Dcndrobiim.] CXXVII. ORCHIDE^. 1533 



very much undulate but scarcely 3-lobed ; the disk with 3 raised lines or plates, 

 even on the claw, much undulate on the lamina. — D. jmngentifoiiian, F. v. M. 

 Fragm. i. 189. 

 Hab.: Mount "Lindsay, IC. Hill; Bunya Mountains and other southern ranges. 



28. B. rigidum (rigid), R. Br. Prod. 333 ; Bejith. Fl. Aiistr. vi. 284. 

 Stems very numerous forming dense thick masses, arising from slender shortly 

 creeping rhizomes, often a ft. or more long and pendulous, the young shoots 

 covered by the membranous scarious sheathing scales. Leaves sessile on a 

 broad base as in D. Unijuiforme, and similarly very thick fleshy and nerveless, 

 mostly 1 to 1^ but sometimes Bin. long, oblong and almost acute. Flowers most 

 frequently solitary, on peduncles of about 2 lines, clothed with coloured bracts, 

 pedicels 3 lines long with 2 minute bracts at the base. Dorsal sepal ovate 8 

 lines long, acute, the lateral ones about as long and deltoid, all of a dull-white 

 and covered with very minute dots, the apex of each red and bearing on the back 

 a minute point. Petals linear, as long as the sepals but narrower. Labellum 

 long as the sepals, 3-lobed, lateral lobes pointed at the upper end, bordered with 

 deep-red, middle lobe oblong, as long as the lateral ones and broadly bordered 

 by the same deep red colour except at the apex, where it is yellowish like the 

 whole length of the disk. Disk ribs 3 not crested and rather distant. from each 

 other and not prominent. Column broad red on the edge ending in points on 

 either side of the anther. Anther lid ovate, greenish, with a line of white 

 tomentum in front, pollen-masses amber colour. Stigma deeply sunk in the 

 column. — Lindl. Gen. and Sp. Orch. 85 ; Fitzg. Austr. Orch. i. Pt. 4. 



Hab.: Endeavour Eiver, Banks and Solander. 



Tlio species is met with at the Daintrees and a few other northern localities. 



29. 3>. linguiforme (tongue-shaped), Swartz. in K. Akad. Stoclch. y. UavdI. 

 1800, 247 ; Benth. Fl. Austr. vi. 284. Stems or rhizomes closely creeping and 

 rooting at the nodes, rather thick and fleshy, the membranous scarious sheathing 

 scales completely covering the young shoots. Leaves articulate on broad circular 

 scars or scarcely raised disks at the axils of the sheaths, ovate or oblong, from 

 under 1 to 2in. long, but very thick and fleshy. Eacemes from the rhizomes 2 

 or 4in. long, with a slender rhachis, bearing from 6 or even fewer to above 20 

 flowers on filiform pedicels of 3 to 5 lines. Bracts minute and scale-like. Sepals 

 narrow linear-lanceolate, 7 to 10 lines long, the pouch or spur short broad and 

 turned upwards. Petals narrow-linear, about the length of the sepals. Labellum 

 under 3 lines long, much contracted at the base, the lateral lobes rather broad, 

 prominent and obtuse, the middle lobe longer, narrow-ovate, obtuse, the disk 

 with 3 very prominent raised lines or plates, even between the lateral lobes, all 

 three produced and much undulate on the middle lobe. Capsule oval-oblong, 

 about ^in. long.— Sm. Exot. Bot. i. 19 t. 11 ; R. Br. Prod. 333 ; Lindl. Gen. and 

 Sp. Orch. 85 ; Eeichb. f. Beitr. 51 ; Bot. Mag. 5249. 



Hah.: Near Brisbane, Dallachy ; Moreton Bay, ir. Hill. Stems of trees and common on 

 rocks. 



Var. Nugentii. This species differs considerably in the form and size of its tongue-like 

 thick leaves, but until I received Mr. Nugent's specimens I had not observed any marked 

 variation in the flowers. These, however, at first sight strike one as being distinct, and differ 

 from the more commonly known plant in the following particulars : — Smaller flowers, shorter 

 pedicels. Sepals scarcely exceeding 4 lines in length ; white, except sometimes a tinge of yellow- 

 near the pouch. Petals longer than the sepals. Labellum not half the length of tUe other 

 segments, the lateral lobes being of a lilac colour ; in other respects this northern plant agrees 

 with the normal form. 



Hab.: Eungella Eange, L. J. Nugent. 



30. 2>. teretifolium (leaves terete), R. Br. Prod. 333 ; Benth. Fl. Austr. 

 vi. 285. Pencil orchid. Stems clustered on a creeping rhizome, 2 to 8ft. long, 

 terete, divaricately branched. Leaves few, terminating the branches or clasping 



Pakt V M 



