13. Caladenia. 



ORCHLDACEAE. 



135 



Labellum undivided ; tip only slightly denticulate, 



lateral margins much so ; lateral sepals caudate. 



Labellum with dark divergent veins ; calli in 4 



rows ; lateral sepals about 3 cm., clavate, 



spreading rigidly ; flowers crimson or reddish - 



yellow C. reticulata 6. 



Labellum without conspicuous divergent veins ; 

 calli in 4-6 rows ; lateral sepals usually much 

 exceeding 3 cm., not clavate, spreading but not 

 rigidly so ; flowers usually cream with dark tips, 

 rarely crimson, sometimes yellowish-green and 



brown C. Patersonii 7. 



Denticulations near base of labellum produced into 



combings ; labellum distinctly 3-lobed ; calli in 4 



rows ; lateral sepals about 5 cm., clavate, spreading ; 



flowers very large ; yellow, green, and maroon C. dilatata 8. 



Section 2. 

 Flowers crimson or cream-colored. Lateral sepals elon- 

 gate, 1-8-8 cm. long; contracted into caudate points; 

 petals not longer than lateral sepals ; no sessile yellow 

 calli at base of column. 



Calli in 2 rows , lateral sepals very long and filiform, often 

 exceeding 6 cm. ; flowers crimson in the type, cream- 

 colored with brown veins in the variety 



Calli in 2 rows ; lateral sepals hardly 2 cm. long ; flowers 

 cream with reddish-brown veins 



C. filamentosa 9. 

 C. bicalliata 10. 



Section 3. 

 Flowers pink and white ; petals erect, longer than the 

 lateral sepals ; no sessile yellow colli at the base of column. 

 Leaf glabrous; petals reddish, clavate; lateral sepals 



white, somewhat crescentic 



C. Menziesii 11. 



Section 4. 

 Flowers pink, white, or blue ; perianth-segments similar in 

 shape and color ; the upper one usually erect, others 

 spreading, relatively much wider and shorter than in 

 Sections 1 and 2, never produced into caudae or long 

 points ; no sessile yellow calli at base of column. 

 Perianth-segments pink or white on upper surface. 



Leaf more or less oblong, rather wide ; labellum 

 3-lobed, without transverse pink bands ; calli in 2 



short converging rows G. latifolia 12. 



Leaf narrow-linear ; labellum 3-lobed. 



Labellum with parallel transverse dark pink bands ; 



calli linear in 2 parallel rows, none on tip C. cornea 13. 



Labellum without transverse bands ; middle lobe 

 long and narrow ; calli dark, fleshy, very crowded, 

 sessile except at base, in 2 obscure rows reaching 



the very tip C. congesta 14. 



Labellum with indefinite lateral lobes ; calli in 4 

 rows extending nearly to the extreme tip ; 

 perianth-segments darker on the outside than 



within C. testacea 15. 



Perianth-segments blue or rarely white ; leaf only very 

 slightly hairy. 

 Labellum distinctly 3-lobed, not fringed, with dark- 

 blue parallel transverse bands ; calli in 2 rows, 



extending well on to the tip ; leaf linear C. coeruleo 16. 



Labellum rather indefinitely divided, but 3 lobes 

 present, fringed anteriorly ; calli in 4-6 rather ill- 

 defined rows almost reaching the extreme tip ; leaf 



linear C. deformis 17. 



Labellum undivided ; not fringed ; calli in 2 rows not 

 extending to tip, with 4 tall calli fused or free at 

 extreme base ; leaf oblong C tutelata 18. 



