FOC_25_Epidendroidea..

EPIDENDROIDEAE
stout, footless; rostellum short; pollinia 2, waxy, subglobose to ovoid, entire, attached by a common linear stipe to a solitary ovate
viscidium.
Eleven species: India, Thailand, and Peninsular Malaysia, north to Taiwan and the Philippines, south to Indonesia, east to New Guinea,
Australia, and the Pacific islands; one species (endemic) in China.
The genus Tuberolabium has been monographed by J. J. Wood (Nordic J. Bot. 10: 481–486. 1990).
1. Tuberolabium kotoense Yamamoto, Bot. Mag. (Tokyo) 38:
209. 1924.
管唇兰 guan chun lan
Saccolabium kotoense (Yamamoto) Yamamoto.
Stems short, indistinct. Leaves 2–7, ± basal; blade oblong
or oblong-elliptic, 6.5–16 × 2–4 cm, rather fleshy or thickly
leathery, apex obtuse and slightly bilobed. Inflorescence pendulous,
10–15 cm, densely many small flowered; peduncle and
rachis 4–5 mm in diam.; floral bracts broadly ovate-triangular,
2–3 mm, sometimes denticulate toward apex. Flowers white,
often tinged with yellow, lip lateral lobes purplish, mid-lobe
505
white with a central purplish patch and 2 purple basal swellings,
spur white or pale green, sometimes with purplish stripes or
spots, column purplish, rostellum white; pedicel and ovary 5–8
mm. Dorsal sepal obovate-elliptic, 4.5–5.5 × 2.2–3 mm, concave,
obtuse; lateral sepals obliquely obovate, 5–6 × 2.5–4 mm,
obtuse. Petals oblong-spatulate, ca. 5 × 1.8 mm, obtuse; lip
spurred, ca. 3 mm, 3-lobed; lateral lobes erect, subquadrate, 1–
1.5 cm, obtuse to rounded; mid-lobe thickly fleshy, adaxially
slightly depressed at base and with 2 swellings partly covering
spur entrance; spur conic, laterally compressed, ca. 2 mm. Column
1–1.5 mm; rostellum ca. 0.3 mm. Fl. Dec–Feb. 2n = 30*.
● Epiphytic on tree trunks in thickets. S Taiwan.
192. PARAPTEROCERAS Averyanov, Bot. Zhurn. (Moscow & Leningrad) 75: 723. 1990.
虾尾兰属 xia wei lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood
Herbs, epiphytic, monopodial. Stems ascending or sometimes pendulous, short or elongate, enclosed in leaf sheaths. Leaves
several to many, distichous, flat, jointed and sheathing at base, apex unequally bilobed. Inflorescences lateral, arching to pendulous,
racemose, several to many flowered; peduncle and rachis ± fleshy. Flowers small. Sepals free; lateral sepals usually larger, base
adnate to column foot. Petals often smaller than sepals; lip immovably attached to end of column foot, spurred, 3-lobed; lateral lobes
on both sides of spur entrance, ascending, rather large; mid-lobe ± spreading forward, very small; spur often spreading horizontally,
almost continuing line of column foot, ± laterally compressed, narrowed toward tip, thickly walled especially near base of mid-lobe,
without appendages inside. Column short, thick, with a distinct foot; rostellum short, 2-lobed; pollinia 2, waxy, subglobose, entire,
attached by a common broad and flat stipe to a solitary viscidium.
About five species: mainly in SE Asia; one species in China.
1. Parapteroceras elobe (Seidenfaden) Averyanov, Bot. Zhurn.
(Moscow & Leningrad) 75: 723. 1990.
虾尾兰 xia wei lan
Pteroceras elobe Seidenfaden, Bot. Tidsskr. 65: 149. 1969;
Tuberolabium elobe (Seidenfaden) Seidenfaden.
Stems 2–12 cm, 4–5 mm in diam., internodes 5–8 mm.
Leaves many; leaf blade oblong or falcate-oblong, 6–17 × 1.5–
2.5 cm, acute. Inflorescences 2–8, borne opposite leaves, 8–23
cm, laxly many flowered; peduncle and rachis yellowish green,
ca. 2 mm in diam., longitudinally ribbed; rachis 4–11 cm; floral
bracts broadly ovate, ca. 1 mm. Flowers white, tinged with purplish
on lip, spur white with purplish red tip; pedicel and ovary
8–10 mm. Sepals and petals thinly textured; dorsal sepal ovateelliptic,
ca. 4.5 × 2.7 mm, obtuse; lateral sepals obovate, rather
large, ca. 5 × 3 mm, rounded. Petals obovate-elliptic, ca. 4 × 2.5
mm, obtuse; lip spurred, 3-lobed; lateral lobes ascending, suboblong,
ca. 2 × 1 mm, obtuse; mid-lobe very small, ca. 0.4 mm,
slightly fleshy, base with 2 calli on both sides; spur conic, ca.
2.5 mm, obtuse. Column ca. 1 mm, foot ca. 2.5 mm. Fl. Jul.
Epiphytic on tree trunks at forest margins; 1000–1500 m. Hainan,
S Yunnan [Thailand, Vietnam].
193. PENNILABIUM J. J. Smith, Bull. Jard. Bot. Buitenzorg, sér. 2, 13: 47. 1914.
巾唇兰属 jin chun lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood
Herbs, epiphytic, small, monopodial. Stems short, with a few close leaves. Leaves clustered, flat, elliptic to oblong, ± fleshy,
base often ± twisted, jointed and sheathing, apex unequally laterally bilobed. Inflorescence lateral, racemose, usually rather short,
unbranched, with 1 or 2 flowers open at a time, placed in 2 rows; rachis somewhat thickened and complanate; floral bracts
distichous. Flowers opening successively, lasting 1 or 2 days, white, cream-colored, yellow, or orange, medium-sized. Sepals and
petals free, similar. Petals slightly smaller, margin often dentate; lip adnate to column base, immovable, spurred, 3-lobed, internal
callosities absent; lateral lobes either rather large, well developed, and truncate or reduced to small earlike lobes, when present often