126 



Three Species of orchid hitherto Unrecorded 

 IN THIS State. 



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



[Read June 4, 1907.] 



Plate XXII. 



I. — Thelymitra venosa (R.Br.). 



This orchid was discovered for the first time in South 

 Australia on December 19, 1906, at Myponga, and on the 

 following day at Square Waterhole, by Mrs. R. S. Rogers. 

 So far it has reached me from no other districts. New South 

 Wales is the only Australian habitat mentioned in Von 

 Mueller's ''Census" and in Bentham's "Flora Australia," 

 although I have in my collection specimens of this plant col- 

 lected by W. H. Archer in Tasmania in the early part of 

 last century. 



Description. 



Height 11 to 30 inches. Stem not robust, and rather 

 sinuous. 



Leaf usually about two- thirds length of plant; linear, 

 channelled. 



Bracts, two acuminate, and a third subtending each 

 flower. 



Flowers 1-5, pediculated : Perianth segments rather thin 

 and veined, especially the inner ones. The outer segments are 

 rather longer than the inner. 



Column winged, middle lobe not produced above the 

 anther. Lateral appendages erect, rather blunt, spirally in- 

 volute, not tufted. 



Anther case very protuberant, with bifid apex, which 

 reaches to about the same level as the lateral appendages. 



Stigma bicusped. 



Found growing in, or on the margin of, water, in swampy 

 country. 



II. — ^Pterostylis furcata (Lindl.). 



Mr. J. M. Black recently handed to me for identification 

 an orchid collected in January, 1907, near Karatta Station, 

 Kangaroo Island. This proved to be P. fvrcata, a species of 

 which no very satisfactory description seems to exist. I there- 

 fore think it advisable to describe this plant with considerable 

 detail, and to produce drawings of plants in my possession col- 

 lected bv R. C. Gunn (Tasmania), and bearing date 5.11.1843. 

 Bentham e^ives Tasmania as a habitat, and Victoria as a 



