Cyrtostylis. | ORCHIDES. 685 
13. CYRTOSTYLIS, R. Br. 
Small delicate terrestrial herbs. Root of rounded tubers on long 
fleshy fibres. Leaf solitary, sessile, oblong to orbicular. Flowers 
few in a terminal raceme, often reduced to one; bracts small. 
Upper sepal linear or linear-lanceolate, erect or incurved, concave ; 
lateral sepals and petals narrow-linear, spreading or deflexed. Lip 
horizontally spreading from the base of the column, undivided, 
oblong, flat, entire; base with 2 calli, produced into raised lines for 
some distance along the lamina. Column elongated, incurved, 
winged on each side towards the summit; stigma cup-shaped, 
placed just under the rosteilum. Anther terminal, erect, 2-celled ; 
pollinia 2 in each cell, faleate or lobed. 
A genus of 2 closely allied species, one found in New Zealand, the other in 
Australia, 
1. C. oblonga, Hook. f. Fl. Nov. Zel. i. 246.—Stems very 
slender, glabrous, 1-4in. high. Leaf towards the base of the stem, 
sessile, spreading, 4-14 in. long, oblong or oblong-ovate, obtuse or 
subacute, cordate or rounded at the base, thin and membranous, 
flat, obscurely 3—-5-nerved. Flowers solitary or in a 2-5-flowered 
raceme, greenish, 4in. diam.; bracts small, ovate-lanceolate. 
Upper sepal narrow linear-obovate, erect; lateral sepals and petals 
narrow-linear, acute, spreading or deflexed. Lip as long as the 
sepals, linear-oblong, obtuse. Column slender, about 2 the length 
of the upper sepal. Pollinia 2 in each anther-cell, oblong-falcate.— 
Handb. N.Z. Fl. 264. 
Var. rotundifolia.— Altogether like thetype, but the leaf is orbicular- 
cordate, 4-ldin. diam.—C. rotundifolia, Hook. f. Fl. Nov. Zel. i. 246; Handb. 
N.Z. Fl. 264. C. macrophylla, Hook. f. Fl. Nov. Zel. l.c. 
Norts Istanp: Not uncommon from the North Cape southwards. SourH 
Istanp: Marlborough—Pelorus Sound, J. Rutland, J. Macmahon! Nelson— 
Buller Valley, 7. #. C. Canterbury—Banks Peninsula, Armstrong; Broken 
River, J. D. inys! T. F.C. Sea-level to 2500 ft. August-October. 
I have been compelled to sink C. rotundifolia as a species. It differs in no 
respect except in the width «f the leaf, and in several localities I have observed 
the two forms growing intermixed and gradually passing into each other. 
14, CALOCHILUS, R. Br. 
Glabrous terrestrial herbs. Root of oblong tubers. Leaves 1 or 
rarely 2 near the base of the stem, narrow-linear; usually there 
are 1 or 2 foliaceous sheathing bracts higher up. Flowers few in a 
terminal raceme, rather large, handsome; pedicels short; lower 
bract usually exceeding the ovary. Sepals almost equal, free; upper 
erect, broad, concave; lateral spreading. Petals smaller, broadly 
faleate. Lip as long or longer than the sepals, sessile, spreading or 
pendulous, undivided, the margins and whole surface except the 
narrow flexuous tip densely fringed with long hairs. Column short, 
