Persicaria amplexicaulis

 

학명 : Persicaria amplexicaulis (D. Don) Ronse Decraene/(FOC) Polygonum amplexicaule D. Don

분류 :  마디풀과(Polygonaceae)

 

사진 : 2022.11.03 한택식물원

 

 

 

 

 

FOC

 

Polygonum amplexicaule D. Don, Prodr. Fl. Nepal. 70. 1825.

包茎拳参 bao jing quan shen

 

Herbs perennial. Rhizomes horizontal, purple-brown, large, ca. 1.5 cm. Stems erect, 40-100 cm tall, robust, branched. Basal leaves long petiolate; petiole 5-10 cm; leaf blade greenish abaxially, green adaxially, ovate or oblong-ovate, 4-10 × 2-5 cm, abaxially sometimes pubescent along veins, adaxially glabrous, base cordate, margin slightly revolute, apex long acuminate. Cauline leaves shortly petiolate; leaf blade narrowly ovate, smaller; uppermost leaves subsessile or clasping; ocrea brown, tubular, 2-4 cm, membranous, dehiscent at base, not ciliate. Inflorescence terminal or axillary, spicate, dense or lax, 2-4 cm, 1-1.3 cm in diam.; bracts brown, ovate, membranous, each 2- or 3-flowered. Pedicels longer than bracts, slender. Perianth red, 5-parted; tepals elliptic or narrowly elliptic, 3-5 × 1.5-2.5 mm. Stamens 8. Styles 3, free; stigmas capitate. Achenes slightly exceeding persistent perianth, black-brown, shiny, ellipsoid, trigonous, 4-5 mm, tapered at both ends.

 

Shaded grassy places in valleys, mixed forests on mountain slopes, grassy slopes, forest margins; 1000-3300 m. Gansu, Hubei, Hunan, Shaanxi, Sichuan, Xizang, Yunnan [Bhutan, India, Kashmir, Nepal, Pakistan].

 

 

 

 

 

1 Inflorescence dense; tepals ovate-elliptic to elliptic, 4-5 × 2-2.5 mm. 52a var. amplexicaule

+ Inflorescence lax; tepals narrowly elliptic, 3-4 × 1.5-2 mm. 52b var. sinense

 

 

Polygonum amplexicaule var. amplexicaule

包茎拳参(原变种) bao jing quan shen (yuan bian zhong)

 

Bistorta amplexicaulis (D. Don) Greene; B. petiolata (D. Don) V. Petrov; B. speciosa (Meisner) Greene; Persicaria amplexicaulis (D. Don) Ronse Decraene; Polygonum ambiguum Meisner; P. amplexicaule var. speciosum (Meisner) J. D. Hooker; P. oxyphyllum Wallich ex Meisner; P. petiolatum D. Don; P. speciosum Meisner.

 

Inflorescence dense. Tepals elliptic, 4-5 × 2-2.5 mm.

 

Shaded grassy places in valleys, mixed forests on mountain slopes; 1000-3300 m. Hubei, Sichuan, Xizang, Yunnan [Bhutan, India, Kashmir, Nepal, Pakistan].

 

One of us (Ohba) notes that Polygonum sinomontanum differs from this variety by its frequently branched stem in the lower part, winged and undulate petioles, and inflorescence usually flowering downward.

 

This variety is used medicinally.