Scientific Name:
Populus L., Sp. Pl. 1034 (1753)
Vernacular Name(s):
Aspen; Cottonwood; Poplar

Trees with pale, ± furrowed bark. Winter buds with several imbricate scales. Lvs alternate; petiole usually long; stipules inconspicuous, caducous; lamina lanceolate-ovate to broad-ovate or deltoid, sometimes lanceolate in juvenile lvs, entire or dentate. Catkins pendulous, appearing before lvs. Fls anemophilous, each subtended by a bract; bract usually laciniate or toothed, rarely entire, quickly shrivelling. Perianth reduced to a cupular, oblique disc; glands 0. ♂ fls with 4-many stamens; filaments ± filiform; anthers generally red to purple, occasionally yellow. ♀ fls with short style; stigmas 2–4. Capsule 2–(4)-valved, often ripe before lvs are fully mature. Seeds numerous, minute.

[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]

Number of species and named hybrids in New Zealand within Populus L.
Exotic: Fully Naturalised8
Exotic: Casual1
Linnaeus, C. 1753: Species Plantarum. Impensis Laurentii Salvii, Stockholm.
Mabberley, D.J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. Edition 3. Cambridge University Press.