Species Information - Crepidium umbonatum

Crepidium umbonatum (Schltr.) Szlach., Fragm. Florist. Geobot. Suppl. 3 (1995) 133

Type: Schlechter 18631 (holo B, lost)

Synonyms:

• Microstylis umbonata Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1911) 113
• Malaxis umbonata (Schltr.) P.F.Hunt, Kew Bull. 24 (1970) 85
• Pseudoliparis umbonata (Schltr.) Szlach. & Marg., Adansonia 21 (1999) 277

Plant (10—)15—27 cm tall, slender, often several clustered. Rhizome short, creeping; ?nodes 2—5.3 mm long, 2.8—4 mm diam., internode 3.4—4.6 mm; scale leaves lax. Leafy stem erect to ascending,., partly covered by leaf petioles and sheaths, 1.5—3 by 0.3—1 cm. Leaves 4—6; leaf sheath (0.4—)0.7—1.7 by 0.4—1.2 cm; petiole erect, (0.3—)0.5—1.3 by 0.2—0.6 cm wide when spread; leaf blade oblique, elliptic, attenuate, (1.2—)3.5—5 by (0.8—)1.5—2 cm; base cuneate to nearly obcordate; apex acuminate; 3—5-nerved. Inflorescence densely 20-40-flowered, slender, 10—14 cm long; peduncle 3—5 cm long; raceme 6—9 cm long. Sterile bract usually 1, recurved, lanceolate, attenuate, 0.6—0.7 by 0.11—0.14 cm; apex acuminate; 1-nerved. Floral bracts recurved, lanceolate, 0.25—0.6 by 0.07—0.12 cm; apex acuminate; 1-nerved. Pedicel 0.24—0.3 cm long; ovary 0.16—0.2cm long; sinuate. Flowers about 0.65—0.8 by 0.4—0.5 cm wide. Median sepal ovate to oblong-ovate, 0.39—0.42 by 0.15—0.18 cm; apex subapiculate to obtuse; median nerve thicker in apical half. Lateral sepals oblique, ovate to broadly elliptic, 0.35—0.38 by 0.2—025 cm; base slightly obcordate; apex obtuse to subacute; median nerve thick. Petals usually bent back- wards, linear to linear-oblanceolate. 0.34—0.36 by 0.05—0.15 cm; apex obtuse. Lip elliptic to obovate in outline, widest slightly above its base, 0.37—0.42 by 0.3—0.35 cm; lamina semi-orbicular in distal part, 0.2—0.22 by with distinctly apiculate apex, lamellae nearly stretching to lamina apex, simple, subparallel, 0.19—0.22 by 0.025—0.04 cm high, 0.025—0.045 cm thick, area between lamellae flat and narrow; auricles obliquely triangular, 0.17—0.2 by 0.08—0.12 cm; apices subparallel, obtuse to subacute. Column bent backwards, minutely papillose, 0.15—0.16 by 0.1—0.13 cm; in upper half with a small, erect, cone-like appendage 0.01-0.02 by 0.04—0.05 cm; staminodes oblong, longer than the anther, 0.05—0.06 by 0.04-0.05 cm wide base, with entire distal margins, its top transversely truncate, folded back from the anther. Anther 0.04—0.05 by 0.035—0.04 cm wide. Fruit oblong-elliptic to oblong-obovate, 0.8—1.2 mm long, 0.4—0.5 mm.
(after Margonska, 2005)

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