Adenochilus. | ORCHIDES. 691 
1s. ADENOCHILUS, Hook. t. 
Slender terrestrial herbs. Leaf solitary, placed near the middle 
of the stem, ovate. Peduncle slender, 1-flowered, with 1 or 2 
sheathing bracts between the flower and the leaf, the upper of 
which sometimes bears in its axil the minute rudiment of a second 
flower. Flower small. Upper sepal erect, incurved, concave or 
almost galeate; lateral lanceolate, placed under the lip. Petals 
linear-lanceolate, almost equalling the sepals. Lip shortly clawed 
on to the base of the column, 3-lobed; lateral lobes large, 
erect; middle lobe smaller, caudate, reflexed; disc and middle 
lobe with several rows of small stalked calli. Column slender, 
curved, winged; wings produced upwards into 2 toothed lobes. 
Stigma prominent, placed just under the rostellum. Anther 
terminal, erect, 2-celled; pollinia 4 in each cell, granular. 
The genus is limited to two species: one endemic in New Zealand, the 
other (A. Nortoni, Fitzgerald) in Australia. It is closely allied to both Caladenia 
and Chiloglottis, differing from the former in the wing of the column extending 
behind the anther, and from the latter in the solitary leaf and glandular- 
pubescent perianth. 
1. A. gracilis, Hook. f. Fl. Nov. Zel. i. 246, t. 564.—Stem 
slender, glabrous, 5-10in. high. Leaf sessile half-way up the 
stem, 4—1 in. long, ovate or ovate-oblong, acute, membranous, veins 
reticulated. Flower about $in. diam., more or less finely glandular- 
pubescent. Ovary narrow, cylindrical, $-$in. long. Upper sepal 
adnate to the back of the column towards the base, acuminate ; 
lateral sepals and petals subsimilar, erect, acuminate. Lip much 
shorter than the sepals and petals and almost concealed by them ; 
middle lobe much smaller than the lateral, caudate, reflexed ; calli 
numerous, stipitate, yellow. Column broadly winged for its whole 
length, wings produced upwards behind the anther into two broad 
toothed lobes.—Handb. N.Z. Fl. 265. 
NortH Istanp: Forests near Lake Waikaremoana, Colenso ! SouTtH 
Istanp: Nelson—Near Foxhill, P. Lawson! Buller Valley, 7. F. C.; Mount 
Owen, Townson! Otago—Mount Maungatua, forests to the west of Lake Te 
Anau, Petrie! near Lake Hauroto, G. M. Thomson ! 500-2500 ft. Novem- 
ber—January. 
19. TOWNSONIA, n. gen. 
A small slender terrestrial herb. Root of creeping fleshy 
caudicles thickened here and there into small tubers. Radical 
leaves 1-3 from the caudicles, rarely at the base of the flowering- 
stem, petiolate, ovate-orbicular. Cauline leaf or empty bract soll- 
tary half-way up the stem, sessile, ovate, acute, often much 
reduced in size. Flowers 1 or 2, small; perianth horizontal or 
deflexed. Upper sepal much incurved, broad, concave, almost 
galeate ; lateral placed in front of the lip, lanceolate, margins in- 
volute. Petals minute, erect. Lip clawed on to the base of the 
