136 ORCHID ACEAE. 13. Caladenia. 



1. C. cardioehila (heart-shaped labellum), Tate. Slender, hairy. 15-22 cm. high. Leaf 

 linear-lanceolate, hairy, 4-11 cm. long. Flower single, rarely 2, on a slender pedicel. 

 Segments of perianth brownish-red with yellow margins, or yellowish with brownish -red 

 central streak, subequal. Dorsal sepal linear-lanceolate, erect, incurved, 15-20 mm. 

 long ; lateral sepals much wider, spreading, flat, falco -lanceolate, somewhat contracted 

 at the base, dilated in the middle, then rather abruptly acuminate. Petals much narrower 

 than lateral sepals, linear-lanceolate, spreading or depressed. Labellum on a narrow 

 movable claw ; cordate or broadly ovate ; undivided, margin entire with a conspicuous 

 dark-brown thickening round the apex ; rather flat, usually erect at the base, thereafter 

 spreading with depressed tip, in color reddish -brown or yellow with dark divergent veins ; 

 lamina with 2 (rarely 4) rows oi dark clavate fleshy crowded calli, its anterior third naked ; 

 about 10 mm. long and 11 mm. wide. Column retracted, then much incurved, about 

 11 mm. long, widely winged in its upper two -thirds ; 2 yellow sessile oval calli at the 

 base. 



Golden Grove ; Yatala Vale ; Halbury ; Nuriootpa ; Mount Lofty Range ; Robe ; 

 Millicent ; Kangaroo Island : also recorded from Victoria. Sept. -Oct. 



2. C. gladiolata (bayonet -shaped, referring to the points of the sepals), Rogers. Rather 

 stunted, hairy, 8-18 cm. high. Leaf hairy, varying in shape and size from oblong-lanceo- 

 late to ovate lanceolate. Flower single, rarely 2, greenish yellow with red markings. 

 Sepals similar, subequal, about 16-20 mm. long and 2 mm. in widest part, traversed by a 

 longitudinal red line in lower two-thirds, thereafter constricted into a thickened reddish - 

 brown glandular bayonet-shaped point ; the dorsal one erect, incurved or retracted ; the 

 lateral ones spreading, flattened except at their extremities. Petals rather shorter, 

 linear-lanceolate, about 14-16 mm. long, spreading, with central reddish line, tips very 

 glandular and similar to the sepals. Labellum ovate, about mm. long, on a movable 

 claw, undivided, yellowish -green with maroon recurved tip; margins practically entire, 

 at first erect against the column, then recurved from about the middle ; lamina without 

 conspicuous veinings, the calli large, fleshy, pyriform, dark reddish-brown, in 4 crowded 

 rows and not extending to the tip. Column about 8 mm. long, much incurved, with 2 

 yellow sessile calli at the base, widely winged in its upper part ; wings tapering towards 

 the bast. 



Hornsdale ; near Appila-Yarrowie ; Cherry Gardens. Sept. 



3. C. leptochila (thin labellum), Fitzg. Slender, hairy, 15-45 cm. high. Leaf very 

 hairy, narrow-lanceolate to oblong or elliptical-lanceolate, sheathing at the base, lamina 

 4-14 cm. long. Flowers 1 or 2, large, prevailing tints yellowish -green and reddish -brown. 

 Perianth -segments with a central reddish -brown stripe, spreading (with exception of the 

 dorsal sepal) ; sepals clavate, subequal. Dorsal sepal incurved, 2|-3 cm. long, tapering 

 from the base to a fine clavate point : lateral sepals dilated in basal half, thereafter con- 

 stricted into fine upturned clavate points. Petals falco -lanceolate, gradually tapering 

 into fine non-clavate points, 2-2* cm. long. Labellum oblong or broadly lanceolate, 

 11-13 mm. long (including the claw) and 41 mm. wide, on a distinct movable claw, un- 

 divided, dark reddish -brown, erect in lower half, thereafter recurved, margin practically 

 entire, tip generally acute, sometimes blunt, lamina almost flat ; calli sessile (except 

 near the claw), in 4 rows, rarely extending beyond the bend. Column 10-1 2 mm., retracted 

 at base, thereafter erect or incurved, widely winged above, more narrowly below ; 2 

 sessile yellow calli at the base. Anther with straight sharp point. 



N;P. and other parts of Mount Lofty Range ; Wirrabara ; Hornsdale ; Angaston ; 

 Delamere ; Bordertown ; also Victoria. Oct. 



4. C. OVata (ovate labellum), Rogers. Slender, hairy, 10-23 cm. high, Leaf very hairy, 

 3-7 cm. long, narrow -lanceolate or oblong-lanceolate. Flowers usually solitary, occasion- 

 ally 2, very rarely 3, large, reddish-yellow. Sepals with dark central stripe, dilated in 

 their basal half thereafter contracted into very fine clavate caudae. Dorsal sepal 2-2| cm. 

 long, erect or slightly incurved over column ; lateral ones rather longer, spreading. Petals 

 shorter than sepals, lanceolate, not clubbed, spreading. Labellum ovate on a short 

 movable claw ; 9-10 mm. long (without the claw) and 8 mm. wide ; reddish-yellow with 

 dark-red tip, moderately recurved from about the middle, margin entire, lamina with 

 dark divergent veins ; the calli extending to about the bend, but very inconstant, in 

 2 or 4 rows, sometimes represented by a few minute irregularly placed bossings, occasionally 

 entirely absent, generally small mammillary except for a few short clavate ones near the 

 claw. Column about 8 mm. long, rather incurved, more winged in its upper than lower 

 half ; 2 yellow sessile calli at the base. 



Abundant along south coast of Kangaroo Island from Wilson River to Eleanor River. 

 Sept. -Oct. 



5. C. toxochila (bow-lipped), Tate. Rather dwarf, hairy, 12-30 cm. high. Leaves 

 slightly hairy, oblong, 6-15 cm. long and 5-20 mm. wide. Flowers solitary or rarely 2, 

 prevailing tints yellow, green, and maroon. Perianth-segments generally yellowish- 

 green, with maroon stripe down centre ; the sepals acuminate and usually slightly clavate. 

 Dorsal sepal erect, incurved, narrower and rather shorter than the others, about 2 cm. 



