THE ORCHID FAMILY 125 



Genus Cyrtostylis. 



These are similar plants to Acianthus, differing only in the winged column, 

 and un-awned perianth. (Name from the Greek, signifying a curved column) . 



Cyrtostylis oblonga has an oblong leaf, and C. rotundifolia, a round one. 

 The former may be found in both islands ; the latter on the east coast of the 

 Northern Island only. 



Genus Corysantlies. 



Small fleshy herbs, with broad leaves, and solitary purple flowers. Petals 

 smaller than the sepals. Pollen-masses four. Found in Australia, New Zealand, 

 and the Malay Archipelago. The species are usually distinguished by the varying 

 shape of the leaves, e.g. C. triloba, C. oblonga, C. rotundifolia. (Name 

 from the Greek, signifying helmet-flowered). 7 sp. 



Corysanthes macrantha (The Large-flowered Corysanthes) . 



This is the largest of all the species. Leaf lin.-l^in. broad, very thick, 

 silvery on the under-side. Flowers ^in.-lin. across, deep purple, with long- 

 tailed slender sepals and petals. Lip broad, spotted, recurved. Both islands : 

 damp bush. Also in Auckland Islands. Fl. Oct. -Dec. 



Genus Microtis. 



Erect slender herbs, with sheathing leaves. Flowers in a thick spike, green, 

 minute. Pollen-masses four. A small genus, chiefly Australian. (Name de- 

 rived from the Greek, meaning a little ear). 1 sp. 



Microtis porrifolia (The Onion-leaved Microtis). 

 A variable plant, from 6in.-24iii. high. Leaf solitary, tubular. Flower- 

 spike 20-80-flowered. Flowers ^in. long, green. Abundant in both islands. 

 Fl. Oct.-Jan. 



Genus Caladenia. 



Slender, tuberous-rooted herbs. Leaf solitary (rarely 2). Scape 1-4-flowered. 

 Column winged. Pollen-masses four. (Name from the Greek, signifying a 

 beautiful gland). 8 sp. 



Caladenia minor (The Lesser Caladenia). 



A slender, hairy plant, 2in.-8in. high. Leaf solitary, narrow. Flower 

 solitary, pink or purple, Jin.-in. across. Lip 3-lobed. Abundant on dry hills 

 in the Northern Island. Found also in Otago. Fl. Oct.-Jan. C. Lyallii is 

 a larger plant, with 1-2 flowers, ^in.-lin. broad. C. bifolia is a distinct plant, 

 with two radical, oblong leaves, and a solitary flower, fin.-lin. broad. Lip 

 broad, entire, with two lines of glands. Found on grassy hills in both islands. 



