学名(拉丁名) | Alsophila denticulata |
中文名 | 粗齿桫椤 |
命名人 | Baker |
中文科名 | 桫椤科 |
拉丁属名 | Alsophila |
类型 | species |
拉丁科名 | Cyatheaceae |
中文属名 | 桫椤属 |
学名(拉丁名) | Alsophila denticulata |
中文名 | 粗齿桫椤 |
拉丁属名 | Alsophila |
类型 | species |
拉丁科名 | Cyatheaceae |
学名(拉丁名) | Alsophila denticulata |
中文名 | 粗齿桫椤 |
中文科名 | 桫椤科 |
拉丁属名 | Alsophila |
类型 | species |
拉丁科名 | Cyatheaceae |
中文属名 | 木沙椤属 |
学名(拉丁名) | Alsophila denticulata |
发表年份 | 1885(年) |
拉丁属名 | Alsophila |
类型 | species |
拉丁科名 | Cyatheaceae |
学名 | 状态 | 来源 | 命名人 | |
---|---|---|---|---|
Alsophila denticulata | 异名 | The Plant List | Baker | Cyathea hancockii |
Alsophila denticulata | 接受名 | 中国植物志 | ||
Alsophila denticulata | 接受名 | Flora of China |
Alsophila acaulis Makino; Cyathea hancockii Copeland; C. polyodonta Domin; Dryopteris hancockii (Copeland) Nakai; D. taitunensis Koidzumi; Gymnosphaera denticulata (Baker) Copeland; G. hancockii (Copeland) Ching ex L. K. Lin.
Rhizome prostrate or short and erect, not forming treelike trunks, bearing several fronds at apex. Fronds 2-pinnate-pinnatifid, up to 1.5 m; lowest pinnae usually reduced; stipe 30-90 cm, stipe and rachis brown to dark purple-brown, lustrous, scaly and hairy on adaxial surface; scales on rhizome and stipe base golden-yellow, concolorous, lustrous, linear, ca. 1.5 cm × 1.5 mm, base rounded, margin ciliate; lamina lanceolate, 35-50 cm; pinnae 12-16 pairs, alternate, ascending, with short stipe, oblong, middle pinnae 12-40 cm, basal pair abbreviated; pinnules 7-8 × 1.6-1.8 cm, sessile, apex acute, pinnatifid almost to costule, basal 1 or 2 pairs free; pinnule segments ascending, margin dentate; veinlets 5-7 pairs, simple or rarely forked, basal basiscopic ones arising directly from pinnule costule, costae and midveins of pinnules and segments abaxially with bullate scales, scales with prominent dark tip. Sori orbicular, medial between midvein and margin; paraphyses many, slightly longer than sporangia; indusia absent.
Valleys, margins of evergreen forests; 300-1500 m. Chongqing, Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangxi, Sichuan, Taiwan, Yunnan, Zhejiang [Japan (including Ryukyu Islands)].
9.粗齿桫椤(福建植物志)图版81:1-5
Alsophila denticulata Baker in J. Bot. 23: 102. 1885; DeVol in Li et al., Fl. Tai-wan. 1: 135. 1975; R. M. Tryon in Contr. Gray Herb. 200: 32. 1970; S. H. Kung, Fl. Sichuan. 6: 169, pl. 51, f. 1-4. 1988; Q. Xia in Acta Phytotax. Sin. 27 (1): 12. 1989. 2002; Fl. Zhejiang 1: 55, f. 1-60. 1993. ——Cyathea hancockii Copel. inPhilipp. J. Sci. Bot. 4: 37. 1909: Holttum in Kew Bull. 19: 479. 1965. ——Alsophilaacaulis Makino in Bot. Mag. Tokyo 28: 335. 1914; Nakai in Bot Mag. Tokyo 41: 70. 1927. ——Dryopteris hancockii (Copel.) Nakai in Bot. Mag. Tokyo 41: 74. 1927. Cwthea polydonta Damin, Pterid. 262. 1929. ——Gymnosphaera denticulate (Bak-er) Copel., Gen. Fil. 98. 1947; P. S. Wang et X. Y. Wang, Pterid. Fl. Guizhou: 356. 2002. ——G. hancockii (Copel.) Ching ex L. K. Lin in Fl. Fujianica, 1: 179. 1982; Fl. Jiangxi 1: 235, f. 230, 1993; W. C. Shieh in T. C. Huang, Fl. Taiwan ed. 2, 1: 145. 1994.
植株高0.6-1.4米。主干短而横卧。叶簇生;叶柄长30-90厘米,红褐色,稍有疣状突起,基部生鳞片,向疣部光滑;鳞片线形,长15毫米,宽1.5毫米,淡棕色,光亮,边缘有疏长刚毛;叶片披针形,长35-50厘米,二回羽状至三回羽状;羽片12-16对,互生,斜向疣,有短柄,长圆形,中部的羽片长12-40厘米,基部一对羽片稍缩短;小羽片长7-8厘米,宽1.6-1.8厘米,先端短渐尖,无柄,深羽裂近达小羽轴,基部一或二对裂片分离;裂片斜向疣,边缘有粗齿;叶脉分离,每裂片有小脉5-7对,单一或很少分叉,基部下侧一小脉出自主脉;羽轴红棕色,有疏的疣状突起,疏生狭线形的鳞片,较大的鳞片边缘有刚毛;小羽轴及主脉密生鳞片;鳞片顶部深棕色,基部淡棕色并为泡状,边缘有黑棕色刚毛。孢子囊群圆形,生于小脉中部或分叉疣;囊群盖缺;隔丝多,稍短于孢子囊。
产浙江(苍南、乐清、泰顺、平阳)、台湾(台北、苗栗)、福建(厦门、南平、德化、建瓯、宁阳、三明、龙岩)、江西(井冈山、安远、全南)、湖南(江华)、广东(从化)、香港、广西(武鸣、百色、大苗山、宁明)、云南(西畴、麻栗坡)、贵州(荔波)、四川(合江)、重庆(北碚)。生于山谷疏林、常绿阔叶林下及林缘沟边,海拔350-1520米。日本南部也有分布。模式标本采自我国台湾淡水。