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Dinghushan | Family List | Poaceae | Bambusa

Bambusa pervariabilis McClure

撑篙竹

Description from Flora of China

Culms 7–10 m, 4–5.5 cm in diam., basally straight, apex suberect; internodes straight, ca. 30 cm, basal internodes with yellow-green stripes, initially thinly white powdery or strigose; nodes slightly prominent, basal nodes with rings of gray-white silky hairs below and above sheath scar; branching from basal node up. Branches several to many, clustered, with central 3 dominant. Culm sheaths deciduous, initially with yellow-green stripes, thinly leathery, abaxially glabrous or sometimes strigose, apex asymmetrically arched; auricles unequal, undulate, wrinkled; larger auricle slanted along 1/6–1/5 of sheath margin, obovate-oblong to oblanceolate, 3.5–4 × ca. 1 cm, attenuate; smaller auricle suborbicular or elliptic, ca. 1.5 × 0.8 cm; oral setae fine, undulate; ligule 3–4 mm, irregularly dentate or sometimes laciniate, shortly fimbriate; blade deciduous, erect, nearly symmetrical, initially abaxially yellow-green striped, narrowly ovate-acuminate, base rounded and then extending outward and joined with auricles for 3–7 mm, nearly 2/3 width of sheath apex. Leaf blade linear-lanceolate, usually 10–15 × 1–1.5 cm, abaxially densely pubescent, adaxially glabrous. Pseudospikelets linear, 2–5 cm, gemmiferous bracts 2 or 3; florets 5–10; rachilla segments ca. 4 mm. Glume 1, oblong, ca. 6 mm, 9-veined, glabrous, apex acute; lemmas oblong-lanceolate, 1.2–1.4 cm, glabrous, 13–15-veined, apex acute; palea nearly as long as or slightly shorter than lemma, ciliolate toward apex, 6-veined between and 3-veined on either side of keels; lodicules 3, unequal; anterior 2 oblique, ca. 2.7 mm, margins long ciliate, posterior larger, obovate-oblong, ca. 3 mm. Filaments short; anthers ca. 5 mm. Ovary ellipsoid, ca. 1 mm, apex hispidulous; style ca. 1 mm, hispidulous; stigmas 3, ca. 3 mm, hairy. Young caryopsis broadly ovoid, ca. 1.5 mm, apex hispidulous, remains of style base persistent.

Two varieties may be recognized in China. In addition, Bambusa pervariabilis var. multistriata W. T. Lin (J. Bamboo Res. 16(3): 25. 1997) was described from cultivated, sterile material from Guangdong (Guangzhou).

* River banks, around villages. Guangdong, Guangxi.

生活型: 乔木

栽培植物: 栽培

特征: 乔木型,丛生;

生境: 栽培

用途: 竹材坚实,供棚架、撑船、农具柄等用

门中名: 种子植物门

亚门中名: 被子植物亚门

纲中名: 单子叶植物纲


 

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