Classification
Class
Magnoliopsida Brongn.
Order
Fabales Bromhead
Family
Leguminosae
Genus
Robinia L.
 Nomenclature
Scientific Name:
Robinia pseudoacacia L., Sp. Pl. 722 (1753) – as Pseudo Acacia
Vernacular Name(s):
Bastard acacia; Black locust; False acacia
 Description

Deciduous tree, to 25 m high; twigs puberulent when young, angled, usually with stout scattered stipular spines up to c. 1 cm long. Lvs glabrous to puberulent particularly below, petiolate; leaflets ovate to elliptic, acute or obtuse, sometimes shortly mucronate, in 4–10 ± opposite pairs, (10)–20–40–(50) mm long, stipellate; petiolules 2–5 mm long. Raceme with numerous fls; pedicels 5–10 mm long. Calyx puberulent; calyx teeth unequal, broadly triangular. Corolla white with the base of standard greenish or yellowish, 15–23 mm long. Pod glabrous, irregularly oblong, 2–8-seeded, 35–80 mm long; seeds smooth, brown- spotted, oblong.

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

 Biostatus
Exotic
 Phenology

Flowering: Nov.–Jan.

 Bibliography
Connor, H.E. 1977: The Poisonous Plants in New Zealand. Edition 2. Government Printer, Wellington.
Howell, C. 2008: Consolidated list of environmental weeds in New Zealand. DOC Research & Development Series 292: 42.
Linnaeus, C. 1753: Species Plantarum. Impensis Laurentii Salvii, Stockholm.
Stewart, J. 1971: Plants in New Zealand Poisonous to Man. New Zealand Department of Health, Wellington.
Wilcox, M.D. 2012: Auckland's Remarkable Urban Forest. Auckland Botanical Society Bulletin 29: [1]–[348].
Weeds Key – interactive key to the weed species of New Zealand