf and of the flowering stems, is spread over tropical Asia and the 

 Masoarene islands as well as those of the Archipelago. 



Plowers solitary on the scape, 6 to 7 lines long. Labellum 3-lobed, the 



middle lobe contracted at the base, the disk papillose 1. P. unifiora. 



Flowers 2 to 6 in the raceme, 7 to 8 lines long. Labellum shortly 3- 

 lobed, the middle lobe broad at the base, the disk bearded .... 2. P. holochila. 



