Polygonum plebeium

R. Brown

Prodr., 420. 1810.

Treatment appears in FNA Volume 5. Treatment on page 556. Mentioned on page 548, 549.

Plants bluish green, homophyllous. Stems prostrate, much-branched from base, not wiry, 10–40 cm, papillose-scabridulous. Leaves: ocrea 1-veined, 2.5–3 mm, proximal part cylindric, distal part laciniate; petiole 0–1 mm; blade bluish green, narrowly elliptic or oblanceolate, 5–16 × 1–4 mm, margins flat, apex obtuse or acute, papillose-scabridulous; stem-leaves 1–1.5 (–2) times longer than adjacent branch leaves, distal leaves overtopping flowers. Inflorescences axillary; cymes uniformly distributed, 3–6-flowered. Pedicels exserted from ocreae, 3–5 mm. Flowers closed; perianth 1–1.5 mm; tube 12–27% of perianth length; tepals overlapping, green with white or pink margins, petaloid, not keeled, elliptic, cucullate; midveins unbranched, thickened; stamens 5. Achenes enclosed in perianth, black-brown, broadly ovate, 2–3-gonous, 1.5–2 mm, faces subequal, apex not beaked, edges concave, shiny, smooth; late-season achenes common, 2–4 mm. 2n = 20.


Phenology: Flowering May–Oct.
Habitat: Disturbed sites
Elevation: 50-500 m

Distribution

V5 1135-distribution-map.gif

Introduced; Idaho, e Africa, s Asia, Australia

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Polygonum plebeium"
black-brown +
exserted +  and included +
dull +  and shiny +
smooth;roughened +
2-3-gonous +  and ovate +
whitish yellow +
elliptic +  and oblong +
papillose-scabridulous +
acute;obtuse +
Mihai Costea +, François J. Tardif +  and Harold R. Hinds† +
R. Brown +
not stipelike +
bluish green +
0.5 cm5 mm <br />0.005 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
oblanceolate;elliptic +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
foliaceous +  and perfoliate +
scale-like +
just below the soil surface or and above the soil surface +  and spreading +
3-6-flowered +
distributed +
Idaho +, e Africa +, s Asia +  and Australia +
concave +
50-500 m +
subequal +
adnate +, free +  and distinct +
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 +
Disturbed sites +
compound +, branched +  and simple +
nonmembranous +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
sessile +  and petiolate +
deciduous +
pink +  and white +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
swollen +
silvery +, white +  and hyaline +
disintegrating +
deciduous +  and persistent +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
coriaceous +  and membranous +
somewhat larger +
anatropous +, , +  and orthotropous +
erect;spreading +
accrescent +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
spreading;erect +
greenish white;pink +
campanulate +  and urceolate +
nonaccrescent +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
fleshy +, indurate +  and membranous +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Flowering May–Oct. +
(2-)3(-4)-carpellate +
slender;stout +
woody +  and fibrous +
1-1.5(-2) times longer than adjacent branch leaves +
not wiry +  and much-branched +
straight +
ascending +  and erect +
papillose-scabridulous +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
2 +  and 3 +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
connate +  and distinct +
spreading;erect +
Polygonum plebeium +
Polygonum sect. Polygonum +
species +
overlapping +
connate +  and distinct +
cucullate +  and not keeled +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
not cushionlike +