珠光繡球
珠光繡球 |
中文名:珠光繡球 拉丁學名:Hydrangea candida Chun 界:植物界 科:虎耳草科 屬:繡球屬 種:珠光繡球 中國植物志:35(1):216 |
珠光繡球(zhū guāng xiù qiú),學名 Hydrangea candida Chun,灌木,高約1.5米;小枝圓柱形,稍彎曲,樹皮白色,老後呈薄片剝落。產廣西南部。生于山谷密林中,海拔約1000米。模式標本采自廣西防城十萬大山。 [1]
目錄
珠光繡球形態特徵
葉膜質,長卵形或橢圓形,長5-12厘米,寬2.5-5厘米,先端短尾狀漸尖,微彎,基部闊楔形或鈍圓,邊緣除兩端外,有稀疏小齒,干後上面淡黃色,下面灰白珍珠色且微帶黃色,略有光澤;
無毛或僅於下面脈上疏被緊貼短柔毛,側脈7-9對,纖細,彎拱,沿邊緣向上延伸,上面平坦或微凸,下面凸起,小脈網狀,下面微凸;
葉柄細,長0.5-1厘米,上面具凹槽,下面被緊貼疏柔毛。傘房狀聚傘花序頂生,具總花梗,結果時長6-9厘米,直徑約7厘米,頂端微拱,分枝較粗,擴展,密被捲曲短柔毛;
不育花缺;孕性花未見。蒴果不及一半下位,近球形,不連花柱長3.5-5毫米,寬3-4毫米,頂端突出部分長於萼筒,無毛,具棱,宿存萼筒淺杯狀,長1-2毫米;
萼齒披針形或三角形,長0.8-1.5毫米,先端尖;宿存花柱3,長約1.5毫米,擴展,基部完全分離,柱頭沿花柱內側向下延伸呈帶狀,長約1毫米,外彎;種子淡棕色,無翅。果期7-8月 。
Shrubs ca. 1.5 m tall. Branchlets terete; bark white, peeled off into fragments when old. Petiole thin, 0.5-1 cm, abaxially appressed pilose; leaf blade abaxially slightly glossy and pearly gray when dry, adaxially yellowish, ovate to elliptic, 5-12 × 2.5-5 cm, membranous, both surfaces glabrous or sparsely appressed pubescent along veins, secondary veins 7-9 on both sides of midvein, thin, abaxially elevated, base broadly cuneate to obtuse, margin sparsely serrulate, apex shortly caudate-acuminate.
Inflorescences corymbose cymes, ca. 7 cm wide, apex slightly arcuate; peduncle present; branches thick, densely crisped pubescent. Sterile flowers absent. Fertile flowers unknown. Capsule subglobose, 3-4 mm in diam., projected apical part longer than calyx tube;
persistent calyx tube shallowly cupular, 1-2 mm, teeth lanceolate to triangular, 0.8-1.5 mm; persistent styles 3, ca. 1.5 mm, stigmas curved outward, decurrent. Seeds brownish, wingless; seed coat net veined. Fr. Jul-Aug.
珠光繡球生長環境
生長於海拔約1000米山谷密林中。
珠光繡球分布範圍
分布於廣西南部。模式標本采自廣西防城十萬大山 。