笔竹Pseudosasa viridula S. L. Chen et G. Y. Sheng
笔竹Pseudosasa viridula S. L. Chen et G. Y. Sheng
21.笔竹(浙江俗名)图版200
Pseudosasa viridula S. L. Chen et G. Y. Sheng in Bull. Bot. Res. 11(4): 6, 7, 1991.
竿直立,高约4米,粗约1厘米;节间长(10) 13-15厘米,圆筒形,在分枝的近基部处稍扁,纵肋较明显,被白粉,中空,髓充实,海绵状;节被白粉,老竿的节则变为黑色;竿环稍隆起;节内长约6毫米;箨环具一圈箨鞘基部木栓质残留物;竿每节分1-3枝,枝贴竿,惟竿中部以上则每节全为3分枝,二级分枝每节仅1枝。笋淡棕色或绿色;箨鞘迟落,坚纸质,绿色,干后呈枯黄色,有明显和不明显的浅褐色稀疏小斑点,背部被散生刺毛和白色细短绒毛,惟在下部毛少或几乎无毛,边缘密生纤毛,先端平截;箨耳圆点状至椭圆状,棕色,其边缘有密的放射状伸展的曲繸毛,后者长5-10毫米;箨舌拱形,高约1.5毫米,稍粗糙,边缘生短纤毛;箨片直立,长三角状披针形,绿色,边缘带紫色,先端长渐尖,基部略向内收窄,宽为箨鞘顶端2/3或3/4,纵脉和小横脉明显,两边缘均具细锯齿。小枝具(2) 4-5 (7)叶,叶鞘背面有稍密的细刺毛和白粉,边缘有较长的纤毛,尤以嫩时明显,老后纤毛脱落;叶耳缺,但鞘口有7至10多数条繸毛;叶舌极短,微粗糙;叶片淡绿色,长圆状披针形,长8-30厘米左右,宽2-3.3厘米,先端急尖,基部宽楔形,上表面无毛,下表面的1/3边无毛,其余部分密被短柔毛,边缘有细锯齿,次脉(5) 7-10对。花枝未见。笋期5月。
产浙江杭州。生于坡地或平原路边。模式标本采自杭州植物园。
本种枝叶层次分明,叶片较大而色泽嫩绿,适于庭园布置。
形态特征:竿直立,高约4米,粗约1厘米;节间长(10)13-15厘米,圆筒形,在分枝的近基部处稍扁,纵肋较明显,被白粉,中空,髓充实,海绵状;节被白粉,老竿的节则变为黑色;竿环稍隆起;节内长约6毫米;箨环具一圈箨鞘基部木栓质残留物;竿每节分1—3枝,枝贴竿,惟竿中部以上则每节全为3分枝,二级分枝每节仅1枝。笋淡棕色或绿色;箨鞘迟落,坚纸质,绿色,干后呈枯黄色,行明显和不明显的浅褐色稀疏小斑点,背部被散生刺毛和白色细短绒毛,惟在下部毛少或几乎无毛,边缘密生纤毛,先端平截;箨耳圆点状至椭圆状,棕色,其边缘有密的放射状伸展的曲继毛,斤者K长5-10毫米;箨舌拱形,高约1.5毫米,稍粗糙,边缘生短纤毛;箨片直立,长三角状披针形,绿色,边缘带紫色,先端长渐尖,基部略向内收窄,宽为箨鞘顶端2/3或3/4,纵脉和小横脉明显,两边缘均具细锯齿。小枝具(2)4---5(7)叶,叶鞘背面有稍密的细刺毛利白粉,边缘有较长的纤毛,尤以嫩时明显,老后纤毛脱落;叶耳缺,但鞘门有7至10多数条缝毛;叶舌极短,微粗糙;叶片淡绿色,长圆状披针形,长8—30厘米左有,宽2—3.3厘米.先端急尖,基部宽楔形,上表面无毛,下表面的1/3边无毛,其余部分密被短柔毛,边缘有细锯齿,次脉(5)7—10对。花枝未见。笋期5月。
用 途:本种枝叶层次分明,叶片较大而色泽嫩绿,适于庭园布置。
产地分布:产浙江杭州。生于坡地或平原路边。模式标本采自杭州植物园。
参考文献:PseudosasaviridulaS.L.ChenetG.Y.ShenginBull.Bot.Res.11(4):6,7,1991.
《Flora of China》 Vol. 22 (2006)
Pseudosasa viridula S. L. Chen & G. Y. Sheng
笔竹 bi zhu
Culms ca. 4 m, ca. 1 cm in diam.; internodes striate, terete, 10–15 cm, basally slightly flattened above branches, glaucous, pith spongy; nodes weakly prominent; intranode ca. 6 mm; sheath base persistent, glaucous at nodes, dark brown when old. Culm sheaths late deciduous, light brown, sparsely spotted, leathery, sparsely setose and pubescent, margins densely ciliate; auricles brown, circular to elliptic, small; oral setae radiate, curved, 5–10 mm; ligule arcuate, ca. 1.5 mm, scabrid, ciliolate; blade triangular-lanceolate, base slightly constricted, 2/3–3/4 as wide as sheath apex, margin serrulate, apex acuminate. Leaves (2–)4 or 5(–7) per ultimate branch; sheath setose, glaucous, margins ciliolate; auricles absent; oral setae 7–10; ligule very short, slightly scabrous; blade oblong-lanceolate, 8–30 × 2–3.3 cm, abaxially partially densely hairy, secondary veins (5–)7–10-paired, base broadly cuneate, margins serrulate, apex acute. Inflorescence unknown. New shoots May.
* Plains. Zhejiang (Hangzhou).
This species is possibly a synonym of Pseudosasa hindsii.
