All Floras      Advanced Search
FNA Vol. 5 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 5 | Polygonaceae | Aconogonon

2. Aconogonon phytolaccifolium (Meisner ex Small) Small in P. A. Rydberg, Fl. Rocky Mts. 1061. 1917. (as Aconogonum phytolaccaefolium).

Poke knotweed

Polygonum phytolaccifolium Meisner ex Small, Bull. Torrey Bot. Club 19: 360. 1892

Plants (50-)70-150(-200) cm. Stems erect, glabrous or pubescent. Leaves: ocrea reddish brown, funnelform, 1-3 cm, margins oblique, glabrous or pubescent; petiole 5-20 mm; blade lanceolate to ovate-lanceolate, 5-15(-19) × 1.4-7.5 cm, not subcoriaceous, base rounded, margins entire, usually scabrous to ciliate, rarely glabrous, apex obtuse to acuminate, faces not glaucous, glabrous or densely pubescent. Inflorescences usually terminal, subterminal, and axillary, paniclelike; peduncle 0.5-12 cm, glabrous or pubescent. Pedicels 0.9-4 mm. Flowers 1-3 per ocreate fascicle, rarely some flowers with stamens poorly developed; perianth white to greenish white, 2.5-3.5 mm; tepals slightly dimorphic, ovate to obovate, apex obtuse; anthers yellow to pink. Achenes usually exserted, yellowish brown, not beaked distally, (3-)3.8-7 × 2.3-4.8 mm, shiny, faces concave.

Varieties 2 (2 in the flora): w United States.

1 Stems glabrescent or pubescent; leaf blade mar-gins scabrous to ciliate   2a var. phytolaccifolium
+ Stems glabrous; leaf blade margins glabrous   2b var. glabrum


Related Objects Image Gallery 
  • Distribution Map
  • Map
  • Distribution Map
  • Map

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |