馬關崖爬藤
馬關崖爬藤 |
中文學名:馬關崖爬藤 二名法:Tetrastigma venulosum C. Y. Wu 界:植物界 門:被子植物門(Angiospermae) 綱:木蘭綱 亞 綱:薔薇亞綱(Rosidae) 目:葡萄目 科:葡萄科(Vitaceae) 亞 屬:崖爬藤亞屬 種:馬關崖爬藤 |
馬關崖爬藤(mǎ guān yá pá téng,學名 Tetrastigma venulosum C. Y. Wu),木質藤本植物,小枝圓柱形,顯著具縱棱紋,無毛。花期6月。產於雲南海拔約1600米地區。 [1]
目錄
馬關崖爬藤形態特徵
木質藤本。小枝圓柱形,細瘦,顯著具縱棱 紋,無毛。
葉為3小葉,小葉卵狀長橢圓形,最寬處在葉片下部,長14.5-15.5厘米,寬5.5-6厘米,頂端驟尾尖,基部圓形,上面綠色,下面淺綠色,兩面均無毛;
側脈9-10對,網脈上面突出,下面明顯但不突出;葉柄長5.5-7厘米,中央小葉柄長約2.5厘米,側生小葉柄長1-1.5厘米,無毛;托葉早落3厘米;
花序梗長1.7厘米,微被乳突狀柔毛;花梗長1-1.5毫米,被乳突狀柔毛;花蕾卵橢圓形,高2-2.5毫米;萼杯形,萼齒不整齊,外面被乳突狀柔毛;
花瓣4,橢圓形,頂端有外展的小角狀突起,無毛;雄蕊4,在雌花內花絲退化,殘存小型不發育的花葯;
花盤在雌花中發達,波狀淺裂;子房與花盤合生,花柱短,柱頭微4裂。花期6月。 [2]
Tetrastigma venulosum C. Y. Wu in Chin. J. Appl. Environ. Biol. 1 (4) : 320. 1995.
Lianas, woody. Branchlets terete, slender, with conspicuous longitudinal ridges, glabrous. Leaves 3-foliolate; stipules caducous; petiole 5.5-7 cm; central petiolule ca. 2.5 cm, lateral petiolules 1-1.5 cm, glabrous; leaflets ovate-elliptic, 14.5-15.5 × 5.5-6 cm, glabrous, lateral veins 9 or 10 pairs, abaxially veinlets distinct but not raised, adaxially raised, base rounded, apex cuspidate. Compound dichasium, axillary, ca. 3 cm; peduncle ca. 1.7 cm, slightly papillose. Pedicel 1-1.5 mm, papillose. Buds ovoid-elliptic, 2-2.5 mm. Calyx cupular, papillose, teeth irregular. Petals elliptic, corniculate, glabrous. Filaments abortive and anther sterile in female flowers. Disk well developed in female flowers, undulately lobed. Lower part of ovary adnate to disk; style short; stigma 4-lobed. Fl. Jun.
● Forests; ca. 1600 m. Yunnan.
馬關崖爬藤生長環境
生長於海拔約1600米的林中。