330 



are not densely packed and do not extend to the extreme apex 

 as in the new species ; the calli are also of the linear-golf-stick 

 type, whereas in C. iridescens they have short pedicels with 

 large fleshy globular heads. The labellum is relatively very 

 much larger in testacea and the lateral petals are about equal 

 in length to the lateral sepals. 



The new species should be placed between the above 

 species in the differential table of these Caladenias in Trans.. 

 Roy. Soc. S. Austr., xlii., 32. 



Caladenia cordiformis, n. sp. 



A fairly robust plant, 18-32 cm. in height. Leaf broadly 

 linear to oblong-lanceolate, very hairy, about 11 cm. long^ 

 6-10 mm. wide. Stem very hairy; with a single subulate 

 non-clasping bract, about 1'5 cm. long, situated at varying 

 heights abo\e the base. 



Flowers single, with a clasping ovate-lanceolate bract 

 subtending the pedicel, a floral rudiment sometimes contained 

 within this bract. 



Lateral sepals greenish, 3 -nerved, generally with a broad 

 reddish-brown stripe down the centre; spreading, with a- 

 tendency to become reflexed; dilated in their proximal part,, 

 contracted gradually into long points, the points shorter than 

 the dilated portion ; longer and wider than the other perianth 

 segments, about 2'6 cm. long and 3"5 mm. in the widest part; 

 under-surface lighter in colour than upper-surface. Dorsal 

 sepal usually erect and incurved over anther, but sometimciS 

 retracted; greenish-yellow traversed by three reddish-brown 

 nerves; gradually contracting into a fine point about the same 

 length as the dilated part; about 2'4 cm. long and 2 mm. wide. 

 Lateral petals spreading with a tendency to become reflexed | 

 3-nerved; greenish-yellow with a reddish-brown stripe down 

 centre; lanceolate aboat 2 cm. long and 25 mm. wide; points 

 much shorter than dilated part. 



Labellum moveable on a short claw; widely cordate; 

 margins entire; rather indefinitely 3-lobed; about 10 mm. 

 long (extended) and 10 mm. in widest diameter; lateral lobes 

 green wide, not very clearly separated anteriorly from the 

 middle lobe; latter dark reddish-brown, broadly triangular, 

 recurved, apex rather blunt, margins slightly crenulated; 

 lamina not very concave, central part dark reddish-brown; 

 calli in four rows (rarely in two rows), of the linear .golf -stick 

 type, rather fleshy and dark reddish-brown in colour, 

 extending from the claw to anterior margins of lateral lobes 

 but not invading the tip or middle lobe. 



Column incur\>ed so as to be semicircular in profile; very 

 widely winged in its upper three-fourths; 10 mm. in height 



