FOC_25_Epidendroidea..

474
0.6–1.8 cm, thickly leathery, apex praemorse. Inflorescences 2
or 3, 3–4.5 cm, 1- or 2-flowered; peduncle 2–3.5 cm; rachis
weakly zigzag, 0.5–5 cm; floral bracts broadly ovate, 4–6 × 2–4
mm, apex obtuse-acute. Flowers thickly textured, widely
opening, 3.5–5 cm in diam.; pedicel and ribbed ovary yellowish
green, 1.5–3 cm; sepals and petals yellowish green, not tessellated.
Dorsal sepal oblong-spatulate, 20–30 × 5–9 mm, base
cuneate, apex obtuse-acute; lateral sepals lanceolate, 20–30 ×
5–10 mm, base cuneate, apex obtuse. Petals falcate-oblong, 18–
28 × 2–5 mm, base contracted, apex acute; lip golden yellow to
white, striped with violet-purple to red-brown, ca. as long as or
longer than sepals, fleshy, spurred; lateral lobes erect, abaxially
yellowish green, adaxially with dull purple stripes, ovate-triangular,
2–4 × 2–5 mm, apex obtuse; mid-lobe abaxially yellowish
green with dull purple margins, adaxially white with dull
purple longitudinal stripes, ovate to subpandurate, 11–20 × 4–5
mm, apex cleft sometimes with short point in sinus; disk rugulose
with 2 slender elongated processes on apical margin; spur
broadly conic, 6–9 mm. Column white, 4–8 mm; anther cap
yellow, 3–3.5 mm wide. Fl. May. 2n = 28, 38, 76.
On tree trunks in evergreen broad-leaved forests; 700–1700 m. SE
Xizang, SW Yunnan [Bhutan, India, Nepal, N Vietnam].
EPIDENDROIDEAE
10. Vanda fuscoviridis Lindley, Gard. Chron. 1848: 351. 1848.
广东万代兰 guang dong wan dai lan
Vanda kwangtungensis S. J. Cheng & C. Z. Tang.
Stems ca. 25 cm. Leaf blade ca. 25 × 2.5 cm, thick, apex
unequally 2-lobed and erose. Inflorescences 1 or 2, ca. 23 cm,
ca. 9-flowered; peduncle ca. 12 cm; rachis weakly zigzag, ca.
11 cm. Flowers thickly textured, widely opening, 3.4–3.9 cm in
diam.; pedicel and ovary yellowish green, 3–4 cm; sepals and
petals abaxially white, adaxially yellowish with brown tessellations.
Dorsal sepal oblanceolate-spatulate, 16–17 × ca. 8 mm,
base contracted into a short claw, apex obtuse; lateral sepals
obovate-spatulate, 15–16 × 8–10 mm, base contracted into a
short claw, apex obtuse. Petals broadly spatulate, 16–17 × 9–10
mm, base clawed, apex obtuse; lip ca. as long as or longer than
sepals, spurred; lateral lobes erect, white tinged pink, ovate-triangular,
ca. 4 × 2 mm, apex obtuse; mid-lobe white with purple-brown
stripes, pandurate, ca. 15 × 5–7 mm, apex retuse;
spur conic, 9–10 × ca. 2 mm. Column ivory-white, ca. 7 mm.
Fl. unknown.
Limestone slopes. Guangdong [N Vietnam].
171. RHYNCHOSTYLIS Blume, Bijdr. 285 [“Rynchostylis”], 434. 1825.
Anota (Lindley) Schlechter; Vanda sect. Anota Lindley.
钻喙兰属 zuan hui lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood
Herbs, epiphytic, monopodial. Stems short, stout, with thick roots. Leaves many, often lorate, long and narrow, thickly fleshy,
channeled, jointed and sheathing at base, unequally bilobed or toothed. Inflorescences lateral, erect or pendulous, racemose, densely
many flowered; peduncle and rachis stout. Flowers resupinate, medium-sized. Sepals and petals similar, spreading; lateral sepals
often wider and ± oblique. Petals smaller than sepals; lip adnate to column foot, immovable, entire or slightly 3-lobed, spurred at
base; spur laterally compressed and backward-pointing. Column short, with a short foot; anther cap long pointed; rostellum long
pointed; pollinia waxy, 2, globose, cleft; stipe long and narrow, apex slightly dilated; viscidium ovate, usually small.
About three or four species: from Sri Lanka, India through mainland SE Asia, China, the Philippines, south through Malaysia and Indonesia; two
species in China.
1a. Lip apex not 3-lobed; column foot distinct; inflorescence pendulous; spur somewhat transversely compressed;
sepals 8–11 mm; lip glabrous ............................................................................................................................................. 1. R. retusa
1b. Lip apex distinctly 3-lobed, small central lobe truncate, fleshy, lateral lobes broad, orbicular; column foot very
short; sepals 12–14 mm; lip with indistinct, sparsely pilose basal keels, downturned on front wall of spur ............... 2. R. gigantea
1. Rhynchostylis retusa (Linnaeus) Blume, Bijdr. 286. 1825.
钻喙兰 zuan hui lan
Epidendrum retusum Linnaeus, Sp. Pl. 2: 953. 1753;
Aerides retusa (Linnaeus) Swartz; Gastrochilus retusus (Linnaeus)
Kuntze; Limodorum retusum (Linnaeus) Swartz; Saccolabium
retusum (Linnaeus) Voigt.
Stems ascending, usually 3–10 cm, 1–2 cm in diam., enclosed
in leaf sheaths. Leaves broadly lorate, 20–40 × 2–4 cm,
unequally bilobed. Inflorescences 1–3, pendulous, 30–40 cm,
densely many flowered; rachis 20–30 cm, thick; floral bracts
reflexed, broadly ovate, 3–4 mm. Flowers unscented, 1.7–2.3
cm in diam., sepals and petals white and spotted with pink or
pale purple, lip purplish pink, apex white, spur white; pedicel
and ovary 7–10 mm. Dorsal sepal elliptic, 7–11 × 4.2–5 mm,
obtuse; lateral sepals obliquely oblong, 7–11 × 4.5–5.5 mm,
base adnate to column foot, apex obtuse. Petals narrowly oblong,
7–7.5 × 2.5–3 mm, obtuse; lip often conduplicate, oblongspatulate,
8–10 × 5–6 mm, rounded, apiculate, or slightly retuse,
spurred; spur laterally compressed, 6–8 mm, rounded. Column
ca. 4 mm, foot ca. 2 mm; stipe ca. 2.2 mm, linear, dilated and
capitate; viscidium oblanceolate, ca. 1.8 × 0.6 mm. Capsule
obovoid or subclavate, ca. 2.5 × 1.3 cm. Fl. May–Jun, fr. Jun–
Jul. 2n = 38.
Epiphytic on tree trunks in open forests or at forest margins; 300–
1500 m. SW Guizhou, S Yunnan [Bhutan, Cambodia, India, Indonesia,
Laos, Malaysia, Myanmar, Nepal, Philippines, Sri Lanka, Thailand,
Vietnam].