1554 CXXVII. OECHIDE^. [Surcochihis. 



almost the aspect of leaves. Scapes slender, erect, almost filiform, 3 to Gin. high^ 

 bearing several small flowers on very short filiform pedicels. Sepa,ls and petals 

 obovate or obovate-oblong, about 2 lines long, the lateral sepals as in S. falcattis 

 adnate to the base only of the columnar projection, which forms a linear claw to 

 the labellum almost half as long as the sepals. Labellum sessile at the end of 

 this projection or claw, the lateral lobes small, narrow-oblong, clavate, purple ; 

 the middle lobe very short and obtuse, almost globular and densely white-woolly 

 on the inner surface as in S. Cecilim and S. Hillii ; the dorsal protuberance very 

 short. — Thrixspcrmum phyllorhizum , Eeichb. f. Beitr. 71. 



Hab.: Cape York, W Gillivray , Daemel ; Fitzroy Island, F. v. Mueller; Johnstone Eiver,. 

 Br. T. L. Bancroft ; Hammond Island, Bail, 



20. CLEISOSTOMA, Blume. 



(From Idcio, to close, and stoma, a mouth ; mouth of the spur closed.) 



Sepals and petals nearly equal, free, spreading, the lateral sepals sometimes- 

 adnate to a basal projection of the column. Labellum inserted at the base of the 

 column or of its basal projection but free from it, with a pouch or spur at its 

 base, undivided inside but with a reflexed or horizontal scale or appendage inside- 

 at the orifice, the lamina 3-lobed, the middle lobe usually short and broad, the- 

 lateral ones falcate or narrow. Column short, with 2 teeth or lobes at the apex 

 in front. Anther lid-like ; pollen-masses 4 in pairs, attached to a somewhat- 

 flattened caudicle. — Herbs with the habit of Sarcochilus or of Sacrolahium, the- 

 stems short or elongated. Leaves more or less distichous, leaving short sheathing 

 persistent bases. Flowers small, in axillary racemes, the spur of the labellum 

 rather long in the Australian species. 



The genus extends over East India and the Archipelago ; the Australian species are endemic- 

 Leaves 2 to 3in. long, linear-oblong. Eacemes slender, often shorter than 

 the leaves. Sepals about 2 lines long. Labellum middle-lobe very 



short, obtuse, fleshy, concave . 1. C tridentatum- 



Leaves 1 to l^in. long, lanceolate. Eacemes rather longer than the 

 leaves. Sepals scarcely 1 line long. Labellum middle-lobe roundish 



with infiexed margins 2. C Armitli. 



Leaves 1 to 2in. long, linear-lanceolate. Eacemes spike-like, often longer 

 than the leaves. Sepals 1 line long. Labellum middle-lobe saccate, with a 



membranous scale in front 3. C Nugenti. 



Leaves IJin. long, linear-oblong. Eacemes shorter than the leaves. 

 Sepals 3 lines long. Labellum densely -woolly, middle-lobe minute, 



truncate 4. C. congestum. 



Leaves 2 to Sin. long, ovate to linear-lanceolate. Eacemes 8 to 4in. long. 



Sepals 2 lines long. Labellum middle-lobe almost conical 5. C. hrevilahre. 



Leaves 4 to 6in. long, broad linear-oblong. Spike rigid, shorter than 



the leaves. Sepals 2^ lines long. Labellum middle-lobe orbicular . . 6. C Maepliersonii, 

 Leaves 4 to Gin. long, lin. broad, apex obtuse. Eacemes 6 to 9in. long. 

 Sepals about 4 lines long. Labellum middle lobe short, appendage within 

 the pouch horn-like 7. C. Keffordii. 



1. C. tridentatum (3-toothed), Lindl. Bot. Bey. 1838, Mhc. 38; Benth. FL 

 Aiistr. vi. 296. Stems often elongated, rather slender, the persistent bases of the- 

 leaves much less prominent than in the SarcochiU. Leaves mostly 2 to Sin. long,, 

 linear-oblong or falcate. Racemes slender, flexuose, shorter than the leaves. 

 Bracts very small. Flowers very small, shortly pedicellate. Sepals and petals 

 oblong-lanceolate, about 2 lines long, the dorsal sepal rather broader, the 

 lateral ones and the petals slightly falcate, the lateral sepals adnate to the 

 very short basal projection of the column. Labellum nearly as long as the 

 sepals ; spur rather long, deflexed, with a deflexed ciliate membrane inside, on 

 the sid.e next the lamina of the labellum ; lateral lobes spreading, falcate and 

 acute; middle lobe very short, obtuse, fleshy, concave. Column exceedingly 

 short, the margin deeply membranous, with 2 anterior narrow teeth. Capsule 



