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 圓錐白花葉

來自 植物智 的圖片

中文名:圓錐白花葉

拉丁學名:Poranopsis paniculata

(Roxburgh) Roberty

界:植物界

門:被子植物門

綱:木蘭綱

目:管狀花目

科:旋花科

亞 科:旋花亞科

族:旋花族

屬:飛蛾藤屬

亞 屬:飛蛾藤亞屬

種:圓錐白花葉

圓錐白花葉((yuán zhuī bái huā yè),學名:Poranopsis paniculata (Roxburgh) Roberty,俗名:圓錐飛蛾藤,異名:Porana paniculata Dinetus paniculatus  ,旋花科飛蛾藤屬攀援灌木,攀援灌木,莖密被灰色短絨毛。葉卵形,基部心形,葉面疏被背面稍密被短柔毛;掌狀脈基出,圓錐花序腋生或頂生;花較小,多數;萼片線形,花冠漏斗狀,白色,冠檐淺裂或圓齒狀,外面於瓣中帶上被短絨毛,內面無毛,雄蕊內藏,花絲近等長,與花葯等長或稍短,柱頭球狀,2裂。蒴果卵狀球形,直徑約5毫米。 產雲南西南部(盈江)。生於海拔720米的路邊灌叢中。 [1]

目錄

形態特徵

攀援灌木,莖密被灰色短絨毛。葉卵形,長4-9厘米,寬2-6厘米,先端銳尖,漸尖或具短細尖頭,基部心形,葉面疏被背面稍密被短柔毛;掌狀脈基出,5-7條,在葉背面突起;

葉柄長1.2-2.5厘米,被灰色短絨毛。圓錐花序腋生或頂生;花較小,多數;萼片線形,長約1-1.5毫米,密被短絨毛,3個在果時極增大;

花冠漏斗狀,長5-6毫米,白色,冠檐淺裂或圓齒狀,外面於瓣中帶上被短絨毛,內面無毛,或僅在裂片凹陷處具短絨毛束;雄蕊內藏,花絲近等長,與花葯等長或稍短,着生於花冠基部約同1水平面;

子房圓錐形,無毛,花柱1,很短,與子房等長或更短,柱頭球狀,2裂。蒴果卵狀球形,直徑約5毫米。

Climbers; indumentum grayish to dull yellow. Stems puberulent, glabrescent. Petiole 2.6-10.8 cm; leaf blade cordate-circular, 7.5-16.5 X 5.3-15 cm, smooth to rugulose, abaxially silvery villous. Panicle crowded; bracts cordate. Pedicel 2-4 mm, elongating in fruit. Flowers (4-)5-6(-7) mm.

Sepals lanceolate-linear, flat or concave, equal, 1-2 mm, tomentose-villous abaxially. Fruiting calyx tan, reddish, or pale brown, loosely clasping; outer 3 sepals elliptic-oblong to narrowly ovate, 1.6-2.2(-2.4) cm X 7-9 mm, puberulent, margin free. Corolla white to cream, narrowly funnelform; limb (3-)5-7 mm in diam., 5-lobed. Stamens included, ± equal; filaments glabrous.

Disc absent or ringlike. Ovary glabrous. Style obsolete; stigma subsessile. Fruit tan to brownish with darker lines, globose-ellipsoid, 5-6(-7) X 4-5 mm, pubescent, apiculate. Seeds dark brown, globose-ellipsoid, 4-6 X 3-5 mm, glabrous. Fl. Oct-Dec, fr. Mar-Apr. 2n = 26.

產地生境

雲南西南部(盈江)。生於海拔720米的路邊灌叢中。分布印度北部至緬甸北部,斯里蘭卡馬來亞

辨析

本種與搭棚藤 Porana discifera Schneid. 極近,但花柱極短,雄蕊近等長而內藏為異。

分類文獻

Porana paniculata Roxb. Hort. Beng. 13. 1814; id. Pl. Coromand. 3: 31. t. 235. 1819; id. Fl. Ind. ed. Carey et Wall. 2: 39. 1824; ed. 2, 1: 464. 1831; D. Don, Prodr. Fl. Nepal. 99. 1825; Wall. Cat. n. 1325. 1828; Choisy in Mem. Soc. Phys. Geneve 6: 489. 1833, et in DC. Prodr. 9: 436. 1845; Kurz in Journ. Bot. 11: 137. 1873, et For. Fl. Burma 2: 220. 1877; C. B. Clarke in Hook. f. Fl. Brit. Ind. 4: 222. 1883; Hook. f. in Curtis's Bot. Mag. 48. t. 7240. 1892; Dunn in Journ. Linn. Soc. Bot. 39: 479. 1911; v. Ooststr. in Blumea 3: 93. 1938, et in Fl. Males. ser. 1, 4 (4): 404. 1953. ——Dinetus paniculata Sweet, Hort. Brit. 289. 1827; ibid ed. 2, 373. 1830.

參考來源

  1. 圓錐白花葉, 植物智, 2020-01-18