348 ORCHIDACEAE. [Caleana. 
10. CALEANA B. Br. 
Glabrous terrestrial herbs. Root of small rounded tubers on fleshy 
fibres. Leaf solitary, linear or lanceolate or oblong. Flowers solitary or 
2-4 in a terminal raceme; bracts acute. Sepals and petals subequal, all 
linear; the upper sepal erect, the lateral sepals and petals spreading or 
deflexed (but the position apparently reversed through the ovary being 
recurved). Lip uppermost, jointed on to the base of the column or to a 
projection from it, mobile ; claw linear, incurved; lamina ovate or oblong, 
_peltate, undivided, entire, smooth or tuberculate. Column elongate, some- 
times produced at the foot, broadly winged throughout its whole length. 
concave. Anther terminal, erect, 2-celled; pollinia 2-partite, granular. 
A small genus of 4 species, all of them natives of Australia, 1 extending to New 
Zealand. 
I. ©. minor &. Br. Prodr. (1810) 329.—Stem slender, wiry, almost 
filiform, 2-8in. high, usually tinged with red. Leaf radical, about } as 
long as the stem, rather fleshy, channelled. Flowers 1-4, about + in. 
long including the ovary, greenish tinged with red, reversed; pedicels 
4-$in.; bracts minute, acute. Sepals and petals narrow-linear, slightly 
dilated above the middle, nearly equal; upper sepal attached just above 
_ the top of the ovary, the lateral affixed to the basal projection of the column. 
Lip uppermost, very remarkable in shape; the lower. portion claw-like 
and articulated on to the basal projection of the column; the upper part 
expanded into a broad lamina which is peltately attached to the claw; 
lamina convex above and covered with close-set reddish tubercles, which 
are largest towards the margins, under-surface smooth, concave. Column 
tather long, with a broad basal projection, broadly winged all round, 
concave, forming a horizontally placed cup or pouch.—Benth. Fl. Austral. 
vi (1873) 366; T. Kirk in Trans. N.Z. Inst. xxiv (1893) 425; Cheesem. 
in Trans. N.Z. Inst. xxiv (1892) 411, and Man. N.Z. Fl. (1906) 677. 
NortH Istanp: Auckland — Kaitaia, R. H. Matthews! H. Carse! Rotorua, 
Spencer! Waiotapu, H. J. Matthews / December—January. 
\. most remarkable little plant. The column is horizontally placed, forming a 
broad pouch; the lamina of the lip, when at rest, is elevated by the slender elastic 
claw, and swings directly above it. When an insect alights on the lamina it over- 
balances, shutting up the insect within the concavity of the column. For a full account 
of the fertilization of the genus, reference should be made to Mr. Fitzgerald’s magnificent 
work on Australian Orchids (vol. i, pt. 6), 
11. PTEROSTYLIS R. Br. (18109) 396. nom. Corr. 
Terrestrial leafy herbs. Root of small rounded tubers on long fleshy 
fibres. Leaves radical and cauline, either all similar or the radical broader 
and ovate or oblong, often subrosulate; the cauline lanceolate or linear 
or reduced to sheathing bracts. Flowers large or small, greenish, usually 
solitary, rarely several in a terminal raceme. Upper sepal erect, incurved, 
concave, conniving with the petals and forming a broad boat-shaped hood 
(galea). Lateral-sepals adnate at the base to the foot of the column, more 
or less connate into an erect or recurved 2-lobed lower lip; the lobes often 
drawn out into long acuminate points. Petals lanceolate, falcate. Lip 
attached by a short claw to the basal projection of the column, mobile ; 
lamina linear or oblong, produced at the base above the claw into a long 
or short usually curved appendage. Column elongated, incurved, furnished 
Seo Hote, 7. A.S. NA. 97 aay “atl Ler 
my Tata (Dn ch, . V"U-% WO. 
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