Platylepis A.Rich.
  • A.Rich., M?m. Soc. Hist. Nat. Paris 4: 34 (1828)


This is a synonym of Goodyerinae Klotzsch.

General Description

Terrestrial herb, stems creeping at the base, roots tomentose.Leaves ovate, petiolate, sheathing at the base.Upper stem with leaves reduced to sheaths; inflorescence terminal, racemose.Bracts conspicuous, broad, glandular-hairy, longer than the ovaries.Sepals free; petals partly joined to dorsal sepal; lip adnate to the column for part of its length, reflexed at the apex, saccate at the base, with calli of various shapes.Column elongate; clinandrium and anther erect, oblong; rostellum erect, 2-lobed, set in front of the anther.Stigma oblong.

{i}Sepals{/i} subequal, narrow, free, connivent round the column; lateral united at the base into a very short chin. {i}Petals{/i} narrow, slightly cohering with the dorsal sepal into a hood. {i}Lip{/i} sessile at the base of the column, erect, channelled, broadly ventricose at the base, cohering with the margins of the column; limb very little dilated, shorter than the sepals. {i}Column{/i} elongated, subterete; anther-bed oblong, erect behind the rostellum. {i}Anther{/i} erect, acuminate, as long as the rostellum; cells distinct; pollinia 2, sectile or granular, adhering to the lobes of the rostellum. {i}Stigma{/i} broad, papillose; rostellum erect, 2-lobed, with lanceolate acuminate lobes. {i}Capsules{/i} oblong, shortly contracted at the apex.

Terrestrial herbs; stem creeping at base, with tomentose roots. Leaves ovate, petiolate, sheathing at the base. Inflorescence terminal; scape with several sheaths; raceme few–many-flowered, short or long, narrow or wide; bracts conspicuous, often broad and glandular-pilose, longer than the ovaries. Sepals free; petals connivent with the dorsal sepal. Lip erect, adnate to the column for part of its length, saccate at the base with variously shaped calli, and reflexed at the apex. Column elongate; rostellum erect; bilobed; clinandrium and anther oblong, erect behind the rostellum; stigma papillose. Capsules oblong.

Terrestrial or occasionally lithophytic herbs. Rhizome of few to many intern odes of equal length. Stem with a few scattered to subrosulate leaves. Leaves with a short- to long-petiolate base dilating into a tubular, amplexicaul sheath; lamina obliquely oblong to elliptic. Inflorescence glabrous to pubescent; peduncle with a few scattered sheathing bracts; floral bracts glabrous, prominent, ovate-elliptic, often longer and broader than pedicel plus ovary. Flowers resupinate, usually not widely opening, the outer surfaces of the sepals glabrous to minutely pubescent. Lateral sepals free, hardly to obliquely spreading, equal in length to dorsal sepal, enclosing base of labellum. Petals membranous, linear-ligulate, usually obliquely dilated rhombically toward apex, upper margin adnate to dorsal sepal. Labe!!um attached to one-third to one-half of column margins, subpanduriform, sometimes bilamellate; hypochile semi-globose to bisaccate, each side containing one to few sometimes cristate appendages or rarely with a transverse line of calli; mesochile 1-2 times length of hypochile, semitubular to inflated; epichile to a third the length of the lip, usually less, entire. Column usually slender, semi-terete and dilated near apex, rarely with a short serni-terete base then dilated; anther narrowly cordate-ovoid, biloculate; pollinia attenuating into slender stalks that merge and are ensheathed apically where attached to the viscidium; rostellum deltoid, remnant deeply bifid; stigma lobes connate. Ovary cylindric-fusiform, glabrous to pubescent, twisted. Capsule not seen. (PO, PC).

Sepals subequal, narrow, free, connivent round the column; lateral united at the base into a very short chin. Petals narrow, slightly cohering with the dorsal sepal into a hood. Lip sessile at the base of the column, erect, channelled, broadly ventricose at the base, cohering with the margins of the column; limb very little dilated, shorter than the sepals. Column elongated, subterete; clinandrium oblong, erect behind the rostellum. Anther erect, acuminate, as long as the rostellum; cells distinct; pollinia sectile or granular, adhering to the lobes of the rostellum. Stigma broad, papillose; rostellum erect, bilobed, with lanceolate, acuminate lobes. Capsules oblong, shortly contracted at the apex. —Terrestrial herbs, with creeping rhizomes, and ascending leafy stems. Leaves petiolate, ovate or ovate-lanceolate, membranous. Flowers narrow, shortly pedicelled, arranged in dense spikes. Bracts ovate.

Ecology

Species occur on the floor of shady rain forest, dense scrub, and humus-covered rocks from sea level to 1800 m. (PO, PC).

Distribution

About 15-20 species in tropical Africa, the Comoro Islands, Madagascar, the Mascarenes, the Seychelles, the Moluccas, New Guinea, Palau Islands (Caroline Islands), the Solomon Islands, Vanuatu, New Caledonia, Samoa, and Tahiti. (PO, PC).

Uses

None recorded. (PO, PC).

Literature

in Mém. Soc. Hist. Nat. Paris 4: 34 (1828), nom. conserv.

in Mém. Soc. Hist. Nat. Paris 4: 34 (1828); F.T.A. 7: 184. Nom. cons.

Benth. et Hook. f. Gen. Pl. iii. 604.

in Mém. Soc. Hist. Nat. Paris 4: 34 (1828), nom. conserv.

Distribution Map

 
  • Native distribution
Found in
  • Africa East Tropical Africa Tanzania
  • Uganda
  • Northeast Tropical Africa Ethiopia
  • Sudan
  • South Tropical Africa Angola
  • Malawi
  • Mozambique
  • Zambia
  • Zimbabwe
  • Southern Africa KwaZulu-Natal
  • West Tropical Africa Benin
  • Ghana
  • Guinea
  • Guinea-Bissau
  • Ivory Coast
  • Liberia
  • Nigeria
  • West-Central Tropical Africa Cameroon
  • Central African Republic
  • Congo
  • Equatorial Guinea
  • Gulf of Guinea Is.
  • Zaire
  • Western Indian Ocean Madagascar
  • Mauritius
  • Réunion
  • Seychelles
  • Asia-Tropical Malesia Maluku
  • Papuasia New Guinea
  • Pacific South-Central Pacific Society Is.
  • Southwestern Pacific New Caledonia
  • Samoa
  • Vanuatu
  • Wallis-Futuna Is.

  Bibliography

 Information From

Flora of Tropical East Africa
http://apps.kew.org/efloras/
Flora of Tropical East Africa. Published on the Internet; http://apps.kew.org/efloras/
Flora of West Tropical Africa
http://apps.kew.org/efloras/
Flora of West Tropical Africa. Published on the Internet; http://apps.kew.org/efloras/
Flora of Tropical Africa
http://apps.kew.org/efloras/
Flora of Tropical Africa. Published on the Internet; http://apps.kew.org/efloras/
Flora Zambesiaca
http://apps.kew.org/efloras/
Flora Zambesiaca. Published on the Internet; http://apps.kew.org/efloras/
Flora Capensis
http://apps.kew.org/efloras/
Flora Capensis. Published on the Internet; http://apps.kew.org/efloras/
WCS higher taxonomy
  • F All Rights Reserved
World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
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