Eusideroxylon

Family Lauraceae. Order Laurales.

Large trees to small trees. Buttresses present, or absent; short. Spines absent. Stilt roots absent. Bark brown; not peeling in strips. Slash brown. Vertical stripes in the inner bark or wood absent. Odor absent. Exudate absent. Terminal buds not enclosed by leaves.

Complex hairs absent. Stinging hairs absent. Mature twig indumentum absent.

Leaves spiral; not scale-like; simple; all of the same type; not modified into spines; coriaceous, or leathery; gland-dotted; symmetric at the base; not dissected; smooth margined. Epidermis not waxy. Venation pinnate. Secondary veins open; prominent. Smallest veins prominent, or not prominent, but visible; ladder like. Intramarginal vein absent. Stalk of blade less than a quarter the length of the blade; winged; attached to base of leaf blade; not swollen. Stipules absent. Domatia absent. Basal glands absent. Hairs on mature leaf absent.

Inflorescences present; axillary; on a branched axis; specialized inflorescence units absent; numerous and persistent inflorescence bracts absent. Flowers bisexual; stalked; about 0.5 cm long or across; round; with male or female parts not raised on a column. Hypanthium absent. Disk absent. Perianth present; with all whorls looking like tepals. Tepals 6. Stamens 3; filaments present; free of each other; free of the perianth; all equal in size; number of stamens not a multiple of the adjacent perianth whorl. Anthers 4 loculed; not awned; dehiscing by valves. Ovary superior, or partly inferior. Carpels solitary; 1. Locules 1. Styles solitary. Stigmas 1 lobed; not distinctive. Fruit berry-like; non-fleshy; not multiple; not splitting; enclosed in, or sitting on, the fleshy perianth (wholly); wingless. Seeds 1 per fruit; about 1 cm long, or much more than 1 cm long, or more than 10 cm long; wingless; uniform in cross-section; aril absent; non-endospermic.

Light to dark brown bark, peeling in small flakes; wood dark brown and extremely hard; leaves flushing red; venation system open; fruit long- ellipsoid, hard; 3 fertile stamens in one whorl.


Cite this publication as: Jarvie, J.K. and Ermayanti (1996 onwards). `Tree Genera of Borneo - Descriptions and Illustrations' URL http://django.harvard.edu/users/jjarvie/Borneo.htm/.
Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993) should also be cited.