《中国植物志》|| 蓼科 POLYGONACEAE ||拳参组 Sect. Bistorta (Adans.) D. Don ||密穗蓼 Polygonum affine D. Don

59．密穗蓼 图版11：1-3
Polygonum affine D. Don, Prodr. Fl. Nep. 70. 1825; Hook. f. Fl. Brit. Ind. 5: 33. 1886; Stew. in Contr. Gray Herb. 88: 28. 1930;西藏植物志1: 610. 1983.——P. donianum Spreng. Syst. Veg. 4 (2): 154. 1827.——Bistorta affinis (D. Don) Greene, Leafl. 1: 21. 1904; Hara, Enum. Flow. Pl. Nep. 3: 173. 1982.
半灌木，根状茎木质，横走，枝直立，草质，高10-15厘米，无毛，密集成簇生状。基生叶倒披针或披针形，长5-10厘米，宽1-1.8厘米，近革质，顶端急尖，基部狭楔形，上面绿色，下面灰绿色，两面无毛，中脉粗壮，边缘外卷，叶柄短；茎生叶2-3, 较小，近无柄；托叶鞘膜质，筒状，长1.5-3厘米，具数条粗脉，无毛，顶端偏斜，无缘毛。总状花序呈穗状，顶生，直立，紧密，粗壮，长3-6厘米，直径1-1.5厘米；苞片膜质，卵形；花梗稍粗壮，比苞片稍长；花被5深裂，紫红色，花被片倒卵形，长约4毫米；雄蕊8, 花药紫色；花柱3, 基部合生，柱头头状。瘦果椭圆形，两端尖，具3棱，长约3毫米，深褐色，有光泽，包于宿存花被内。花期7-8月，果期8-9月。
产西藏（米林、朗县、聂拉木、吉隆）。生山坡石缝、山坡草地，海拔4000-4900米。分布于尼泊尔、印度西北部、巴基斯坦、克什米尔地区及阿富汗。

《Flora of China》|| Polygonaceae || Polygonum ||密穗拳参 Polygonum affine

59. Polygonum affine D. Don, Prodr. Fl. Nepal. 70. 1825.

密穗拳参 mi sui quan shen

Bistorta affinis (D. Don) Greene; Persicaria affinis (D. Don) Ronse Decraene; Polygonum donianum Sprengel.

Subshrubs 10-15 cm tall. Rhizomes horizontal, ligneous. Branches densely tufted, terete, herbaceous, glabrous. Basal leaves shortly petiolate; leaf blade gray-green abaxially, green adaxially, oblanceolate or lanceolate, 5-10 × 1-1.8 cm, subleathery, both surfaces glabrous, midvein large, base narrowly cuneate, margin revolute, apex acute. Cauline leaves subsessile, smaller; ocrea brown, tubular, ca. 1 cm, membranous, veins numerous, glabrous, apex oblique, not ciliate, usually lacerate. Inflorescence terminal, spicate, erect, dense, large, 3-6 cm, 1-1.5 cm in diam.; bracts ovate, membranous. Pedicels longer than perianth. Perianth purple-red, 5-parted; tepals obovate, ca. 4 mm. Stamens 8; anthers purple. Styles 3, connate at base; stigmas capitate. Achenes included in persistent perianth, dark brown, shiny, ellipsoid, trigonous, ca. 3 mm, base narrowly cuneate, apex acute. Fl. Jul-Aug, fr. Aug-Sep.

Grassy slopes, rocky fissures; 4000-4900 m. Xizang [NW India, Kashmir, Nepal, Pakistan, Sikkim].