上思卷花丹
上思卷花丹 |
中文學名:上思卷花丹 界:植物界 門:被子植物門 綱:雙子葉植物綱 目:桃金娘目 科:野牡丹科 |
上思卷花丹(學名:Scorpiothyrsus shangszeensis)為野牡丹科卷花丹屬下的一個種。 [1]
目錄
上思卷花丹形態特徵
直立亞灌木,高0.5-1米;小枝鬆散,幼時四棱形,具槽,密被腺毛及柔毛,基部呈圓柱形,近無毛,木質化。
葉片紙質或近膜質,卵形或廣卵形,頂端漸尖,基部心形,長7-14厘米,寬4.5-9毫米,邊緣具細齒或近全緣,齒尖具刺毛及緣毛,9基出脈,最外側2條細且緊靠邊緣,兩面被疏糙伏毛及疏微柔毛,葉面脈平整,背面脈隆起,明顯,脈上毛較多,細脈與側脈垂直,互相平行;葉柄長4-10.5厘米,密被腺毛及柔毛。
由蠍尾狀聚傘花序組成圓錐花序,頂生,鬆散,長約8.5厘米,寬約6厘米或略寬,總梗、花梗、花萼均被腺毛及柔毛;花梗長約1.5毫米,花萼鐘形,具四棱,長約4毫米,萼管長約2.5毫米,裂片狹披針形,長約1.5毫米;花瓣白色或粉紅色,扁圓形或廣卵形,頂端圓形或短急尖,長4.5-7毫米,寬約5毫米;雄蕊長4.5-5.5毫米,花葯長2-2.5毫米,基部具2刺毛,毛長1-2毫米,藥隔微膨大,無距;子房半下位,扁球形,無冠,無毛。
蒴果(未熟)扁球形,為宿存萼所包;宿存萼扁球形,具四棱,頂端平截,具8脈,被腺毛及柔毛,直徑約2.5毫米,高約2毫米。
花期5-6月,果期6-7月。
Scorpiothyrsus shangszeensis C. Chen,植物研究, 4 (3): 63. 1984.
Shrublets, erect, 50-100 m tall. Branches spreading, woody, basally terete but apically 4-sided, with dense glandular trichomes and pilose but glabrescent. Petiole 4-10.5 cm, with dense glandular trichomes and pilose; leaf blade ovate to broadly ovate, 7-14 cm × 4.5-9 mm, papery or stiffly papery, both surfaces sparsely strigose and puberulous, secondary veins 4 on each side of midvein, base cordate, margin ciliate and denticulate to subentire with each tooth having a terminal seta, apex acuminate. Inflorescences terminal, scorpioid cymose panicles, ca. 8.5 × 6 cm, spreading. Pedicel ca. 1.5 mm, with glandular trichomes and pilose. Hypanthium campanulate, 4-sided, ca. 2.5 mm, with glandular trichomes and pilose. Calyx lobes narrowly lanceolate, ca. 1.5 mm. Petals white or pink, oblong to broadly ovate, 4.5-7 × ca. 5 mm, apex rounded to shortly acute. Stamens 4.5-5.5 mm; anther 2-2.5 mm, base 2-setose; connective minutely inflated. Ovary half inferior, ovoid, not crowned, glabrous. Capsule ovoid; hypanthium ca. 2 × 2.5 mm, 4-sided, 8-ribbed, with glandular trichomes and pilose, apex truncate. Fl. May-Jun, fr. Jun-Jul.
上思卷花丹生長環境
生長於海拔600-850米的山坡、山谷密林下或林下,溪旁或蔭濕的地方。