Demlrobium.] CXXVII. 0KCHIDE7E. 152T 



8. I>. fusiforme (spindle-shaped), Bail. Proc. Linn. Soc. of .V..S'. IT. ii. 277. 

 Stems dark-coloured, seldom exceeding 12in. in height, quite fusiform, deeply 

 corrugated, sometimes swelling again at the immediate base. Leaves 2 to 7 near 

 the summit of the stems, ovate-oblong, acuminate, more or less undulate, thin 

 coriaceous. Peduncle with raceme 6 to lOin. long, slender. Bracts of pedunclfr 

 obtuse, closely sheathing, those subtending the flowers minute spreading, brown. 

 Flowers numerous, very fragrant, white or cream-coloured. Sepals and petals 

 equal, 8 to 10 lines long, sepals 2 to 2^ lines broad, the petals narrower. Label- 

 lum about 3 lines, marked on the inside with purple lines but mostly on the 

 lateral lobes, the middle lobe very short, truncate, twice as broad as long, disk 

 plates and base of column on the inside orange-coloured, speckled with purple- 

 Column short. — D. sjjeciosum yATC. fusiforme, in Syn. Ql. M. 509. 



Hab.: Common on the trees of the northern coastal scrubs; Herberton, J..F. Bailey. 



9. S. delicatum (delicate), Rail, {as a rar. of D. speciosum) in Proc. Iloij. Soc. 

 of Ql. i. Stems numerous, often forming large patches on rocks, &c., slender in 

 the upper part but often much enlarged at the base. Leaves 3 or 4 at the top of 

 stem, 3 to 5in. long, f to IJin. broad, the apex obtuse or emargicate, the texture 

 rather thin. Eacemes 1 or 2 from 7 to Sin. long, with 8 or 9 distant, fragrant, 

 white flowers. Sepals 6 to 8 lines. Petals thinner and narrower than the 

 sepals but about the same length ; spur rather long and curved. Labellum 

 delicate white speckled with purple, the middle lobe very short, apiculate, longi- 

 tudinal plates yellow, column white. 



Hab.: Main Eange, near Toowoomba, Bevj. Crow. 



10. I>. tetragonum (4-angled), A. Cimn. in Bot. Pter/. 1889, Misc 

 38; Bcntli. Fl. Aiistr. vi. 279. " Dhungong," Bundaberg, Keys. Stems 

 from a creeping or tufted rhizome numerous, forming small pseudo- 

 bulbs at the base, from 1 or 2in. to above 1ft. long, very prominently 

 4-angled, rather slender in the lower portion, thickened above the middle 

 or near the apex. Leaves 2 or 8 near the summit of the stem, oblong or 

 broadly lanceolate, acute, 2 to 4in. long. Racemes above the leaves 1 or 2, short 

 and loose, bearing each only 1 to 4 yellowish green flowers bordered with 

 brownish red on pedicels of § to lin. Bracts small and narrow. The dorsal 

 sepal linear-lanceolate, the lateral ones from a broad triangular base of 

 Jin. suddenly contracted into a linear almost filiform point of 1 to nearly l|in. 

 the basal spur ascending, thick and very obtuse, 2^ lines long. Petals yellow much 

 shorter than the sepals, linear-filiform with a slightly dilated lanceolate base. 

 Labellum nearly |in. long, pale yellow streaked with narrow bands of crimson, 

 the lateral lobes broad and prominent, the middle one larger, almost rhomboidal, 

 shortly and acutely acuminate. Disk with 3 raised lines or narrow plates scarcely 

 undulate, the central one more raised and alone continued on the base of the 

 middle lobe.— Lindl. Bot. Reg. 1841, Misc. 2 ; Bot. Mag. t. 5950 ; F. v. M. 

 Fragm. i. 82. 



Hab.: Islands of Moreton Bay, A. Ciinninyliaiii , F. Mueller; Eockhampton, Hoiciiuin, 

 O'Shanesy ; lioekingham Bay, Dallachy. Common in most coastal scrubs. 



Size and colouring o£ flowers very variable but I have not found this constant enough to name 

 varieties. 



11. B. semulum (a rival), B. Br. Prod. 333 ; Benth. Fl. Austr. vi. 280. 

 Stems terete, often thin, sometimes tapering into a long thin base with a small 

 pseudo-bulb as in D. tetragonuw . Leaves 2 or 3 near the summit, ovate or 

 oblong. Eacemes 1 to 3 at the end between the leaves, 2 or 3in. long, the 

 rhachis slender, the bracts small and lanceolate. Flowers rarely above C in the 

 raceme, on slender pedicels of \m. or less. Sepals narrow lanceolate, almost 

 linear, often yearly lin. long, striate, the basal pouch or spur short and broad, 

 turned upwards. Sepals and petals narrow-linear, about lin. long, white, fading 



