188 THE TASMANIAN I'LOBA. 



tte column at the base. Column short, with a small erect appendage on each 

 side. Ancher erect, valvular. 



A very large genus. Common, except in high latitudes. ■ 



S. ADSTRALis, Lindl. A simple, erect, slender plant, 6 inches to 1 foot high, 

 the root of thick tuberous fibres or oblong tijbers. Leaves linear, variable, 2-4 

 inches long, passing into the scale-like bracts of the stalk above. Flowers 

 numerous, in a single spiral line. Perianth pink, about 2 lines long. Labellum 

 as long as the other segments, broad and crisped towards the end. 



Circular Head, South Esk River, Swanport, Spring Vale, George's Bay. 

 Throughout Eastern Australia. Distributed also from Europe, through Asia, to 

 New Zealand. El. Feb. 



6. CALOCHILUS. 



C^uter perianth-segments concave, spreading, acute ; mnei' much smaller. 

 Labellum usually exceeding the other segments, entire, copiously covered w^ith 

 long hairs. Column short, broadly winged. Anther bent forward, valvate, 

 separated from the stigma by a small but conspicuous rostellum. Stigma 

 concave. 



A verv small genus, confined to Australia. 



C. CAMPBSTEis, S. Br. Stem stout, 6-18 inches high. A single long, thick, 

 sheathing, linear-lanceolate," acute leaf, and usually 2 above (much smallerl 

 passing into the floral bracts. Flowers few, in a spike-like raceme, each 

 subtended by a rather large bract. Outer segments green and red, ^-| inch long. 

 Labellum purple, brown, or red, nearly 1 inch long. Anther nearly as long as 

 the column, rather slender. 



Common in most parts ; also in Queensland, New South Wales, and Victoria, 

 PI. Oct.-Nov. 



7. THELYMITRA. 



Perianth-segments nearly equal, spreading.. Labellum not differing in structure 

 from the rest of the perianth. Column erect, short, with broad wings that 

 usuajly extend behind and often above the anther, always bearing a pair of lobes 

 on a level with the anther. Anther erect or bent forward, valvular. 



The genus is not large, and is principally Australian, a few species extending- 

 to the East Indies, and .3 or 4 to New Zealand. 



Stem straight. Flowers blue or pink, rarely white. 

 Lateral lobes of wing with a tuft of hairs or absent. 



Central lobe of wing very short, truncate ... ... 1. T. ixioides. 



Central lobe bifid or thin ... 2. T. aristata. 



Central lobe entire, thick ... 3. T. bngifolia. 



Lateral lobes linear. 



Lateral lobes straight ... ... ... ... 4. T.cyanea. 



Lateral lobes twisted... ... ... ... ... 5. T.venosa. 



Stem flexuose. Flowers pink, yellow, or white. 



Plowers pink; lateral lobes with tuft of papillse ... Q. T. carnea.. 

 Flowers yellow; lateral lobes dark and conspicaous... 7., T. antennifera.. 



Flowers white or nearly so ... g. T. fleacuosa. 



1. T. TXioiDES, Sm. Erect, usually robust, rather variable, but mostly 1-2 

 feet. Leaf solitary, linear, sheathing, long, thick, one or two leafy bracts 

 on the scape passing into the much-reduced floral bracts. Flowers in a 

 raceme, few or many, perianth -segments about | inch long, variable in 

 colour, usually blue spotted with darker blue, or passing into pink spotted with 

 darker pmk, sometimes veined or without spots. Column about 2 lines long, the 



