FOC_25_Epidendroidea..

3. Ascocentrum pumilum (Hayata) Schlechter, Repert. Spec.
Nov. Regni Veg. Beih. 4: 285. 1919.
尖叶鸟舌兰 jian ye niao she lan
Saccolabium pumilum Hayata, Bot. Mag. (Tokyo) 20: 77.
1906; Ascolabium pumilum (Hayata) S. S. Ying.
Stems erect, 1.5–2 cm, 2–3 mm in diam., usually with 5–7
leaves. Leaves distichous; leaf blade green or sometimes
brownish green, terete, 3–8 cm × 1.5–3 mm, fleshy, channeled
above. Inflorescence axillary, erect, to 4 cm, 3–10-flowered;
peduncle and rachis slender; floral bracts lanceolate or ovate-
EPIDENDROIDEAE
503
lanceolate, 3.5–5 mm, membranous. Flowers small, not opening
widely, pink, lip lateral lobes yellowish, spur greenish, tinged
with purple, column red; pedicel and ovary 6–10 mm. Sepals
and petals similar, oblong-lanceolate, 4–7 × 2–3 mm, obtuse;
lip spurred, 3-lobed; lateral lobes erect, yellowish, suborbicular,
ca. 1 mm; mid-lobe ovate, 4–5 × 3–4 mm, acute or apiculate;
spur nearly parallel to ovary, straight, cylindric, 5–6 × ca. 0.5
mm. Column ca. 2 mm. Fl. Dec–Feb. 2n = 38*.
● Epiphytic on tree trunks in broad-leaved evergreen forests;
1000–2000 m. Taiwan.
188. PENKIMIA Phukan & Odyuo, Orchid Rev. 114: 330. 2006.
Chenorchis Z. J. Liu, K. W. Liu & L. J. Chen.
心启兰属 xin qi lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood
Herbs, epiphytic, monopodial, small. Stems rather short, enclosed in leaf sheaths, rooting near base. Leaves many, distichous,
subterete and channeled above, jointed and sheathing at base. Inflorescence from basal portion of stem, racemose, many flowered.
Flowers small. Sepals and petals somewhat similar; lip adnate to base of column, immobile, 3-lobed, spurred; lateral lobes from both
lower sides of mid-lobe; spur cylindric, unornamented inside. Column short, footless; rostellum large, subsquare, conspicuously
broader than column; pollinia 2, waxy, each with a distinct caudicle attached to subterminal portion of a common linear stipe; viscidium
subelliptic, slightly broader than stipe.
One species: China, NE India.
Penkimia may be related to Ascocentrum and Holcoglossum. Chenorchis singchii was described as a new genus and species by Liu et al. (Acta
Ecol. Sin. 28: 2433–2444. Jun 2008). Its holotype (Yunnan: Tengchong, Wuhe, 1650 m, 16 Feb 2008, Z. J. Liu 3862, NOCC) is from the same area as
the first Chinese gathering of P. nagalandensis (Yunnan: Tengchong, Wuhe, 2000 m, 15 Mar 2007, X. H. Jin 8923, PE) reported five months after the
publication of Chenorchis by Jin and Fan (Acta Bot. Yunnan. 30: 531–532. Oct 2008). Penkimia was described as a new genus in 2006 and therefore
has priority.
1. Penkimia nagalandensis Phukan & Odyuo, Orchid Rev.
114: 331. 2006.
心启兰 xin qi lan
Chenorchis singchii Z. J. Liu, K. W. Liu & L. J. Chen.
Stems erect or ascending, 2–2.5 cm × 3–4 mm, with 2–6
leaves. Leaves fleshy; blade 2–18 cm × 2.5–3.5 mm. Inflorescences
1 or 2, arching or pendulous, 3–4.5 cm, with 2–10
flowers; rachis clavate, 2–3 mm thick; floral bracts ovate, 2.5–3
mm, membranous. Flowers purple-red, tinged with yellowish or
pale yellow, not fully opening; pedicel and ovary 6–8 mm.
Sepals and petals suboblong to ovate-elliptic, 2.5–3.5 × 1.2–1.7
mm, petals slightly smaller than sepals; lip 3-lobed; lateral
lobes ovate-elliptic, 1.7–2 × 0.9–1.1 mm; mid-lobe orbicular,
concave, 2–2.5 mm, emarginate at apex; spur cylindric, 2–2.3
mm, parallel to ovary, slightly curved toward end. Column ca. 1
mm; rostellum ca. 1.4 mm wide; pollinia subglobose; caudicles
very short; stipe ca. 1.3 mm. Fl. Feb–Mar.
Epiphytic on tree trunks or branches in broad-leaved forests;
1600–2000 m. W Yunnan (Tengchong: Gaoligong Shan) [NE India
(Assam)].
189. MICROTATORCHIS Schlechter in K. Schumann & Lauterbach, Nachtr. Fl. Schutzgeb.
Südsee, 224. 1905.
拟蜘蛛兰属 ni zhi zhu lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood
Herbs, small, monopodial, epiphytic herbs similar in habit to Taeniophyllum. Roots photosynthetic, usually well developed,
radiately spreading, stout. Stems very short. Leaves distichous, small, few, basal, articulate to sheath, sometimes absent or only
present in growing season. Inflorescences lateral, racemose, gradually elongating; peduncle and rachis narrowly winged; peduncle
with many foliaceous persistent sterile bracts; rachis angled, several flowered; floral bracts persistent, alternate, distichous; sterile
and floral bracts usually with stipulelike appendages on both sides decurrent to form wings on peduncle and rachis. Flowers very
small, not opening widely. Sepals and petals similar, fused at base forming a short tube; lip entire or 3-lobed, with a subapical
introrse bristlelike appendage, base with a short, saccate spur. Column short, footless; pollinia 2, waxy, globose, entire, attached by a
common stipe to a large viscidium.