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This genus is accepted, and its native range is SW. India.

[A-EM]
Morphology

Nothing is known about the pollen of Smithsonia.

General Description

Epiphytic herbs. Roots many, arising from base of stem, up to 100 or more cm long, 0.4–0.5 cm in diameter, sometimes flattened and closely adhering to trunk or branch. Stem with distichous leaves. Leaves 2–6, 2.5–10.0 × 0.5–2.4 cm, oblong to linear-oblong or elliptic-lanceolate, sometimes slightly falcate, articulate, sheathing at base, green or rarely mottled with purple or dark green, unequally or obtusely bilobed at apex with (S. straminea) or without a sharp median mucro in between. Inflorescence spreading or pendent, elongate or (sub)umbellate raceme with up to 20 flowers, 5–15 cm long, axillary; bracts 2 mm long, broadly oblong-ovate or ovatetriangular, acute or obtuse. Flowers c. 0.6–1.2 cm wide, resupinate, greenish to yellow, either with a solitary reddish brown spot (S. maculata (Dalzell) C.J.Saldanha), one or two violet spots (S. straminea) or without spots on sepals and petals, labellum white, often marked with pink or violet. Dorsal sepal obovate, obovate-oblong, or oblanceolate, often narrowed at base and gland-dotted, 3–5-veined, obtuse or acute at apex. Lateral sepals obovate or broadly obovate to obovate-oblong, narrowed at base (S. maculata) or not, 3–5-veined, gland-dotted (S. viridiflora (Dalzell) C.J.Saldanha) or not, obtuse at apex. Petals obovate, oblong or obovate-oblong, 3–5-veined, obtuse at apex. Labellum white, trilobed, shortly or deeply saccate at base, and immovably attached to column base, side lobes triangular, erect, sometimes connate below, narrow and recurved, midlobe entire or weakly trilobed; spur subconical, straight, 3–4 mm long, naked within or with a tuft of white hairs (S. maculata). Column 1–2 mm long, semi-terete, without a foot; anther conical, pollinia two, deeply and unequally cleft, stipe narrow, viscidium oblong, bifid; rostellum bilobed. Ovary with pedicel 3–7 mm long. Capsule 3–5 cm long, oblong or fusiform.

Ecology

The species of this genus occur as epiphytes at 50–950 m.

Distribution

Smithsonia is a genus of four species endemic to India (Western Ghats from Maharashtra, Karnataka, Goa, Tamil Nadu, and Kerala).

[A-EM]
Use

No uses have been recorded for Smithsonia.

Native to:

India

Smithsonia C.J.Saldanha appears in other Kew resources:

First published in J. Bombay Nat. Hist. Soc. 71: 73 (1974)

Accepted by

  • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2014). Genera Orchidacearum 6: 1-544. Oxford University Press, New York, Oxford.

Aeridinae: e-monocot.org
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Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0