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1·httnia.] CXXXVI. ORCHIDE£. 125<br />
34. THUNIA, Rchb. fiI.<br />
Stems tall, leafy. Leaves distichous, narrow acuminate. Flowers<br />
large in a pendulous terminal short raceme large white (or purple).<br />
Bracts nearly as long as flowers, persistent. Sepals and petals<br />
narrow acuminate. Lip convolute spurred, margm fimbriate.<br />
Column tall, no foot. Pollinia 8, two outer pairs longer than<br />
inner ones. Species 4 or 5, Indian, Siamese and Chinese.<br />
(I) Th. alba Rchb. fil. Bot. Zeit. 1852,764. Phaius albus Lindl.<br />
TV all. Cat. 3749; Bot. Mag. 3991.<br />
Stems 18 in. tall or more, fleshy, glaucous. Leaves linearlanceolate<br />
acuminate glaucous, 6 in. long, I in. wide. Raceme<br />
3 in. long. Flowers 4 to 8. Bracts 1'5 to 2 in. long, narrow boatshaped.<br />
Sepals and petals oblong-Ianceolate acuminate, 2'5 to<br />
3'5 in. long, white. Lip much shorter, white with purple pink<br />
veins, edge crisped fimbriate. Column long, straight, wings rather<br />
large. Hab. Setul, Bukit Rajah Wang (Haniff). Distrib. Sikkim,<br />
Burma, Siam.<br />
35. ARUNDINA, BI.<br />
Terrestrial woody herbs with narrow grassy leaves. Flowers<br />
showy in a short simple or sparingly branched terminal raceme.<br />
Bracts ovate persistent. Sepals lanceolate. Petals wider. Lip<br />
3-lobed convolute round column, midlobe round, crisped, 2 or more<br />
raised nerves on disc. Column tall dilate above winged; anther<br />
helmet-shaped. Pollinia 8, in pairs on a disc. Capsule oblong.<br />
Species 5 or 6; Indo-Malaya, China.<br />
Flowers large pmk; petals ovate very broad; no<br />
yellow on lip or very famt . . . . (I) A. bambusifolia<br />
Flowers smaller; sepals and petals white, or tinted<br />
rose, a yellow patch on IIp . . . . (2) A. speciosa<br />
Flowers very small, pmk; leaves very narrow,<br />
revolute when dry. . . . . . (3) A. revoluta<br />
(I) A. bambusifolia Lilldl. Gen. and Sp. Orch. Pl. 125. A.<br />
speciosa Ridl. Mat. i. 124 (not of Blume). A. densa Lindl. Bot.<br />
Reg. xxviii. t. 38.<br />
Stems 3 to 7 ft. tall. Leaves linear acuminate, 2 to 8 in. long,<br />
'3 to '5 in. wide. Raceme not or rarely branched, 6 to 8 in. long,<br />
few-flowered. Bracts ovate acuminate. Flowers very large; pedicel<br />
I in. long. Sepals lanceolate rose pink, I in. 'long. Petals broader,<br />
1'75 in. long, I in. wide, ovate cuspidate. Lip as long, deep pink<br />
(not yellow in centre), kecIs on lip 3. Capsule 3 in. long. Hab.<br />
Rocky spots in mountains, especially in gravelly islands in streams.<br />
Common. Johor, Gunong Janeng (Kelsall); Endau River. Pahang,<br />
Tahan River; Gunong Tahan (Ridley). Malacca, Mt. Ophir (all<br />
collectors). Perak, Gunong Kerbau (Robinson); Batang Padang<br />
valley (Wray). Dzstrzb. Himalayas.<br />
The lowland and gravelly island forms have often smaller flowers with<br />
occasIOnally some yellow in the lip and narrower leaves. The Ophir and<br />
Kerbau flowers are very large and deep coloured.
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