白背麩楊
白背麩楊 |
中文名:白背麩楊 門:被子植物門 Angiospermae 綱:雙子葉植物綱 Dicotyledoneae s 亞 綱:原始花被亞綱 Archichlamydeae 目:無患子目 Sapindales 亞 目:漆樹亞目 Anacardiineae 科:漆樹科 Anacardiaceae 族:漆樹族 Trib. Rhoideae 屬:鹽膚木屬 Rhu |
白背麩楊(學名:Rhus hypoleuca Champ. ex Benth.)灌木或小喬木;產於廣東沿海地區,湖南、福建以及台灣;生於海拔800-1500米的山坡、曠野疏林中。 [1]
目錄
白背麩楊形態特徵
灌木或小喬木;小枝圓柱形,紫褐色,幼枝被灰色微絨毛,後變無毛,疏生棕色小皮孔。
奇數羽狀複葉長20-30厘米,有小葉4-8對,葉軸和葉柄被灰色微絨毛,無翅;小葉對生,紙質,卵狀披 白背麩楊(10張) 針形或披針形,長5-9.5厘米,寬2-3.5厘米,先端漸尖,基部偏斜,全緣或略具粗鋸齒,略背卷,葉面脈上被灰色微絨毛,其餘稀疏或近無毛,葉背密被白色絹狀微絨毛,側脈約11對,中脈和側脈在葉面微凹,葉背突起,網脈不顯;小葉無柄。
圓錐花序長達20厘米,被灰黃色微絨毛,花小,白色;花梗長1-2毫米,被灰黃色微絨毛;花萼裂片卵形,長約5毫米,外面被微柔毛,邊緣具細睫毛;花瓣倒卵狀長圓形,長約2毫米,裡面中脈被白色長柔毛,邊緣具細睫毛;花絲線形,與花葯等長;花盤無毛;子房球形,被白色長柔毛。
Rhus hypoleuca Champ. ex Benth. in Hook. Kew Journ. Bot. 4: 43. 1852; Benth. Fl. Hongk. 69. 1861; Engl. in DC. Monog. Phan. 4: 378. 1883; H. L. Li, Wood. Fl. Taiw. 448. 1963, et in Fl. Taiw. 3: 569. 1977.
核果徑約4毫米,被白色長柔毛和紅色腺毛。
Shrubs or small trees; branchlets minutely grayish pubescent to glabrous, sparsely lenticellate. Petiole and rachis grayish tomentose, wingless; leaf blade imparipinnately compound, 20-30 cm; leaflets sessile, 9-17, opposite; leaflet blade ovate-lanceolate or lanceolate, 5-9.5 × 2-3.5 cm, adaxially gray tomentose along midrib, abaxially densely white tomentose, base oblique, margin entire to sparsely serrate, slightly revolute, apex acuminate, lateral veins ca. 11 pairs, midrib and lateral veins slightly impressed adaxially and prominent abaxially. Inflorescence to 20 cm, grayish yellow tomentose. Pedicel 1-2 mm, grayish yellow tomentose; flowers white. Calyx lobes ca. 0.5 mm, minutely pubescent, margins ciliate. Petals obovate-oblong, ca. 2 mm, margins ciliate, abaxially with white hairs along midrib. Male flowers with filament equal in length to anther. Disk annular. Female flowers with globose ovary, densely covered with white hairs. Drupe ca. 4 mm in diam., mixed pilose and red glandular-pubescent. Fl. Aug, fr. Sep-Oct.
● Hill forests; 800-1500 m. Fujian, Guangdong, S Hunan, Taiwan.
白背麩楊生長環境
生於海拔800-1500米的山坡、曠野疏林中。