Class
Order
Family
Genus
Classification
Nomenclature
Scientific Name:
Populus trichocarpa Torr. & A.Gray ex Hook., Hooker's Icon. Pl. 9, t. 878 (1851)
Vernacular Name(s):
black cottonwood; Cottonwood; Western balsam poplar
Description
Large tree, almost pyramidal when young, suckering moderately. Bark grey, fissured, peeling when young. Shoots somewhat angled, brown. Buds and very young shoots very viscid and balsam-scented, glabrous. Petioles to c. 9 cm long, terete, glabrous. Lamina to 13–(18) × 10 cm, usually deltoid-ovate or ovate, sometimes narrow-ovate, greenish white below, glabrous except for ciliolate margin, ± green when very young; veins green above; margin without translucent band, crenate-serrulate; base broad-cuneate, truncate or subcordate, usually glandless; apex acute to short-acuminate. Catkins ♂, pendulous, to c. 10 cm long. Rachis ± puberulent. Bracts 3–4 mm long excluding filiform teeth, hairy, whitish. cup-shaped disc 2–3 mm deep, oblique, glabrous. Stamens 30–90; anthers crimson.
[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]
Biostatus
Exotic
Phenology
Flowering: Sep.
Bibliography
Edwards, R. 2008: Lincoln University campus – a guide to some of the trees currently growing there. Lincoln University, Lincoln.
Hooker, W.J. 1851–1852 ("1852"): Icones Plantarum; or figures, with brief descriptive characters and remarks of new or rare plants. Vol. 9. Reeve & Co., London.
