纤脉桉 xian mai an

Trees, to 15 m tall. Bark dark gray, rough, fibrous, persistent. Branchlets basally terete, apically ridged. Young leaves shortly petiolate; leaf blade broadly lanceolate, 8-10 × 2.5-3.5 cm. Mature leaves with a 1-2 cm petiole; leaf blade lanceolate, 10-17 × 2-3 cm, slightly twisted, leathery, both surfaces with numerous small glands, secondary veins 1.5-2 mm apart and at an angle of ca. 45° from midvein, intramarginal veins very near margin. Inflorescences terminal or sometimes axillary, paniculate, umbels 3-6-flowered; peduncle 6-9 mm, terete. Flower buds spindle-shaped, ca. 10 × 5 mm. Hypanthium obconic to campanulate, 4-6 mm; stipe 2-8 mm; calyptra awl-shaped, as long as hypanthium, apex slightly acute. Stamens distinct, ca. 5 mm; anthers globose reniform, poricidal near apex. Capsule cup-shaped, 8-10 mm; disk broad; valves 3 or 4, included or slightly exserted from hypanthium. Fl. Dec.

Cultivated in Guangdong, Guangxi, and Jiangxi [native to NE Australia].