Bolbophjllumi] 
I. ORCHIDE.E. 
263 
tary or spiked on a scape rising from the' base of the pseudobulb ; their 
structure very similar to Dendrobium, but the column is very short, produced 
at the tip into 2 short horns. 
A large genus, with, the same distribution as Dendrobium. 
1. D. pygmajum, Lindl. ; — FI. N. Z. i. 240. Minute, forming patches 
on mossy trunks of trees. Pseudobulbs as large as a pea. Leaf solitary, 
sessile, coriaceous, linear-oblong, ^ in. long, grooved down the middle. 
Flowers minute, solitary, on a short bracteate scape. Upper sepal convex, 
.subacute ; lateral, broadly ovate, acute. Petals shorter, linear-oblong, obtuse. 
Lip ovate, obtuse, disk with thickened lines down the centre. Ovary gib- 
bous, hairy. — Dendrobium pytjmreum, Smith. 
Throughout the Northern aud Middle Islands: common, Banks and Solander, etc. 
4. SARCQCHILTJS, Br. 
Small, coriaceous epiphytes. Stems short. Leaves distichous, linear- 
oblong. Flowers large or small, in bracteate spikes or racemes. — Perianth 
fleshy, open. Sepals nearly equal, obtuse, lateral adnate to the base of 
the lip. Petals smaller, obtuse. Lip continuous with the column, concave, 
fleshy; spur 0. Column short, erect. Anther terminal. Pollen-masses 4, 
waxy, cohering in globose pairs, attached to a broad strap-shaped caudicle, 
which is flxed to the gland of the stigma. 
A small genus, native of subtropical Australia, the Fiji and Mala) Islands. 
1. S. adversus, Hook. f. FI. N. Z. i. 241. Boots long, wiry, strag- 
gling. Stems short, 1-2 in. long. Leaves few, linear-oblong, obtuse or 
subacute, 1-2 in. long, jointed near the base when dry. Scape 1-2 in. long, 
subterminal, slender. Spike 1 in. long, 10-20-flowered, rachis thickened. 
Flowers minute, yellow-green, T U in. diam. Sepals oblong-ovate, obtuse. 
Petals linear-oblong, obtuse. Lip subquadrate, obscurely lobed. 
Northern Island: Opuragi, Banks and Solander ; Bay of Islands and Wairanaka 
Valley, Colenso, Edgerley. A very small-flowered species, compared with the Australian. 
5. GASTRODIA, Br. 
Tall, slender, leafless, whitish or brown terrestrial herbs. Boot long, thick, 
fleshy, twisted, or tuberous. Stem with sheathing brown scales. Flowers 
racemed, pendulous, dirty-white or brownish.— Perianth gibbous at the base, 
subcampanulate or urceolate. Sepals united into a tube to near their tips, 
which are shortly reflexed ; petals smaller, adnate to the tube, their tips re- 
flexed exserted. Lip included, superior, clawed, linear- oblong ; margins 
crenulate. Column short or long, scarcely winged, without lateral appendages. 
Anther terminal, horizontal, 2-celled, deciduous. Pollen-masses 4, united 
in pairs, curved, free, composed of very large grains. Stigma at the base of 
the column, with a free opening to the ovary. Ovary small. 
A curious genus, found in Australia and Tasmania, New Zealand, and the Indian Islands. 
1. G. Cimninghamii, Hook./., FI. N. Z. i. 251. Boot sometimes 18 
in. long, very stout. Stem 1-2 ft. high; scales scarious, short, distant, al- 
