帽峰椴檢視原始碼討論檢視歷史
帽峰椴 |
中文名:帽峰椴 拉丁學名:Tilia mofungensis Chun et Wong 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:原始花被亞綱 目:錦葵目 科:椴樹科 亞 科:椴樹亞科 族:椴樹族 屬:椴樹屬 組:椴樹組 |
帽峰椴(mào fēng duàn),學名:Tilia mofungensis Chun et Wong,是椴樹科椴樹屬植物。喬木;嫩枝無毛,頂芽初時有稀疏星狀茸毛,很快變禿淨。 [1]
帽峰椴形態特徵
喬木;嫩枝無毛,頂芽初時有稀疏星狀茸毛,很快變禿淨。葉近革質,卵狀長圓形,長8-12厘米,寬5-7厘米,先端短尖,基部斜心形;
單側耳形,另一側圓形,有時斜截形,上面干後橄欖褐色,稍發亮,無毛,下面被深褐色星狀茸毛,側脈8-9對,全緣,稀有小齒突;葉柄長2-2.5厘米,初時有褐色茸毛,以後變禿淨。
聚傘花序長7-10厘米,花序柄長5-8厘米,下部4-5厘米與苞片合生,常被有星狀柔毛;花柄長4-5毫米;苞片帶狀倒披針形,與花序等長,無柄;
先端鈍,上部寬1-1.2厘米,下部較狹窄,兩面均有稀疏褐色星狀茸毛。果實近球形,寬7-8毫米,被緊貼褐色柔毛。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*.
分類文獻
Tilia tuan Szyszyl. in Hook. Ic. Pl. 20: t. 1926. 1890;胡先驌、陳煥鏞, 中國植物圖譜 4:41. 圖版191. 1935; 中國高等植物圖鑑2: 795, 圖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.
帽峰椴生長環境
生長於海拔800-1000米的山地常綠林里。
帽峰椴分布範圍
江西省, 湖南省, 廣西自治區, 貴州省, 雲南省