泰竹Thyrsostachys siamensis
中文名（Chinese Name）：泰竹
学名（Scientific Name）：Thyrsostachys siamensis (Kurz ex Munro) Gamble
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Bambusa regia Thomson ex Munro Bambusa siamensis Kurz ex Munro Thyrsostachys regia (Thomson ex Munro) Bennet Arundinaria siamensis Kurz Arundarbor regia (Munro) Kuntze
科属（Family & Genus）：禾本科（Gramineae）泰竹属Thyrsostachys
形态特征（Description）：竿直立，形成极密的单一竹丛，高8-13米，直径3-5厘米，梢头劲直或略弯曲；节间长15-30厘米，幼时被白柔毛，竿壁甚厚，基部近实心；竿环平；节下具一圈高约5毫米之白色毛环；分枝习性甚高，主枝不甚发达；芽的长度大于宽度。箨鞘宿存，质薄，柔软，与节间近等长或略长，背面贴生白色短刺毛，鞘口作“山”字形隆起；箨舌低矮，先端具稀疏之短纤毛；箨片直立，长三角形，基部微收缩，边缘略内卷。末级小枝具4-12叶；叶鞘具白色贴生刺毛，边缘生纤毛；叶耳很小或缺；叶舌高约1毫米，上缘具纤毛；叶片窄披针形，长9-18厘米，宽0.7-1.5厘米，两表面均无毛，或幼时在下表面具柔毛，次脉3-5对。花枝呈圆锥花序状，苍白色，具多数纤细分枝，其每节丛生有少数假小穗，假小穗丛下方托以一船形、无毛、先端平截之苞片；具花小枝的节间平滑，极细，具沟槽；小穗几为白色，长1.2-1.7厘米，宽3-5毫米，含小花3朵；颖1片，长0.8-1厘米，卵形，先端尖，基部具白色长柔毛，8脉；外稃似颖，但较长，仅下方小花的先端具毛茸，下方小花的内稃形窄，具2脊，脊上生纤毛，先端深裂至中部，顶端小花的内稃无脊，先端凹缺，具二短尖头，无毛，较其外稃为长；鳞被不存在；雄蕊能伸出花外，花丝分离；子房初为卵形，后作扁形，柱头1-3，羽毛状，弯曲。颖果圆柱形，长5毫米，直径2毫米，先端具喙。
分布（Distribution）：产缅甸和泰国，马来西亚有栽培。我国台湾、福建（厦门）、广东（广州）及云南有栽培，并在云南西南部至南部较常见。
用途（Use）：
引自中国植物志英文版FOC | Family List | FOC Vol. 22 |
Thyrsostachys siamensis Gamble, Ann. Roy. Bot. Gard. Calcutta. 7: 59. 1896.
泰竹 tai zhu
Bambusa regia Thomson ex Munro, nom. rej.; Thyrso-stachys regia (Thomson ex Munro) Bennet, nom. rej.
Culms to 12 m, to 6 cm in diam.; internodes initially green, becoming gray-green, 20–30 cm; wall thick; nodes slightly thickened, with a white ring below. Branches several, main mid-culm ones to 1 cm in diam. Culm sheaths pale brown, 3/4–1 × as long as internodes, papery, appressed pubescent, margins ciliate, apex truncate; ciliate; auricles small; ligule ca. 1 mm; blade erect, base ca. 3/4 width of sheath apex. Leaf sheaths white pubescent and ciliate; ligule very short, pubes-cent; blade linear, 7.5–15 × 0.7–1.2 cm. Pseudospikelets 1.2–1.4 cm; prophylls to 0.8 cm; gemmiferous bracts 2 or 3; glumes 2 or 3; fertile florets 1–3. Fertile lemma 1–1.3 cm; palea slightly longer than lemma, narrow, bifid for 1/3 of its length; lodicules absent to 3. Anthers pale yellow, apex purple, apiculate. Ovary ovoid to turbinate; style 1, ca. 1.2 cm; stigmas 1–3. Caryopsis ca. 0.6 cm. 2n = 76*.
River valleys to hilly forested areas; 500–1000 m. S Yunnan [Myanmar, N Thailand].
This species is one of the most beautiful ornamental bamboos in the tropics of SE Asia, long cultivated in SE China, and recently found wild in Yunnan. The widespread use and economic importance of the name Thyrosostachys siamensis justified its conservation against the earlier name, Bambusa regia (1868).
