PNGTreesKey – Gyrinops ledermannii Domke


Barry Conn (NSW) & Kipiro Damas (LAE).
Guide to trees of Papua New Guinea
Copyright held by the authors, National Herbarium of New South Wales, and Papua New Guinea National Herbarium

Gyrinops ledermannii Domke

Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahlem Vol. 11: 349 (1932)

Other Literature: Ding Hou, Flora Malesiana, Series 1 41 (1960)

Family: Thymelaeaceae

Timber Group: Non-timber species

Field Characters: Small sub-canopy tree (8-20 m high); Bole cylindrical (up to c. 20 cm diam.); straight; buttresses buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark slightly white or pale brown, slightly rough, peeling (slightly (papery); less than 25 mm thick; bark blaze consisting of one layer; strongly aromatic; pleasant; outer blaze pale brown, markings absent, fibrous; inner blaze pale brown, markings absent, fibrous; terminal buds not enclosed by leaves.

Indumentum: Complex hairs absent; stinging hairs absent; mature twig indumentum (hairs) present, hairs dense to sparse (with white hairs).

Leaves: Leaves spaced along branches, spiral (leaves occurring singly at a node and arranged spirally up the branchlet), simple (a leaf composed of a single blade); petiole present, not winged, attached to base of leaf blade, not swollen; leaves sometimes broadest above middle, broadest below middle, or equally broad throughout much of length, 6.5-12.0 cm, 2.5-5.0 cm; symmetric, entire, not dissected or lobed, sub acute or acuminate, venation pinnate, secondary veins open, not prominent, but visible, intramarginal veins absent; leaves lower surface green, upper surface dark green (glossy), indumentum (hairs) absent or present, indumentum (hairs) sparse (on lower parts of both surfaces); absent; domatia absent; stipules absent.

Flowers: Inflorescence terminal, flowers arising from a single point (with 2-3 flowers), cones absent; flowers bisexual, not stalked or stalked (shortly (subsessile), flowers with many planes of symmetry, 10.0-15.0 mm long, diameter small (up to10 mm diam.) (c. 3 mm diam.); perianth present, with distinct sepals and petals whorls (petals reduced to appendages between the calyx lobes) or petals absent (by misinterpretation), inner perianth yellow or pale green; 5, free (but joined to throat of floral tube at base of calyx lobes) or some or partly joined (by misinterpretation); stamens 5, absent, free of each other, joined to the perianth (joined to floral tube); ovary superior, carpels joined (when more than one), locules 2; styles solitary, 1.

Fruits: Infrutescence arising from single point, fruit 15.0-18.0 mm long, green when immature, not spiny, non-fleshy, simple, dehiscent, capsule; seeds usually 1-2, about 10 mm long (c. 9 mm long, including appendage), not winged, broad (as wide as long), seed 1-10 mm diam. (c. 6-8 mm diam.).

Distribution: West Sepik or East Sepik.

Gyrinops ledermannii
Botanical records
in PNGplants database

Map details