1 34 ORCHID ACEAE. 13. Caladenia. 



sheathing, ovate, oblong or broadly lanceolate, often small at the time of flowering, 

 increasing in size thereafter and developing marked parallel veins. 



Peculiar to Australia and consisting at present of only 1 species, but closely allied to 

 C. Menziesii and the genus Eriochilus, which have been included under Leptoceras by 

 some botanists. On the other hand the single member of this genus is commonly placed 

 under Caladenia by taxonomists and is so included by Bentham. 



1. L. fimbriata (fringed, referring to the labellum), Lindl. (Text fig. 32, A.) Very 

 slender, 15-20 cm. high, with the characters of the genus. Flowers 1-3, reddish or 

 yellowish -brown, on slender pedicels, a floral rudiment included within the uppermost 

 flower bract. Dorsal sepal about 9 mm. long. Petals longer than the other segments 

 about 11mm. Labellum greenish, with reddish-brown pubescent spots, about 9 mm. 

 wide and 5 mm. long. Column 6-6^ mm. — Caladenia fimbriata, Reichb. f. ; Eriochilus 

 fimbriatus, F. v. M. 



Black Hill ; Golden Grove ; Dingabledinga ; Port Elliot ; Inman Valley ; Yankalilla ; 

 Kuitpo ; Mount Compass ; Bordertown ; Kangaroo Island ; also Western Australia 

 and Victoria. April-July. 



13. CALADENIA, R. Br. 



(Greek kalos, beautiful ; aden, a gland.) 

 Dorsal sepal erect, incurved over the column or more rarely retracted, usually narrow ; 

 lateral sepals nearly equal to it, but flat, spreading or reflexed. Petals narrow, erect, 

 spreading or reflexed. Labellum often on a movable claw and generally erect at the base ; 

 undivided or 3-lobed ; the lateral lobes when present erect ; the middle lobe or upper 

 part of the undivided labellum recurved (PL 8, i., ii., fig. 6, ml.) ; the margins often fringed 

 or toothed ; the lamina with sessile or stalked calli (figs, 1, 2, 5, 6, cal.), arranged in 2 or 

 more longitudinal rows or irregularly scattered or crowded. Column erect or incurved, 

 more or less 2-winged in the upper part (figs. 4, 7.). Anther terminal, more or less oblique, 

 usually pointed, 2-celled, valvate. Pollinia 4, lamellar, commonly leg-of-mutton shape, 

 2 free masses in each cell, granular. Stigma immediately below the anther, circular and 

 disk -like. Rostellum poorly developed. Viscid disk and caudicle absent. — Terrestrial 

 herbs, generally very hairy, but sometimes only slightly so, originating from rounded 

 tunicated tubers, the more recent tubers generally to be found below those of previous 

 seasons. Leaf more or less hairy (except in C. Menziesii), solitary, elongate, generally 

 linear-lanceolate or oblong, from within a scarious sheathing scale close to the ground. 

 Flowers solitary, or in a loose raceme or panicle of (apparently) not more than 6, on an 

 erect scape with an empty bract or sheathing scale about the middle and a similar bract 

 under each pedicel ; in one species both leaf and bract are absent at time of flowering ; 

 flowers usually erect and variously colored. The species with long-tailed sepals are 

 commonly known as Spider Orchids. 



A rather large genus comprising nearly 60 known species. Of these, 3 or 4 are reported 

 from New Zealand and 54 from Australia. Of the latter all are endemic with the exception 

 of one (C. cornea) which has been reported from Java. Curiously enough no records have 

 been made from any of the islands intermediate between Java and Australia. ; 



Section 1. 



Flowers particolored, usually in shades of yellow, green, 

 reddish-brown, or white. Lateral sepals elongate, 

 2-8 cm. long, constricted into short acuminate or 

 caudate points ; petals not longer than sepals ; two 

 sessile yellow glands at base of column. 

 Margins of labellum entire or practically so ; flowers 

 yellowish -green and reddish-brown. 

 Calli stalked ; lateral sepals not produced into caudae. 



Calli in 2 rows ; lateral sepals shortly acuminate. . . C. cardiochila 1. 

 Calli in 4 rows ; lateral sepals contracted into 



bayonet-shaped points C. gladiolata 2. 



Calli sessile except at extreme base of labellum ; lateral 

 sepals caudate, clavate. 



Labellum narrow-oblong or oblong-lanceolate C. leptochila 3, 



Labellum broadly ovate . C. ovata 4. 



Margins of labellum definitely serrate or denticulate. 

 Denticulations on margin short. 



Labellum obscurely 3-lobed or crescent-shaped ; 

 margins of lateral lobes only denticulate anteriorly ; 

 lateral sepals shortly acuminate ; flowers greenish- 

 yellow or reddish-brown . C. toxochila 5. 



