322 



Contributions to Australian Orchidology. 



By R. S. Rogers, M.A., M.D. 



[Read October 14, 1920.] 



Plate XIII. 



Drakaea Jeanensis, n. sp. 



Plant slender, 18-24 cm. high (in my specimens). Leaf 

 radical, orbicular or broadly ovate-cordate, about 25 cm. in 

 diameter, rather rigid, glabrous, upper-surface emerald-green. 

 Stem very slender, glabrous, resilient; a small clasping 

 acuminate bract, about 5 mm. long, considerably below the 

 middle. 



Flower single, on a slender pedicel about 9 or 10 mm. 

 long, subtended by a small ovate-lanceolate clasping bract 

 about 5 mm. long. Ovary somewhat pryamidal, about half 

 the length of the pedicel. Segments of the perianth subequal, 

 narrow-linear, yellowish-green, about 12 mm. long. Lateral 

 sepals expanded at their insertion into the base of the 

 columnar-foot, acutely reflexed downwards and backwards, 

 their tips crossed behind the ovary; dorsal sepal retroflexed 

 behind the column. Lateral petals acutely reflexed down- 

 wards, their tips crossed behind the ovary. Labellum very 

 mobile, articulated by a narrow-linear claw about 9 mm. long 

 to the distal end of the columnar-foot; peltately attached to 

 the claw where it is contricted into two unequal lobes; the 

 constriction or neck encircled by a shaggy leonine mane of 

 reddish-purple hairs with tufted bifurcated tips; the longer 

 lobe with yellowish-green orbicular base hairless except in 

 vicinity of the claw, and a convex somewhat ovate reddish- 

 brown smooth extremity with somewhat revolute margins ; the 

 shorter lobe a more or less globular mass of glistening purple 

 mulberry-like glands interspersed with hairs similar to those 

 on the neck; the two lobes almost in the same straight line; 

 lamina about 12 mm. long, insectiform in appearance. Column 

 very slender, retracted backwards at the base but incurved 

 about the middle; about 9 mm. long (without the foot); very 

 narrowly, and somewhat triangularly, winged in its lower 

 part ; produced beyond the wings into a narrow-linear 

 horizontal foot about 10 mm. long. Anther relatively large, 

 blunt, incurved, about 45 mm. long. Rostellar point not 

 prolonged beyond the anther. 



