小叶龙竹Dendrocalamus barbatus

中文名(Chinese Name):小叶龙竹
学名(Scientific Name):Dendrocalamus barbatus Hsueh et D. Z. Li
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Sellulocalamus bambusoides
科属(Family & Genus):禾本科(Gramineae)牡竹属Dendrocalamus
形态特征(Description):竿高15-18米,直径10-15厘米,梢端弯或微下垂,基部数节环生气根;节间的下部深绿色,长26-32厘米,一侧扁平部分无毛,上部具少量白粉,竿壁厚2-2.5厘米;竿环不隆起,节内长1.5厘米,在其间和箨环下方均具一圈白色绒毛环。枝下高0.5-1米。竿每节分多枝,主枝3条,其中1条明显较粗壮,或有时主枝不发达而有一大型潜伏芽,侧枝纤细,下垂。箨鞘早落性,革质,初期为黄棕色,背部被白粉和生成棕色小刺毛;箨耳与箨片基部之外延部分相连,波状,长5-15毫米,宽2-3毫米,其上密被长为1厘米的猪鬃状繸毛;箨舌高5-8毫米,先端具不整齐的齿裂;箨片外翻,腹面的基部也密被猪鬃状硬直毛,其余部位被小刺毛。末级小枝具8-15叶;叶鞘被微毛;叶耳微小,易落,其上具繸毛数条;叶舌高1毫米;叶片长10-15厘米,宽1-2厘米,次脉5或6对。花枝无叶,节间长1.5-1.8厘米,一侧扁平或具沟槽,其间密被黄棕色绒毛,每节着生10-25枚假小穗,其簇团的直径为1-2.2厘米;小穗倒卵形,长6-8.5毫米,宽2-4毫米,黄绿色,近于无毛,含小花2朵;颖2或3片;外稃长6-7毫米,宽4-5毫米,先端具长为0.8-1毫米的芒刺状小尖头;内稃长5-6毫米,两脊间宽1毫米,具3脉;花丝长6毫米,花药黄色或干后带紫色,长亦为6毫米,先端具尖头;雌蕊全长6-7.5毫米,子房上部连同花柱及柱头均被毛茸。果实未见。花期6-10月。
分布(Distribution):本种在云南东南至西南海拔360-1100米分布,但均是栽培。
用途(Use):
引自中国植物志英文版FOC Vol. 22 Page 40, 41
Dendrocalamus barbatus Hsueh & D. Z. Li, J. Bamboo Res. 7(4): 4. 1988.
小叶龙竹 xiao ye long zhu | Poaceae  | Dendrocalamus
Culms 15–18 m, 10–15 cm in diam., tip slightly drooping; internodes 26–32 cm; wall thick. Branches several, main mid-culm ones 3. Culm sheaths deciduous, orange-brown, ca. 3/4 as long as internodes, leathery, margins ciliate, apex rounded; auricles 5–15 mm; oral setae present or absent; ligule 5–8 mm, serrulate; blade reflexed, glabrous or densely bearded at base. Leaf sheaths sparsely hairy; auricles inconspicuous, sparsely hairy; ligule ca. 1 mm; blade narrowly lanceolate, 10–15 × 1–2 cm. Pseudospikelet clusters 1–2.2 cm in diam. Spikelets 6–8.5 mm, nearly glabrous; fertile florets usually 2. Glumes 2 or 3; lemma 6–7 mm, apex shortly mucronate; palea 5–6 mm. Anthers yellow, becoming purple when dry, ca. 6 mm. Pistil 6–7.5 mm; ovary, style, and stigma all hairy; stigmas solitary. Fruit unknown.
* Mostly in cultivation; 300–1100 m. S Yunnan.
小叶龙竹Dendrocalamus barbatus

小叶龙竹Dendrocalamus barbatus(责任编辑:徐晔春)

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