128 ORCHID ACE AE. 6. Caleana. 



slightly recurved but not nearly so much as in P. nigricans ; margins almost entire ; 

 callous part reaching nearly to the tip, with a groove down the centre, equal in extent 

 to the membranous part : latter unusually thick. Anther with extremely short point. 

 Pollinia 2. Caudicle about as long as the pollen -masses. Rostellum equal in height to 

 anther. Lateral appendages bifid, reddish- brown, triangular -lanceolate, higher than 

 anther and rostellum. 



Yorke Peninsula. Late April-Early May. 



13. P. intricatum (intricate flowers), C. Stuart. Similar in habit, leaf and root to 

 P. nigricans. Flowers on short pedicels, green or yellowish -green with pale-purple linear 

 markings on the perianth -segments, or margins of latter edged with same color, labellum 

 dark-purple, ovary rotund turgid, 2-6 in a somewhat squat spike. Dorsal sepal not very 

 wide, nearly 4 mm. long, tip very acute ; lateral sepals greenish, connate at base, lanceolate- 

 falcate, very divergent, not bulging, concave on inner sides, a little over 4 mm. long. 

 Petals narrowly ovate-falcate, yellowish with 3 purple stripes and more or less purple 

 margins, spreading and recurved, same length as dorsal sepal. Labellum on a semi- 

 circular claw ; broadly ovate or oblong-ovate with markedly recurved tip ; about same 

 length as dorsal sepal ; margins entire or slightly crenulate ; the anterior half fringed with 

 rather short hairs ; callous portion wide, triangular, cleft posteriorly, reaching to tip or 

 nearly so. Anther with very short point or pointless, higher than lateral appendages 

 and rostellum. Pollinia 2, attached by caudicle of medium length to a prominent purple 

 disk. Lateral appendages wide, bifid, ciliate along the upper half of their outer borders. 

 Stigma oval, concave. Rostellum very viscid, reaching only a little above the base of the 

 anther. 



Mount Compass ; also in Tasmania ; Victoria ; New South Wales. April-May. 

 In the other States the flowers are usually of a dark-purple color. 



6. CALEANA, R. Br. 



(After G. Caley, a collector of New South Wales plants.) 

 Flowers reversed. Perianth-segments linear ; the dorsal sepal slightly incurved 

 behind the column ; the lateral ones erect, spreading, or reflexed ; the petals erect or 

 incurved against the sides of the column. Labellum articulate on a movable claw with 

 the base or foot of the column ; the lamina peltate, ovate, its surface convex, smooth or 

 tuberculate. Column elongated, its margins broadly winged throughout their length. 

 Anther valvate, 2 -celled, a pair of pollen -masses in each cell, pollen granular. Caudicle 

 and viscid disk absent. — Terrestrial glabrous slender herbs, with 2 oval or elongated 

 tubers. Leaf solitary radical, linear or narrow-lanceolate. Flowers usually 1-3 on slender 

 pedicels. 



The genus is represented by 4 known species and is limited to Australia and New Zea- 

 land, 1 species being common to both. 



Lateral sepals and claw of labellum inserted at the base of 



the column ; surface of labellum quite smooth C. major 1. 



Lateral sepals and claw of labellum inserted at the end of a 

 foot or basal projection of the column ; surface of. labellum 

 tuberculate C. minor 2. 



1. C. major (the larger Caleana), R. Br. (Text fig. 34, C.) Slender, glabrous, 15-30 cm. 

 high. Leaf radical, solitary, glabrous, narrow-lanceolate, generally reddish, about 5-8 

 cm. long. Stem green or reddish-brown, wiry. Flowers reversed, reddish-brown, 1 or 2 

 on very slender pedicels, the upper flower-bract including a floral rudiment. Dorsal sepal 

 linear-spathulate, acuminate on a contracted base, erect or incurved, channelled, about 

 12 mm. long ; lateral sepals slightly longer, reflexed, channelled, slightly divergent, 

 contracted about the middle, then narrowly' tubular or pointed. Petals narrow-linear, 

 erect against wings of the column, about 9-10 mm. long. Labellum attached to base of 

 column by a long semicircular strap -like claw 5-6 mm. long ; lamina obovate, peltate on 

 the claw, 8-9 mm. long, smooth, centre inflated and hollow, cavity open below, produced 

 on the columnar side into a beak-like process, and into a flattened blunt appendage at 

 the other end. Column incurved ; very broadly winged from anther to base ; wings 

 slightly adnate to claw of labellum. Anther erect, not pointed. Stigma circular, promi- 

 nent, concave. Pollinia free, a pair in each cell, elongated, laminate. No caudicle or 

 viscid disk. Rostellum rudimentary. 



Mount Lofty Range ; sparsely distributed ; also in all the Eastern States and Tasmania. 

 Nov. -Dec. 



2. C. minor (the lesser Caleana), R. Br. Slender, glabrous, 7-18 cm. high. Leaf solitary, 

 glabrous, reddish-brown, narrow-linear, 4-9 cm. long. Stem wiry. Flowers smaller than 

 in C. major, reversed, 1-6, reddish-brown, more rarely greenish, on slender pedicels, a 

 floral rudiment within the uppermost bract. Dorsal sepal linear-spathulate, erect or 

 slightly incurved, about 8 mm. long ; lateral sepals free, linear-lanceolate, channelled 

 on inner surface, erect, arising nearly at right angles from the end of the columnar-foot, 

 about 7 mm. long. Petals narrower than the other segments, almost filiform, erect or 



