微心葉毛柃檢視原始碼討論檢視歷史
微心葉毛柃(學名:Eurya subcordata Hu et L. K. Ling),是山茶科柃屬灌木或小喬木,高可達5米;種子黑褐色,有光澤。產於雲南。 [1]
微心葉毛柃 |
中文學名:微心葉毛柃 拉丁學名:Eurya subcordata Hu et L. K. Ling 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:五椏果亞綱 目:杜鵑花目 科:山茶科 亞 科:厚皮香亞科 族:楊桐族 屬:柃屬 分布區域:雲南東南部 |
微心葉毛柃形態特徵
灌木或小喬木, 高1-5米;幼枝圓柱形,密被黃褐色開展長柔毛,一年生枝毛被多少宿存;頂芽密被柔毛。
葉革質,長圓形、長圓狀卵形或披針形,長2.5-3.5厘米,寬1-1.3厘米,先端鈍或鈍急尖,基部微心形,邊緣具細密鋸齒,葉面綠色,無毛,背面黃綠色,被短柔毛,中脈上毛被較密,側脈6—9對,中脈和側脈在葉面凹陷,背面突起,網脈在葉面微凹,背面略突;葉柄長約1毫米,被柔毛。
花1-3朵腋生,花梗長2-3毫米,疏生短柔毛;雄花:小苞片2,卵形;萼片5,闊卵形或近圓形,膜質,長約1.5毫米,先端圓形,外面疏生短柔毛,邊緣具睫毛;花瓣5,白色,倒卵形或長圓狀倒卵形,長約3.5毫米;雄蕊15-16枚,花葯不具分格;退化子房密被柔毛;雌花小苞片、萼片和花瓣與雄花同,稍小;子房卵球形,密被柔毛,3室,花柱長約3毫米,先端3裂。
物種區別
微心葉毛柃和披針葉毛柃E. henryi Hemsl.很相似,但後者葉披針形,頂端尾狀漸尖,基部圓形以及萼片無毛,花葯具2-3分格等易於區別。
Shrubs or trees, 1-5 m tall. Older branches grayish brown, subglabrous; young branches spreading, blackish brown pubescent; current year branchlets terete, densely yellowish brown spreading villous; terminal buds densely pubescent. Petiole to 1 mm, pubescent; leaf blade oblong, ovate-oblong, or ovate-lanceolate, 2.5-3.5 × 1-1.3 cm, leathery, abaxially pale green and pubescent particularly along midvein, adaxially green and glabrous, midvein abaxially elevated and adaxially impressed, secondary veins 6-9 on each side of midvein, slender, abaxially raised, and adaxially impressed, base slightly cordate, margin closely serrulate, apex obtuse to acute. Flowers axillary, solitary or to 3 in a cluster. Pedicel 2-3 mm, sparsely pubescent. Male flowers: bracteoles small, ovate; sepals broadly ovate to suborbicular, ca. 1.5 mm, membranous, outside pubescent, margin ciliolate, apex rounded and with a black mucro; petals obovate to obovate-oblong, ca. 3.5 mm; stamens 15 or 16; anthers not locellate; pistillode densely pubescent. Female flowers: bracteoles, sepals, and petals similar to those of male flowers; ovary ovoid, densely pubescent, 3-loculed; style ca. 3 mm, apically 3-lobed. Immature fruit ovoid, 3-3.5 × ca. 3 mm, with ca. 10 seeds per locule, sparsely pubescent. Fl. Nov-Dec, fr. May-Jun.
微心葉毛柃生長環境
微心葉毛柃生於海拔1200-2100米的陰濕林下或溪谷林中。