Species Information - Peristylus norumbus

Peristylus norumbus Ormerod, Orchadian 17 (2012) 139, fig.

Type: G. Weiblin, M. Evans, B. Isua & S. Majneb 1016 (holo A; iso LAE).

Synonyms:

Terrestrial herb. Roots terete, pubescent, to 0.2 cm thick. Stem terete, erect, 3 leaved apically, grey-green, 38.5-47.0 by 0.20-0.45 cm thick; sheaths tubular, 4-7, the upper one sometimes forming a small subfoliose blade (3 by 1.45 cm wide). Leaves obovate-elliptic, oblong-elliptic to ovate- lanceolate, acute to subacuminate, yellow-green above, bluish grey-green below, 51.4-81.6 cm ¡ong; peduncle 17.8-34.7 cm long; sheathing bracts 3-6 or more, 1 .0-4.2 cm long; rachis sublaxly many-flowered, grey mid-green, 33.6- 46.9 cm long; floral bracts lanceolate, acute, grey mid-green, to 14 mm long, 4 mm wide. Pedicel and ovary cylindric fusiform, grey mid-green, 12 mm long; capsules thickly fusiform, green, to 16 mm long, 3.5 mm thick. Flowers resupinate, pale yellow-green, spur and median sepal slightly darker green distally. Median sepal ovate- elliptic, obtuse, carinate, concave, 2.5-3.0 mm long, 2 mm wide. Lateral sepals ovate-elliptic from a clawed base, carinate, lower 1 mm connate to sides of lip, c. 3.5 mm long, 1.75 mm wide. Petals obliquely widely ovate, obtuse, 2-nerved, connate to sides of column, 3.3 mm long, 2.4 mm wide. Lip 3-lobed, spurred, free part c. 3 mm long, joined to column for 1.4 mm; spur narrowly clavate to fusiform, subacute to obtuse, 5.00-6.75 mm long, 1.2 mm thick; midlobe ovate, subacute to obtuse, fleshy, thickened basally, 1.9 mm long, 1.75 mm wide; lateral lobes ligulate-Ianceolate, acute to obtuse, forming an acute angle with midlobe, 2.75-3.00 mm long, 0.40-0.75 mm wide. Column short, stout, c. 1.5 mm long (to tips of stigma arms).
(after Ormerod 2012)

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