1566 CXXVII. ORCHIDE^. [Diwis. 



This species, with the flower usually pale coloured and narrow, and easily known by the 

 pubescence of the centre of the labellum, varies much nevertheless in the breadth of the 

 several parts of the flower, and in the raised lines or plates of the labellum, which sometimes 

 end in broad pubescent calli separated by the broad base of the central pubescence of the 

 lamina, sometimes are much rounded, incurved at the end, almost meeting, the pubescent 

 centre of the lamina very narrow. The latter form characterizes to D. lanceolata, Lindl. ; 

 but I have found many intermediates with slight differences in other characters variously 

 combined. — Benth. 



7. S. pallens (pale) Benth. Fl. Austr. yi. 329. A small plant, very nearly 

 allied to D. pedunculata. Flowers smaller, rarely ^in. long, the lateral sepals 

 scarcely herbaceous or quite as petal-like and about as long as the petals ; the 

 dorsal sepal much shorter. Labellum as long as the petals, 3-lobed from a,bpve 

 the base as in D. pedunculata, but the lateral lobes still smaller in proportion 

 than in that species, the raised lines or plates of the disk converging and ending 

 in a single line along the lamina, but fringed with small oalli instead of being 

 pubescent or ciliate.- — Fitzg. Austr. Orch. ii. Pt. 3. 



Hab.: Between Stanthorpe and the border of N.S.W. 



8. I>. abbreviata (shortened), F. v. M. Herb ; Benth. Fl. Austr. vi. 829. 

 Habit rather more of D. maculata than of D. pedunculata, to both of which this 

 species is allied. Leaves rather narrow. Flowers pale-coloured when dry, more 

 or less blotched, usually several in a loose raceme, the pedicels long and the 

 rhachis often remarkably fiexucose. Petals oval-oblong, on very long slender 

 claws ; lateral sepals rather longer, narrow-linear and herbaceous ; dorsal sepal 

 scarcely so long as the labellum, erect and embracing the column at the base, 

 oval-oblong and open in the upper part. Labellum 3-lobed from above the base, 

 the lateral lobes small, triangular or lanceolate, falcate ; the middle lobe much 

 longer, broad but much contracted at the base, the disk with 2 very prominent 

 raised lines or plates ending a little beyond the base of the broad part of the 

 middle lobe, quite smooth and glabrous. Lateral lobes of the column acute, 

 entire or denticulate, the wings continuous in front with the raised lines of the 

 labellum. — Fitzg. Austr. Orch. ii. Pt. 5. 



Hab.: Armidale, Perrott ; Darling Downs, Law. 



Also a specimen from Port Bowen, marked D. duhia, in Herb. E. Brown, appears to be this 

 species. — Benth. 



9. T>. SUlphurea (sulphur-coloured), R. Br. Prod. 316 ; Benth. Fl. Austr. 

 vi. 330. Stature and habit very much those of D. aurea, from which this species 

 is difficult to distinguish without examination of the flowers. Leaves usually 

 rather broader than in that species. Flowers 2 to 5, yellow, almost always 

 blotched with purple at least at the base of the petals. Dorsal sepal about |in. 

 long, embracing the column at the base, narrow ovate and open upwards, lateral 

 sepals longer but not very long, often reflexed, petals also longer than the dorsal 

 sepal. Labellum 3-lobed from the base as in D. aurca, but shorter than the 

 dorsal sepal ; lateral lobes broad, several-nerved and more or less undulate- 

 toothed ; middle lobe at least twice as long, very broad but the sides closely 

 reflexed, the disk with a single raised line along the centre gradually dying off 

 above the middle of the lamina. Lateral lobes of the column acute, quite entire 

 as long as the anther ; the wings joining at the base in the front of the column 

 and continuous with the central keel o£ the labellum. — Lindl. Gen. and Sp Orch 

 509 ; Hook. f. Fl. Tasm. ii. 7, t. 104 A ; Reichb. Beifr, 12 ; D. oculata, F. v. m! 

 in Linnsea, xxvi. 241. 



Hab.: Eight-mile Plains near Brisbane, and between Stanthorpe and the border of N.S.W. 