（责任编辑：徐晔春）
学名（Scientific Name）：Thyrsostachys siamensis (Kurz ex Munro) Gamble
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Bambusa regia Thomson ex Munro Bambusa siamensis Kurz ex Munro Thyrsostachys regia (Thomson ex Munro) Bennet Arundinaria siamensis Kurz Arundarbor regia (Munro) Kuntze
科属（Family & Genus）：禾本科（Gramineae）泰竹属Thyrsostachys
形态特征（Description）：竿直立，形成极密的单一竹丛，高8-13米，直径3-5厘米，梢头劲直或略弯曲；节间长15-30厘米，幼时被白柔毛，竿壁甚厚，基部近实心；竿环平；节下具一圈高约5毫米之白色毛环；分枝习性甚高，主枝不甚发达；芽的长度大于宽度。箨鞘宿存，质薄，柔软，与节间近等长或略长，背面贴生白色短刺毛，鞘口作“山”字形隆起；箨舌低矮，先端具稀疏之短纤毛；箨片直立，长三角形，基部微收缩，边缘略内卷。末级小枝具4-12叶；叶鞘具白色贴生刺毛，边缘生纤毛；叶耳很小或缺；叶舌高约1毫米，上缘具纤毛；叶片窄披针形，长9-18厘米，宽0.7-1.5厘米，两表面均无毛，或幼时在下表面具柔毛，次脉3-5对。花枝呈圆锥花序状，苍白色，具多数纤细分枝，其每节丛生有少数假小穗，假小穗丛下方托以一船形、无毛、先端平截之苞片；具花小枝的节间平滑，极细，具沟槽；小穗几为白色，长1.2-1.7厘米，宽3-5毫米，含小花3朵；颖1片，长0.8-1厘米，卵形，先端尖，基部具白色长柔毛，8脉；外稃似颖，但较长，仅下方小花的先端具毛茸，下方小花的内稃形窄，具2脊，脊上生纤毛，先端深裂至中部，顶端小花的内稃无脊，先端凹缺，具二短尖头，无毛，较其外稃为长；鳞被不存在；雄蕊能伸出花外，花丝分离；子房初为卵形，后作扁形，柱头1-3，羽毛状，弯曲。颖果圆柱形，长5毫米，直径2毫米，先端具喙。
分布（Distribution）：产缅甸和泰国，马来西亚有栽培。我国台湾、福建（厦门）、广东（广州）及云南有栽培，并在云南西南部至南部较常见。
用途（Use）：
引自中国植物志英文版FOC | Family List | FOC Vol. 22 |
Thyrsostachys siamensis Gamble, Ann. Roy. Bot. Gard. Calcutta. 7: 59. 1896.
泰竹 tai zhu
Bambusa regia Thomson ex Munro, nom. rej.; Thyrso-stachys regia (Thomson ex Munro) Bennet, nom. rej.
Culms to 12 m, to 6 cm in diam.; internodes initially green, becoming gray-green, 20–30 cm; wall thick; nodes slightly thickened, with a white ring below. Branches several, main mid-culm ones to 1 cm in diam. Culm sheaths pale brown, 3/4–1 × as long as internodes, papery, appressed pubescent, margins ciliate, apex truncate; ciliate; auricles small; ligule ca. 1 mm; blade erect, base ca. 3/4 width of sheath apex. Leaf sheaths white pubescent and ciliate; ligule very short, pubes-cent; blade linear, 7.5–15 × 0.7–1.2 cm. Pseudospikelets 1.2–1.4 cm; prophylls to 0.8 cm; gemmiferous bracts 2 or 3; glumes 2 or 3; fertile florets 1–3. Fertile lemma 1–1.3 cm; palea slightly longer than lemma, narrow, bifid for 1/3 of its length; lodicules absent to 3. Anthers pale yellow, apex purple, apiculate. Ovary ovoid to turbinate; style 1, ca. 1.2 cm; stigmas 1–3. Caryopsis ca. 0.6 cm. 2n = 76*.
River valleys to hilly forested areas; 500–1000 m. S Yunnan [Myanmar, N Thailand].
This species is one of the most beautiful ornamental bamboos in the tropics of SE Asia, long cultivated in SE China, and recently found wild in Yunnan. The widespread use and economic importance of the name Thyrosostachys siamensis justified its conservation against the earlier name, Bambusa regia (1868).
（责任编辑：徐晔春）
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