Syzygium

Family Myrtaceae. Order Myrtales.

Large trees to shrubs. Buttresses present, or absent; short. Spines absent. Stilt roots present, or absent. Bark red, gray, brown; not peeling in strips. Slash orange, red. 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 present, or absent; dense, or sparse.

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

Inflorescences present, or represented by solitary flowers only (usual); terminal, or axillary, or on the trunk or branches; the flowers from a single point on the stem, or on an unbranched axis, or on a branched axis; specialized inflorescence units absent; numerous and persistent inflorescence bracts absent. Flowers bisexual; stalked; about 0.5 cm long or across, or to about 3 cm long or across, or to about 10 cm long or across; round; with male or female parts not raised on a column. Hypanthium present. Disk absent. Perianth present; with distinct calyx and corolla whorls. Sepals 4-5; free, or partially joined; persistent in fruit; not growing any further after flowering, or growing slightly after flowering. Epicalyx absent. Petals present; 4-5; free, or all joined; not fleshy; deciduous; not stalked; entire. Stamens 100 (many); filaments present; free of each other; free of the perianth; all equal in size; polystemonous. Anthers 2 loculed; attached along the side; not awned; dehiscing by long slits. Ovary partly inferior, or inferior. Carpels joined; 2(-4). Locules 2. Styles solitary. Stigmas 1 lobed; not distinctive. Fruit berry-like; fleshy; not multiple; not splitting; not enclosed in, or sitting on, fleshy perianth parts; wingless. Seeds 1(-2) per fruit; less than 5 mm, or about 1 cm long, or much more than 1 cm long; wingless; uniform in cross-section; aril absent; non-endospermic.

Leaves opposite, gland dotted, intramarginal vein present, midrib sunken above; exstipulate; stamens numerous and generally showy. Taxon images: eugenia.gif gensyzy.gif


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.