科名:禾本科 Gramineae
属名:矢竹属 Pseudosasa
《中国植物志》第9(1)卷656页
21.笔竹(浙江俗名)图版200
Pseudosasa viridula S. L. Chen et G. Y. Sheng in Bull. Bot. Res. 11(4): 6, 7, 1991.
竿直立,高约4米,粗约1厘米;节间长(10) 13-15厘米,圆筒形,在分枝的近基部处稍扁,纵肋较明显,被白粉,中空,髓充实,海绵状;节被白粉,老竿的节则变为黑色;竿环稍隆起;节内长约6毫米;箨环具一圈箨鞘基部木栓质残留物;竿每节分1-3枝,枝贴竿,惟竿中部以上则每节全为3分枝,二级分枝每节仅1枝。笋淡棕色或绿色;箨鞘迟落,坚纸质,绿色,干后呈枯黄色,有明显和不明显的浅褐色稀疏小斑点,背部被散生刺毛和白色细短绒毛,惟在下部毛少或几乎无毛,边缘密生纤毛,先端平截;箨耳圆点状至椭圆状,棕色,其边缘有密的放射状伸展的曲繸毛,后者长5-10毫米;箨舌拱形,高约1.5毫米,稍粗糙,边缘生短纤毛;箨片直立,长三角状披针形,绿色,边缘带紫色,先端长渐尖,基部略向内收窄,宽为箨鞘顶端2/3或3/4,纵脉和小横脉明显,两边缘均具细锯齿。小枝具(2) 4-5 (7)叶,叶鞘背面有稍密的细刺毛和白粉,边缘有较长的纤毛,尤以嫩时明显,老后纤毛脱落;叶耳缺,但鞘口有7至10多数条繸毛;叶舌极短,微粗糙;叶片淡绿色,长圆状披针形,长8-30厘米左右,宽2-3.3厘米,先端急尖,基部宽楔形,上表面无毛,下表面的1/3边无毛,其余部分密被短柔毛,边缘有细锯齿,次脉(5) 7-10对。花枝未见。笋期5月。
产浙江杭州。生于坡地或平原路边。模式标本采自杭州植物园。
本种枝叶层次分明,叶片较大而色泽嫩绿,适于庭园布置。
形态特征:竿直立,高约4米,粗约1厘米;节间长(10)13-15厘米,圆筒形,在分枝的近基部处稍扁,纵肋较明显,被白粉,中空,髓充实,海绵状;节被白粉,老竿的节则变为黑色;竿环稍隆起;节内长约6毫米;箨环具一圈箨鞘基部木栓质残留物;竿每节分1—3枝,枝贴竿,惟竿中部以上则每节全为3分枝,二级分枝每节仅1枝。笋淡棕色或绿色;箨鞘迟落,坚纸质,绿色,干后呈枯黄色,行明显和不明显的浅褐色稀疏小斑点,背部被散生刺毛和白色细短绒毛,惟在下部毛少或几乎无毛,边缘密生纤毛,先端平截;箨耳圆点状至椭圆状,棕色,其边缘有密的放射状伸展的曲继毛,斤者K长5-10毫米;箨舌拱形,高约1.5毫米,稍粗糙,边缘生短纤毛;箨片直立,长三角状披针形,绿色,边缘带紫色,先端长渐尖,基部略向内收窄,宽为箨鞘顶端2/3或3/4,纵脉和小横脉明显,两边缘均具细锯齿。小枝具(2)4---5(7)叶,叶鞘背面有稍密的细刺毛利白粉,边缘有较长的纤毛,尤以嫩时明显,老后纤毛脱落;叶耳缺,但鞘门有7至10多数条缝毛;叶舌极短,微粗糙;叶片淡绿色,长圆状披针形,长8—30厘米左有,宽2—3.3厘米.先端急尖,基部宽楔形,上表面无毛,下表面的1/3边无毛,其余部分密被短柔毛,边缘有细锯齿,次脉(5)7—10对。花枝未见。笋期5月。
用 途:本种枝叶层次分明,叶片较大而色泽嫩绿,适于庭园布置。
产地分布:产浙江杭州。生于坡地或平原路边。模式标本采自杭州植物园。
参考文献:PseudosasaviridulaS.L.ChenetG.Y.ShenginBull.Bot.Res.11(4):6,7,1991.
《Flora of China》 Vol. 22 (2006)
Pseudosasa viridula S. L. Chen & G. Y. Sheng
笔竹 bi zhu
Culms ca. 4 m, ca. 1 cm in diam.; internodes striate, terete, 10–15 cm, basally slightly flattened above branches, glaucous, pith spongy; nodes weakly prominent; intranode ca. 6 mm; sheath base persistent, glaucous at nodes, dark brown when old. Culm sheaths late deciduous, light brown, sparsely spotted, leathery, sparsely setose and pubescent, margins densely ciliate; auricles brown, circular to elliptic, small; oral setae radiate, curved, 5–10 mm; ligule arcuate, ca. 1.5 mm, scabrid, ciliolate; blade triangular-lanceolate, base slightly constricted, 2/3–3/4 as wide as sheath apex, margin serrulate, apex acuminate. Leaves (2–)4 or 5(–7) per ultimate branch; sheath setose, glaucous, margins ciliolate; auricles absent; oral setae 7–10; ligule very short, slightly scabrous; blade oblong-lanceolate, 8–30 × 2–3.3 cm, abaxially partially densely hairy, secondary veins (5–)7–10-paired, base broadly cuneate, margins serrulate, apex acute. Inflorescence unknown. New shoots May.
* Plains. Zhejiang (Hangzhou).
This species is possibly a synonym of Pseudosasa hindsii.