Bistorta officinalis

Delarbre

Fl. Auvergne ed. 2, 2: 516. 1800.

Common names: European bistort
Introduced
Basionym: Polygonum bistorta Linnaeus Sp. Pl. 1: 360. 1753
Synonyms: Bistorta major Gray Persicaria bistorta (Linnaeus) Sampaio
Treatment appears in FNA Volume 5. Treatment on page 596. Mentioned on page 594, 597.

Plants (20–) 30–100 (–120) cm; rhizomes contorted. Stems 1 (–2). Leaves: ocrea brown, cylindric, 15–50 (–70) mm, margins oblique, glabrous; petiole attached proximally to sheath 10–45 (–70) mm, prominently winged distally, 100–260 mm, wing 1–6 (–12) cm; blade lanceolate to ovate, 6–15 (–21) × 2.5–9 (–10) cm, base abruptly contracted, truncate to cuneate, often asymmetric, margins entire or obscurely and irregularly repand, usually wavy, apex acute to acuminate, rarely obtuse, abaxial face glabrous or pubescent with whitish or brownish hairs, glaucous, adaxial face glabrous, not glaucous; cauline leaves 3–6, petiolate proximally, sessile distally, gradually reduced distally, blade triangular-lanceolate to linear. Inflorescences 1, short-cylindric to ovoid, 35–65 × 12–20 mm, bulblets absent; peduncle 1–15 cm. Pedicels ascending, 1.5–7 mm. Flowers 1–2 per ocreate fascicle; perianth pink; tepals elliptic to ovate, 3–4 mm, apex obtuse; stamens exserted; anthers pink to purple. Achenes brown, 3.3–4.5 × 2.5–3 mm, shiny, smooth. 2n = 48.


Phenology: Flowering May–Aug.
Habitat: Fields, meadows
Elevation: 10-200 m

Distribution

V5 1213-distribution-map.gif

Introduced; Nfld. and Labr. (Nfld.), N.S., Maine, Mass., Vt., Europe, Asia

Discussion

Chromosome numbers of 2n = 24, 44, 46, 48, and ca. 50 have been reported for Bistorta officinalis (B. Jonsell and T. Karlsson 2000+, vol. 1). A count of 2n = 48 made by Á. Löve and D. Löve (1988) was from a plant from California; it probably was cultivated.

Selected References

None.

Lower Taxa

None.

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

... more about "Bistorta officinalis"
glaucous +, pubescent +  and glabrous +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
exserted +  and included +
3-gonous +
2.5mm;3mm +
not glaucous +  and glabrous +
pink +  and purple +
ovate +  and elliptic +
Craig C. Freeman +  and Harold R. Hinds† +
Delarbre +
truncate +  and cuneate +
Polygonum bistorta +
15 cm150 mm <br />0.15 m <br /> (21 cm210 mm <br />0.21 m <br />) +
9 cm90 mm <br />0.09 m <br /> (10 cm100 mm <br />0.1 m <br />) +
6 cm60 mm <br />0.06 m <br /> (15 cm150 mm <br />0.15 m <br />) +
triangular-lanceolate;linear +
2.5cm;9cm +
foliaceous +  and perfoliate +
scale-like +
just below the soil surface or and above the soil surface +  and spreading +
sessile +  and petiolate +
European bistort +
Nfld. and Labr. (Nfld.) +, N.S. +, Maine +, Mass. +, Vt. +, Europe +  and Asia +
10-200 m +
adnate +, connate +  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 +
Fields, meadows +
brownish +  and whitish +
compound +, branched +  and simple +
short-cylindric +  and ovoid +
nonmembranous +
sessile +  and petiolate +
deciduous +
obscurely +  and entire +
wavy +  and repand +
swollen +
partly +  and foliaceous +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
disintegrating +
deciduous +  and persistent +
cylindric +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
coriaceous +  and membranous +
anatropous +, , +  and orthotropous +
accrescent +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 cm10 mm <br />0.01 m <br /> (15 cm150 mm <br />0.15 m <br />) +
campanulate +
nonaccrescent +
fleshy +, indurate +  and membranous +
10 cm100 mm <br />0.1 m <br /> (26 cm260 mm <br />0.26 m <br />) +
Flowering May–Aug. +
(2-)3(-4)-carpellate +
Fl. Auvergne ed. +
rhizomatous +
slender;stout +
4.5 cm45 mm <br />0.045 m <br /> (7 cm70 mm <br />0.07 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Introduced +
5 (?) +  and 8 (?) +
2 +  and 3 +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
connate +  and distinct +
spreading;erect +
Bistorta major +  and Persicaria bistorta +
Bistorta officinalis +
Bistorta +
species +
monomorphic +  and petaloid +
elliptic +  and ovate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
6 cm60 mm <br />0.06 m <br /> (12 cm120 mm <br />0.12 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +