Species Information - Crepidium atrobrachiatum

Crepidium atrobrachiatum (Ridl.) Szlach., Fragm. Florist. Geobot. Suppl. 3 (1995) 124

Type: Kloss s.n. (Camp 6a, 3100 ft) (holo BM)

Synonyms:

• Microstylis atrobrachiata Ridl., Trans. Linn. Soc. London, Bot. 9 (1916) 160
• Malaxis atrobrachiata (Ridl.) P.F.Hunt, Kew Bull. 24 (1970) 78
• Pseudoliparis atrobrachiata (Ridl.) Marg., Ann. Bot. Fennici 40 (2003) 63

Plants 30—35 cm tall, solitary or sometimes clustered. Rhizome short; nodes covered by loose tubular scales. Leafy stem fusiform, erect, 0.35—0.4 by (0.16—) 0.2—0.34 cm, completely covered by leaf petioles and sheaths. Leaves c. 4; petiole channeled, (0.4—) 0.8— 2(—2.4) by 0.3—0.5(—0.6) cm when spread; sheath loose, tubular, (0.06—) 0.12—0.18(—0.2) by (0.2—) 0.25—0.38(—0.42) cm; blade slightly oblique, oblong ovate to usually lanceolate, (3—) 4—5.2 by 1.2—1.8 cm, with crispate margins, and attenuate and apiculate apex, (3—)5-nerved. Inflorescence 25—28 cm long, erect; peduncle 10—13 cm long; raceme 13—15 cm tall, densely 80—100-flowered. Sterile bracts usually 1, narrowly triangular, reflexed, 0.3—0.4 by 0.09—0.16 cm. Floral bracts deflexed, narrowly triangular to lanceolate, 0.22—0.3 by 0.07—0.1 cm; apex apiculate to acuminate; 1-nerved. Flowers 0.55—0.65 cm in diam. Pedicel and ovary sinuate, 0.2—0.3 cm long. Median sepal ovate to oblong ovate, 0.28—0.31 by 0.15—0.18 cm; apex obtuse to apiculate. Lateral sepals oblique, ovate, 0.27—0.3 by 0.13—0.16 cm; apex obtuse to apiculate. Petals slightly oblique, lanceolate to narrowly elliptic, 0.22— 0.25 by 0.1—0.13 cm; apex shortly attenuate, obtuse to acute; 1-veined. Lip relatively small, sagittate to pear-shaped in outline, (0.2—) 0.27—0.29 by 0.15—0.17 cm; mid-lobe oblong, with distinctly apiculate to attenuate apex. separated from lateral lobes by a distinct, shallow indentation; lateral lobes usually convergent, semiorbicular to semiobovate, 0.05—0.06 by 0.07—0.08 cm, with obtuse apex; central part with 2 parallel, thin, longitudinal, 0.05—0.07 cm long and less than 0.1 mm high lamellae with slightly crispate marginwhich are at the base fused into a callus; basal callus triangular, 0.02—0.05 by 0.04—0.05 cm. Column erect, 0.14—0.15 by 0.03—0.06 cm, minutely papillose; staminodes
(after Hanna B. Margońska 2003)

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