FOC_25_Epidendroidea..

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4–6 cm × 7–12 mm, base slightly dilated, covered with membranous
tubular sheaths. Leaf blade elliptic, 20–36 × 5–12.5
cm, papery, apex shortly acuminate; petiole 9–10 cm. Inflorescence
erect; peduncle to more than 1 m, glabrous, covered
with 4 or 5 sheaths 3–5 cm; rachis to 21 cm, laxly 8–12-flowered;
floral bracts narrowly lanceolate, 1.2–1.5 cm. Flowers
white; pedicel and ovary 2–2.5 cm, slender. Dorsal sepal narrowly
oblong, 14–18 × ca. 3 mm, with inconspicuous veins,
apex slightly obtuse; lateral sepals falcate-oblong, 14–18 × 3–4
mm, with 3 inconspicuous veins, apex obtuse, base adnate to
EPIDENDROIDEAE
106. DIGLYPHOSA Blume, Bijdr. 336. 1825.
apex of column foot; mentum spurlike, ca. 4 mm. Petals similar
to lateral sepals, 13–17 × ca. 2 mm; lip obovate-cuneate, ca. 1
cm, 3-lobed; lateral lobes subovate, ca. 1 cm wide (flattened),
apex obtuse; mid-lobe broadly obovate, 4–6 × 5–7 mm, concave,
apex subtruncate; disk with 3 lamellae, median shorter.
Column ca. 1 cm, winged, with conspicuous foot; wings with 1
decurved toothlike arm on either side of middle part. Fl. Apr.
Damp rocky places along valleys or in forests; ca. 1600 m. E
Guangxi, SE Xizang [NE India, Vietnam].
密花兰属 mi hua lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood, Stephan W. Gale
Diglyphis Blume.
Herbs, terrestrial. Rhizome creeping, with long, fibrous roots. Pseudobulb persistent, narrowly conic or cylindric, with either a
solitary terminal leaf at apex or an inflorescence at base. Leaf solitary, large, plicate, papery, contracted into a long petiole-like stalk
at base. Inflorescence arising from base of pseudobulb, erect, terminal, racemose, occasionally branching in larger plants, glabrous,
with several scattered tubular sheaths; rachis densely many flowered; floral bracts reflexed, narrow. Flowers medium-sized, resupinate.
Sepals usually spreading; dorsal sepal longer than lateral sepals; lateral sepals adnate to column foot and forming a mentum.
Petals similar to but slightly wider than lateral sepals; lip slightly fleshy, hinged to apex of column foot, entire to 3-lobed, reflexed
above middle, margin suberect below middle, without a spur; disk with 2 fleshy, converging lamellae or keels. Column erect, arcuate,
slender, winged, with a simple column foot at base; anther terminal; anther cap cordate, apex conic-convex, 2-locular; rostellum short
and broad, not lobed; pollinia 2, waxy, nearly triangular, without caudicles.
Two species: tropical parts of NE India and Vietnam, through SE Asia to New Guinea; one species in China.
1. Diglyphosa latifolia Blume, Bijdr. 336. 1825.
密花兰 mi hua lan
Chrysoglossum latifolium (Blume) Bentham & J. D.
Hooker; C. macrophyllum King & Pantling; Diglyphis latifolia
(Blume) Miquel; Diglyphosa macrophylla (King & Pantling)
King & Pantling.
Plants 25–40 cm tall. Rhizome fleshy. Pseudobulb cylindric,
somewhat angular in cross section, 9–14 × 0.8–1 cm, with
caducous scales. Leaf blade broadly elliptic, plicate, 25–37 ×
11–17 cm, veins prominent abaxially, margin undulate, apex
acuminate or acute; petiole-like stalk 10–20 cm. Inflorescence
deep purple, 22–40 cm, with 3 or 4 scattered tubular sheaths;
rachis 13–20 cm, densely many flowered; floral bracts reflexed,
deep purple, narrowly ovate-lanceolate, 6–12 mm, apex acumi-
107. ARUNDINA Blume, Bijdr. 401. 1825.
竹叶兰属 zhu ye lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Stephan W. Gale
nate. Flowers fleshy, mostly opening simultaneously, orangered,
spotted with purple, omitting an unpleasant smell; pedicel
and ovary 10–14 mm, slender. Dorsal sepal narrowly oblongovate,
10–13 × 2.5–3.5 mm, 3-veined, apex acuminate; lateral
sepals oblong-ovate, falcate, 7–11 × ca. 3 mm, 3-veined, base
adnate to column foot and forming an inconspicuous mentum,
apex acuminate. Petals similar to lateral sepals, 9–13 × 3–5
mm, base adnate to column foot; lip mobile, oblong-obovate,
ca. 5 × 3 mm, fleshy, slightly constricted near middle, concave
below constriction and reflexed above, apex acute; disk with 2
fleshy lamellae extending from base of lip almost to apex,
converging into a single ridge toward base and apex. Column
ca. 5 mm; column foot ca. 2 mm; rostellum subsquare, thick. Fl.
Jun.
Damp places in forests, along valleys; ca. 1200 m. SE Yunnan
[NE India, Indonesia, Malaysia, New Guinea, Philippines].
Herbs, terrestrial. Rhizome ovoid, stout; roots many, filiform, slender, fibrous. Stem erect, tufted at base, reedlike, unbranched
or occasionally branched when older, leafy. Leaves ± distichous, linear-lanceolate, conduplicate and sheathing at base, apex acute.
Inflorescence terminal, unbranched or occasionally shortly branched, few to many flowered; floral bracts persistent, triangular, small.
Flowers resupinate, opening one at a time, large; pedicel and ovary elongate, slender. Sepals similar, elliptic or lanceolate, apex
acute; lateral sepals usually connivent below lip. Petals spreading, ovate-elliptic or obovate, apex acute; lip adnate to base of column,
obovate, not spurred, 3-lobed; disk with 3 longitudinal pubescent lamellae; lateral lobes erect, embracing column, rounded; mid-lobe
spreading, apex divided. Column long, straight, dilated and narrowly winged toward apex; anther terminal, incumbent; pollinia 8, in
2 groups, ± waxy, with short caudicles, attached to sticky viscidia; stigma transversely oblong, broad. Capsule cylindric-fusiform,
large, ridged.