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alpine fleeceflower, alpine knotweed, poke knotweed, pokeweed fleeceflower, pokeweed knotweed

Habit 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.

Aconogonon phytolaccifolium

Distribution
from FNA
CA; ID; MT; NV; OR; WA
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Stems glabrescent or pubescent; leaf blade margins scabrous to ciliate
var. phytolaccifolium
1. Stems glabrous; leaf blade margins glabrous
var. glabrum
Source FNA vol. 5, p. 599.
Parent taxa Polygonaceae > subfam. Polygonoideae > Aconogonon
Sibling taxa
A. alaskanum, A. davisiae
Subordinate taxa
A. phytolaccifolium var. glabrum, A. phytolaccifolium var. phytolaccifolium
Synonyms Polygonum phytolaccifolium
Name authority (Meisner ex Small) Small: in P. A. Rydberg, Fl. Rocky Mts., 1061. (1917)
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