125 



Additions to South Australian Orchide/e. 



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



[Read July 10, 1913.] 



Caleana minor, Br. 



This orcliid has been recorded from the three Eastern States 

 and from Tasmania, but not hitherto from South Australia. 

 Although rather widely distributed it is a rare species and 

 appears to be very localized in its occurrence. I have only col- 

 lected it in one little-known locality in this State, at a place 

 called Kuitpo, near Dashwood's Gully. Caleana major, Br., 

 was also found growing in the same spot. The time of bloom- 

 ing is December. 



Description. — A slender plant from 3 in. to 7 in. high; 

 stem reddish-brown, glabrous ; leaf also reddish-brown, very 

 narrow-linear, glabrous, basal. Flowers reddish-brown, in- 

 verted, single, or in a raceme of from three to six, on fairly 

 long pedicles subtended by small ovate-lanceolate bract. 

 Sepals. — Lateral ones about i in. long, linear-lanceolate, free, 

 channelled anteriorly, forming nearly a right angle with the 

 projecting base of the column. Dorsal sepal about the same 

 length as the lateral ones, linear-spathulate, erect or slightly 

 incurved. Petals narrow-linear, slightly shorter than sepals, 

 incurved on each side of column, and having a common point of 

 origin with the dorsal sepal. Lahellum peltate, attached by a 

 rather long, curved, green, sensitive, strap-like stalk to the 

 rectangular projecting base of the column; lamina ovate- 

 lanceolate, with a bluntly divaricate bifid tip, basal margin 

 with short blunt point ; upper-surface convex, densely tuber- 

 culate except towards its extreme base ; lateral margins also 

 tuberculate; under-surface concave, non-tuberculate. Column 

 almost as long as sepals, with rectangular projecting base or 

 foot ; widely winged with membranes stretching from base of 

 anther to distal end of foot. Anther attached at its base to 

 extreme top of column ; 2 -celled, each cell containing two 

 pollen-masses; tip quite blunt. The stigma lies just below 

 the anther. It is represented by an almost circular disc or 

 sucker with free margins, standing out in relief from the front 

 of the column, to which it is attached by the centre of its 

 posterior convex surface. It is slightly concave in front, and 

 in its upper border the rostellum is represented by a short 

 widely triangular tongue of tissue, which projects upwards 

 between the bases of the two anther loculi. There is no 



