天胡荽金腰
天胡荽金腰 |
中文學名:天胡荽金腰 拉丁學名:Chrysosplenium Hydrocotylifolium 界:植物界 門:被子植物門 科:虎耳草科 屬:金腰屬 種:天胡荽金腰 |
天胡荽金腰(tiān hú suī jīn yāo,學名 Chrysosplenium hydrocotylifolium Lévl. et Vant.,異名:Chrysosplenium esquirolii ),虎耳草科、金腰屬的一種植物,多年生草本,高約27厘米。莖通常無葉,被褐色柔毛。 [1]
目錄
天胡荽金腰形態特徵
基生葉具長柄,葉片近圓形,長2.3-8.5厘米,寬2.4-8.5厘米,先端鈍圓,邊緣波狀,或具34-37圓齒(齒先端微凹且具1疣點,齒緣具無色狹邊);
基部腎形,兩面無毛,但具褐色單寧質斑點;葉柄長2.5-14厘米,最下部具褐色長柔毛。
多歧聚傘花序長10-12厘米;花序分枝長達7.5厘米,疏生褐色柔毛;苞葉闊卵形,長0.5-1.6厘米,寬0.52-1.4厘米,邊緣具5-8圓齒,基部楔形,無毛,柄長3.5-9毫米,苞腋具褐色長柔毛;
花綠色,直徑5-6毫米;萼片在花期開展,扁圓形,長約1.8毫米,寬約2.4毫米,先端鈍圓且具1褐色疣點,無毛,但具褐色單寧質斑點;
雄蕊8,花絲長約0.3毫米;子房近下位,花柱長約0.3毫米;花盤8裂。
蒴果長5-5.5毫米,先端近平截而微凹,2果瓣近等大,喙長約0.2毫米;種子黑褐色,近卵球形,長約1毫米,具微乳頭突起,有光澤。 花果期4-7月。[2]
分類文獻
Chrysosplenium hydrocotylifolium Levl. et Vant. in Fedde Repert. Sp. Nov. 9: 441. 1911: Hara in Journ. Fac. Sci. Univ. Tokyo Bot. 7: 77. f. 16C. 1957; J. T. Pan in Acta Phytotax. Sin. 24(2): 94. 1986. ——C. esquirolii Levl. in Fedde Repert. Sp. Nov. 9: 444. 1191.
Herbs ca. 27 cm tall. Stems brown pilose, usually leafless. Basal leaves with petiole 2.5-14 cm, proximally mostly brown villous; leaf blade brown spotted, orbicular, 2.3-8.5 × 2.4-8.5 cm, both surfaces glabrous, sometimes pilose adaxially or on both surfaces, base reniform, margin undulate or 34-39-crenate, teeth narrowly colorless at margin, retuse and 1-verrucose at apex. Pleiochasium 10-12 cm; branches barely 7.5 cm, brown pilose; bracteal leaves with petiole 3.5-9 mm, brown villous at axil, leaf blade broadly ovate, 0.5-1.6 × 0.5-1.4 cm, glabrous, sometimes pilose adaxially on proximal leaves, base cuneate, margin 5-8-crenate. Flowers green, 5-6 mm in diam. Sepals spreading, brown spotted, broadly orbicular, ca. 1.8 × 2.4 mm, glabrous, apex obtuse, brown 1-verrucose. Stamens 8; filaments ca. 0.3 mm. Ovary subinferior; styles ca. 0.3 mm. Disc 8-lobed. Capsule 5-5.5 mm, apex subtruncate, retuse; carpels subequal; rostrums ca. 0.2 mm. Seeds dark brown, shiny, subovoid, ca. 1 mm, papillose. Fl. and fr. Apr-Nov.
- Forests, shaded places on limestone hills, limestone clefts; 1300-2400 m. N Guangdong, ?Guangxi, Guizhou, C and SE Sichuan, E Yunnan.
天胡荽金腰生長環境
主要生長於海拔1 300-2 400米的石灰岩隙。[3]