1522 CXXVII. OECHIDEiE. [Deiidrobium. 



Stems stout. Leaves broad emarginate. Petals about IJin. long, 

 obtuse-cuneate, sometimes curled. Labellum middle-lobe small, 

 obtuse, emarginate, margins undulate . . . ., 4. D. Toffli. 



Stems somewhat stout. Leaves broadly lanceolate. Petals linear- 

 oblong, IJin. long, much undulate. Labellum middle-lobe small, 

 broadly-lanceolate or oblong . . . . . • 5. D. undulatum. 



Stems more or less fusiform. Leaves narrow thick, 4. to 6in. long, 

 acuminate. Petals twisted, narrower but similar to the sepals. 

 Labellum middle-lobe triangular, acute . . , 6. J5. Johannis. 



Stems thick, nearly straifjht or curved, of nearly even thickness. 

 Leaves flat, broac', thick coriaceous. Peta's and sepals equal, 

 some exceeding lin. long. Labellum middle-lobe broad as long . 7. D. sjieciosum. 



Stems fusiform, about Itt. long. Leaves oblong acuminate, thin 

 coriaceous. Petals and sepals equal, 8 to 10 lines long, 2 to 2| lines 

 broad, the petals narrower. Labellum middle-lobe truncate and 

 very short . . .... 8. D. fiisifonne. 



Stems slender, with a bulbiform base. Leaves 3 to 5in. long, J to 



IJin broad, emarginate, subcoriaceous. Petals 6 to 8 lines long, ' ' ■ 



narrow. Labellum middle-lobe apiculale 9. D. delicatiim. 



Stems slender in the lower half, prominently 4-anguIar above. 

 Leaves few, broadly lanceolate, subcoriaceous about 4in. long. 

 Petals much shorter than the sepals, llnear-fiUform, slightly 

 dilated at base. Labellum middle-lobe rather large and almost 

 rhomboid 10. D. tetragomim. 



Stems short terete, thin, erect. Leaves ovate-oblong, few. Petals 

 and sepals narrow-lim ar, about lin. long. Labellum middle- 

 lobe undulate, recurved 11. D. amnliim. 



Stems 3 to Tin. high, terete or furrowed about 5 lines diameter 

 at top. Leaves linear-lanceolate 2in. long. Petals about 4 lines. 

 Labellum middle-lobe somewhat reniform, the margins curved 

 upwards 12. D. Bairdiunnm. 



Stems slender with a bulbiform base. Leaves lanceolate about 4in. 

 long. Petals about 4 lines long, narrow lanceolate. Labellum 

 middle lobe very broad 13. D. Eingianum. 



Stems 1 to 2ft. h'gh, slender. Leaves subcoriaceous, 4 tq Bin. h ng, 

 lanceolate, obscurely bifid, infolded at tbe base. Petals linear- 

 oblong. Labellum middle-lobe reniform 14. D. gracilieaule. 



Stems slender about Ift. high. Leaves lanceolate tew 3 to 4in. long 

 lin. broad. Petals about 5 lines long. Labellum middle-lobe 

 cordate, densely tomentose ... 15. D. Ada. 



Stems C to I8in. long. Leaves lanceolate, 1 to 2in. long. Label- 

 lum tomentose with fringed undulate margins, lateral lobes 

 scarcely any 16. I). Stuart'd. 



Stems rather slender, about 18in. high. Leaves lanceolate, 2 to4in. 

 long, erecto-patent. Flowers yellow. Petals obovate-oblong, 

 very short: Labellum middle-lobe twice as broad as long . . . 17. D. agrostophylliim. 



Stems very slender, often leafy throughout. Leaves 2J to 4Jin. 

 long, 2J to 3J lines broad. Petals and sepals similar, tapering 

 to thread-like points. Label'.um middle-lobe linear-subulate, disk 

 yellow 18. D. Baileyi. 



Stems ■ slender tufted 1 to 4ft. high, leafy throughout. Leaves 

 linear-lanceolate. Sin. long. Petals and sepals with long thread- 

 like points. Labellum middle-lobe bordered by a dark-purple 

 fringe 19. D. Keffordii. 



Stems Ihick forming elorgaled cones. Leaves rigid, narrow- 

 lanceolate almost semi-cylindrical. Petals longer than the sepals 

 narrowed towards the base. Labellum middle-lobe nearly 



orbicular . . . 20. D. canaliculatum. 



Sect. II. Pedilouium. — Stems tvfted, long, terete, simple, stoiit or slender, ereit or 

 pcdidmis, leafy. Leaves distichous, oblong or lanceolate, coriaceons or subviembranous, persistent 

 or deciduous. FloiDers medium-sized, pink or yellow, rarely white, in sliort leaf opposed often 

 dense-floifcrcd secund racemes, or in corymbs or tnfts, rarely solitary ; S2mr stout and often very 

 long, cqnallifig or longer tlian the short triangnlar sepals. Labellum usually very long and 

 narrow, clawed, with often a small lamella callus or spur on the claw near the base. 

 Stems stout, 2ft. or more high, prominently furrowed. Leaves oblong 

 or lanceolate about 4in. long. Petals small. Labellum with a 



long claw, expanding and hood-shaped at the apex 21. D. Smillice. 



Stems much thinner than the last. Leaves acute and unequally 

 bidentate at the apex. Apex of labellum 3-angular . . ... 22. D. ophioylossum. 



