Nomenclature
Scientific Name:
Fallopia convolvulus (L.) Á.Löve (1970)
Synonymy:
  • Polygonum convolvulus L. (1753)
  • Bilderdykia convolvulus (L.) Dumort. (1827)
  • Reynoutria convolvulus (L.) Shinners (1967)
  • Tiniaria convolvulus (L.) Webb & Moq. ex Webb & Berthel.
  • Fallopia convolvulus var. subalata (Lej. & Court.) D.H.Kent (1981)
  • = Polygonum convolvulus var. subulatum Lej. & Court.
Vernacular Name(s):
Black bindweed; Cornbind
 Description

Annual, climbing, convolvulus-like herb, glabrous or finely puberulent, with slender twining stems and slender taproot. Petiole very slender, to 6 cm long. Lamina (1)–2–9 × (0.5)–1–6 cm, ± ovate-sagittate, entire; base shallowly to deeply cordate; apex acute, cuspidate or acuminate. Ochreae to c. 5 mm long, obliquely truncate, soon lacerate. Fls in terminal or axillary racemes with a slender, puberulent peduncle or in fascicles, often in axils of all but the basal lvs, ± pale green, scentless. Bracts generally = or > pedicels, membranous except for green keel. Pedicels short at anthesis, 1.5–3–(5) mm long at fruiting, articulate above middle, winged in upper part. Perianth 1–3 mm long, broad-ovate to broad-elliptic, moderately accrescent, the 3 outer segments with acute green keel and often white margins. Stamens not enclosed in perianth segments; filaments glabrous. Valves of fr. 4–6 mm long, glabrous or finely puberulent, the outer with prominent greenish white margin. Nut 3–4 mm long, black, finely granular; ribs obtuse.

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

 Biostatus
Exotic
 Phenology

Flowering: Nov.–Apr.

 Bibliography
Connor, H.E. 1977: The Poisonous Plants in New Zealand. Edition 2. Government Printer, Wellington. [as Polygonum convolvulus L.]
Freeman, C.C.; Reveal, J.L. 2005: Polygonaceae. Flora of North America Editorial Committee (ed.) Flora of North America. Vol. 5. New York and Oxford.