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帽峰椴

来自 植物智 的图片

中文名:帽峰椴

拉丁学名:Tilia mofungensis

Chun et Wong

界:植物界

门:被子植物门

纲:双子叶植物纲

亚 纲:原始花被亚纲

目:锦葵目

科:椴树科

亚 科:椴树亚科

族:椴树族

属:椴树属

组:椴树组

帽峰椴(mào fēng duàn),学名:Tilia mofungensis Chun et Wong,是椴树科椴树属植物。乔木;嫩枝无毛,顶芽初时有稀疏星状茸毛,很快变秃净。 [1]

帽峰椴形态特征

乔木;嫩枝无毛,顶芽初时有稀疏星状茸毛,很快变秃净。叶近革质,卵状长圆形,长8-12厘米,宽5-7厘米,先端短尖,基部斜心形;

单侧耳形,另一侧圆形,有时斜截形,上面干后橄榄褐色,稍发亮,无毛,下面被深褐色星状茸毛,侧脉8-9对,全缘,稀有小齿突;叶柄长2-2.5厘米,初时有褐色茸毛,以后变秃净。

聚伞花序长7-10厘米,花序柄长5-8厘米,下部4-5厘米与苞片合生,常被有星状柔毛;花柄长4-5毫米;苞片带状倒披针形,与花序等长,无柄;

先端钝,上部宽1-1.2厘米,下部较狭窄,两面均有稀疏褐色星状茸毛。果实近球形,宽7-8毫米,被紧贴褐色柔毛。果期11月。

Trees 10-20 m tall. Bark gray, longitudinally exfoliate; branchlets glabrous or tomentose; terminal bud glabrous or hairy. Petiole 1-6 cm, glabrous or tomentose; leaf blade narrowly ovate or ovate-oblong to ovate-orbicular, 6.5-17 × 3.5-11 cm, abaxially glabrous to densely shortly gray-white or brown tomentose, adaxially glabrous, lateral veins 3-11 pairs, base oblique, rounded, truncate, or cordate, margin entire or with a few minute teeth near apex or prominently dentate, apex acuminate or acute.

Cymes 3-22-flowered, 5-14 cm, glabrous or hairy. Bracts band-shaped to oblanceolate, 6-16 × 1-3 cm, adnate to peduncle for ca. 1/2 of length, stellate pilose or tomentose to glabrous, base cuneate to rounded, apex obtuse to acuminate, sessile or stalk 0.5-0.8 cm. Pedicel 4-9 mm, glabrous or tomentose.

Sepals ovate to ovate-lanceolate, 4-6 mm, abaxially puberulent, adaxially villous at base, margin densely hairy. Petals 6-8 mm, glabrous, shortly clawed. Stamens 35-50, in 5 fascicles, glabrous; staminodes 5, oblanceolate, prominently keeled.

Ovary ovoid, densely gray-white stellate tomentose; style 3-4 mm, glabrous. Fruit globose or obovoid-globose, not ridged, 7-11 × 7-9 mm, brown or gray hairy, verrucose; exocarp woody, hard, indehiscent. Fl. Jun-Jul, fr. Jul-Nov. n = 82*.

分类文献

Tilia tuan Szyszyl. in Hook. Ic. Pl. 20: t. 1926. 1890;胡先骕、陈焕镛, 中国植物图谱 4:41. 图版191. 1935; 中国高等植物图鉴2: 795, 图3319. 1972.——T. tuan Szyszyl. var. cavaleriei V. Engl. et Levl. in Fedde, Rep. Sp. Nov. 6: 266. 1909.——T. tuan Szyszyl. var. cavoleriei V. Engl. et Levl. f. divaricata V. Engl. Monogr. Tilia. 124. 1909.——T. tuan Szysayl. var. pruinosa V. Engl. l. c. 1909.

帽峰椴生长环境

生长于海拔800-1000米的山地常绿林里。

帽峰椴分布范围

江西省, 湖南省, 广西自治区, 贵州省, 云南省

参考来源

  1. 帽峰椴, 植物智, 2020-01-18