190 THE TASMANIAN FLORA. 



lines long, the wing formed ronnd the column above, but short and hardly lobed. 

 Anthers thick, pubescent, and protruding. T. smithiana, H. 



Bellerive, Bruni Island, Southport, George's Bay, and many places in north 

 and north-west ; Bass Straits ; also South Australia. Fl. Nov.-Dec. 



8. DIURIS. 

 Perianth very irregular. Of the outer whorl the upper segment is broad, and 

 over-arches the column ; the lower segments are long and narrow. The 2 upper 

 segments of the inner whorl spreading, with a broad lamina. Labellum deeply 

 3-lobed. Column very short, with a falcate, free, lateral lobe on each side. 

 Anther erect. Rostellum about as long as the anther. 

 A purely Australian genus. 



Perianth-segments all 'directed forwards, pale 



yellow. Labellum long, acute 3. B. pedunculata. 



Upper pair of segments' reflexed, marked with 

 brown or pink-purple. 

 Uppermost segment ne'arly as long as the lower 



linear pair 4- D. sulphurea. 



Uppermost segment short and broad. 



Perianth marked with pink-brown ; lateral lobes 



of labellum broadly obovate ... ... ... 5.2). lonffifolia. 



Perianth blotched with purple-brown ; lateral 

 lobes of labellum broadly lanceolate. 

 Lowest pair of segments about as long as the 



upper pair ... ... ... ... 2. D. maculata. 



Lowest pair much longer ... ... ... i. .D. palustrix. 



1. D. FALTiSTBis, lAndl. Seldom above 6 inches high. Leaves few, linear, 

 sheathing, passing above into the bracts. Flowers usually 3 or 4, yellow and 

 purple-brown. The upper over-arching segment short and broad, the upper 

 pair reflexed ; the linear lower pair much exceeding the upper ones, \-\ inch long. 

 Labellum short, the middle lobe emarginate, lateral lobes broadly lanceolate, 

 falcate. 



Hobart, Bellerive, Huon, Southport, East Coast, Macquarie Harbour, Circular 

 Head, &c. Probably common in damp localities, but overlooked from its affinity 

 to -D. maculata ; also in Victoria and South Australia. PI, Oct. 



2. D. MACDLATA, Sm. Stem tall and slender, usually 1-2 feet. Leave* 

 sheathing, very slender, linear, about 4-6 inches long, usually about 2 or 3, and 

 1 or 2 reduced to bracts above them. Flowers usually 2-6, in a more or less 

 flexuose raceme, yellow, blotched with purple, but to a variable extent. The. 

 upper over-arching segment short and very broad, the reflexed pair ^-f inch 

 long, the linear lower pair often, but not always, crossed, about the same length. 

 Labellum short and truncate in the type, but variable, sometimes nearly \ inch 

 long, and barely emarginate ; lateral lobes as long as the middle lobe, and 

 broadly lanceolate in the type, comparatively shorter, narrower, falcate, and 

 dentate on the outer margin when the labellum is elongated. 



Very common. It occurs also throughout Eastern and Southern Australia. 

 PI. Sept. 



3. D PEDUNCULATA, R. Br. Stem about 6-9 inches high. Leaves sheathing, 

 very narrow-linear, about 4 inches long, usually 2, and 2 or .3 reduced to scales 

 above them. Flowers 1-3, sulphur-yellow or orange, not spotted, the segments 

 all pointing forwards. The over-arching lobe very short, the linear lower pair 

 nearly 1 inch long. Labellum nearly as long as the linear lobes, ovate, acute ; 

 the lateral lobes small, nai'i'ow, acute. 



Very common, principally in grassy situations ; also throughout Eastern and 

 Southern Australia. PL Oct. 



