Persicaria wallichii

Greuter & Burdet

Willdenowia 19: 41. 1989.

Common names: Himalayan knotweed Kashmir plume
Introduced
Basionym: Polygonum polystachyum Wallich ex Meisner in N. Wallich, Pl. Asiat. Rar. 3: 61. 1832,
Synonyms: Aconogonon polystachyum (Wallich ex Meisner) M. Král Pleuropteropyrum polystachyum (Wallich ex Meisner) Munshi & G. N. Javied Reynoutria polystachya (Wallich ex Meisner) Moldenke Rubrivena polystachya (Wallich ex Meisner) M. Král
Treatment appears in FNA Volume 5. Treatment on page 581. Mentioned on page 481, 574.

Distribution

V5 1190-distribution-map.gif

B.C., Calif., Mass., Oreg., Asia

Discussion

Varieties 2 (1 in the flora).

Persicaria wallichii is an ornamental that escapes infrequently in the flora area. A population in Nova Scotia apparently was ephemeral. Plants with leaf blades sparsely to densely pubescent abaxially and pedicels glabrous are var. wallichii, to which naturalized North American plants appear to be referable. Plants with leaf blades brownish-tomentose abaxially and pedicels usually pubescent are var. tomentosa S. P. Hong, which may be in cultivation in North America.

Selected References

None.

"/2" is not declared as a valid unit of measurement for this property.

... more about "Persicaria wallichii"
dark-brown;black +
exserted +  and included +
spheroidal +, 2-3-gonous +, biconvex +  and discoid +
red +, pink +  and yellow +
elliptic +  and ovate +
Harold R. Hinds† +  and Craig C. Freeman +
Greuter & Burdet +
cordate to truncate +
Polygonum polystachyum +
lanceolate;elliptic-lanceolate +
lunate +, triangular +  and dark +
foliaceous +  and perfoliate +
scale-like +
just below the soil surface or and above the soil surface +  and spreading +
Himalayan knotweed +  and Kashmir plume +
B.C. +, Calif. +, Mass. +, Oreg. +  and Asia +
adnate +, connate +  and distinct +
heterostylous +
disarticulating +  and solid +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
nonmembranous +
sessile +  and petiolate +
deciduous +
swollen +
reddish +, brown +  and tan +
disintegrating +
deciduous +  and persistent +
scabrous +  and variously pubescent +
coriaceous +  and chartaceous +
anatropous +, , +  and orthotropous +
accrescent +
spreading;erect +
purple;red;purple;red;roseate;greenish white;white +
nonaccrescent +  and accrescent +
not auriculate +
(2-)3(-4)-carpellate +
Willdenowia +
slender;stout +
Introduced +
unarmed +  and branched +
scandent +  and prostrate +
pubescent +  and glabrous +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
deciduous +
connate +  and distinct +
spreading;erect +
Aconogonon polystachyum +, Pleuropteropyrum polystachyum +, Reynoutria polystachya +  and Rubrivena polystachya +
Persicaria wallichii +
Persicaria sect. Rubrivena +
species +
0 +  and 1/5 +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
stoloniferous +, rhizomatous +, fibrous-rooted +  and taprooted +
annual +  and perennial +
12 +, 11 +  and 10 +