186 



THE TASMANIAN FLORA. 



Flowers red-purple and white, fleshy, half buried 



in bracts ... 

 Flowers pink. Labellum the longest segment of 



the flower 

 Flower pink. Labellum recurved, very hairy- 

 glandular, usually without a leaf till after 



flowering 

 Flowers pink and green to brown-red. Labellum 



small, with only 2 small glands at the base . . . 

 Leaves oblong to linear. 



Flower nearly regular, blue and white. Labellum 



covered with microscopical pubegcence 

 Flowers distinctly irregular. Labellum with a 



glandular surface 

 Leaves solitary, linear, sheathing. 



Flowers very numerous, small or minute. 

 Flowers green. The labellum inferior ... 

 Flowers green to purple-brown or yellow, inverted 



so that the labellum over-arches the column... 

 Flowers few or many, large, conspicuous. 



Flowers nearly regular, labellum not distinct 



from the other segments, blue, pink, white, or 



yellow 

 Flowers very irregular, yellow, often marked 



with purple-brown 

 Flowers irregular, labellum with a glandular 



surface, colour various ... 

 Flowers brown-red, inverted. Labellum lid-like, 



on an elastic support ... 

 Leaves on the scape none or bract-like. 

 Flowers numerous. 



Flowers red, spotted ; lobes nearly equal, 



spreading 



Flowers brown, yellow, and white ; lobes united 



nearly to the end 

 Flowers green-yellow or purple-brown, inverted 



so that the labellum is uppermost 

 Flowers few or solitary. 



Flowers green, hood-shaped 



Flowers pink. Bracts few and small 



Flowers brown-purple and white, fleshy. Bracts 



larsre 



Lyperantkus. 

 Cyrtostylis. 



Eriochilus. 

 Acianthus. 



18. 

 20. 



17. 

 16. 



2.3. 



21. Caladenia. 



12. 

 11 



21. 

 15. 



3. 



4. 



11. 



14. 

 17. 



Microtis. 

 . Prasophyllum. 



Thelymitra. 

 Diurts. 

 Caladenia. 

 Caleana. 



Dipodium. 



Gastrodia. 



Prasophyllum. 



Pterostylis. 

 Eriochilus. 



19. Surnettia. 



1. DENDROBIUM. 



Perianth-segments nearly equal, the lower ones dilated into a pouch or spur 

 near their base. Labellum arising from a basal projection of the column, 

 obscurely .3-lobed, the centre with longitudinal raised lines. Column short, but 

 produced below the ovary, with a narrow wing extending throughout its length. 

 Anther terminal, lid- like. 



A large genus, widely distributed, but nearly confined to warm climates. The 

 species are all epiphytal or creeping. 



D. STRIOLATUM, Reichh. Stem-creeping, thin, covered with hyaline sheathe 

 the branches ascending. Leaves few, terminal, cylindrical, fleshy or rather 

 woody, usually curved, about 3 inches long. Flowrs solitary or few, on slender. 



