光苞柳檢視原始碼討論檢視歷史
光苞柳 |
中文名:光苞柳 學 名:Salix tenella Schneid. 界:植物界 門:被子植物門Angiospermae 綱:雙子葉植物綱Dicotyledoneae 目:楊柳目 科:楊柳科Salicaceae 屬:柳屬Salix 種:光苞柳 |
光苞柳(guāng bāo liǔ,學名 Salix tenella Schneid.異名:Salix longiflora var. psilolepis ),產雲南西北部、四川西南部。生於海拔2600-3800米的山坡或溝谷中。灌木。小枝褐紅色或帶紫邑,無毛。產自雲南西北部、四川西南部。 [1]
光苞柳形態特徵
灌木。小枝褐紅色或帶紫色,無毛。
葉橢圓狀長圓形至倒卵狀長圓形,稀倒卵形,長約2.5厘米,寬約1厘米,壯枝與萌枝葉長達6.5厘米,寬2.5厘米,先端短急尖,基部圓形,上面綠色,下面發白色,全緣或有不明顯的腺齒(開花時葉很小,長僅1-2厘米),葉柄長5-8毫米;上年落葉呈現褐黑色。
花與葉同時或近同時開放;花序長1-2.5厘米,粗3-4毫米,有短花序梗,具有2-3小葉(果序長可達4厘米,花序梗伸長達1.5厘米);雄花具雄蕊2,花絲離生,長1.3-2毫米,下部有柔毛,花葯近球形,金黃色或黃色;苞片倒卵形,長約1毫米,無毛,先端圓形或圓截形,常彎曲;腺體2,分裂或不分裂;子房卵形或闊卵形,無毛,無柄,花柱不明顯,柱頭2淺裂; 苞片卵圓形,無毛或稍有緣毛,與子房等長;腹腺1,分裂或不裂,背腺有或無。
蒴果圓錐形,長達2.5毫米,無柄或有極短的柄。花期5月上旬,果期6月上旬。 [2]
Salix tenella Schneid. in Bot. Gaz. 64: 137. f. a 1-6. 1917; Hand.-Mazz. Symb. Sin. 7: 68. 1929; Hao in Fedde, Rep. Beih. 93: 63. t. 15: 30. 1936.——S. longiflora Anderss. var. psilolepis Hand.-Mazz. 1. c. 67, 1929.
Shrubs. Branchlets brownish red or purplish. Petiole 5-8 mm; leaf blade elliptic-oblong to obovate-oblong, rarely obovate, ca. 2.5 × 1 cm, 1-2 cm at anthesis, to 6.5 × 2.5 cm on shoots and robust branchlets, abaxially whitish, adaxially green, base rounded, margin entire or indistinctly dentate, apex acute; fallen leaves of previous year brownish black. Flowering nearly coetaneous. Male catkin 1-2.5 × 0.3-0.4 cm; peduncle short, with 2 or 3 leaflets; bracts obovate, ca. 1 mm, glabrous, apex rounded, rounded-truncate, or spatulate. Male flower: adaxial and abaxial glands divided or entire; stamens 2, distinct, 1.3-2 mm, basally downy; anthers yellow or golden-yellow, subglobose. Fruiting catkin to 4 cm; peduncle ca. 1.5 cm; bracts ovate-orbicular, ca. as long as ovary, glabrous or slightly ciliate. Female flower: adaxial gland present, divided or entire, abaxial gland sometimes present; ovary ovoid or broadly ovoid, glabrous or pubescent at base, sessile; style indistinct; stigma 2-lobed. Capsule conical, ca. 2.5 mm; stipe very short or absent. Fl. beginning of May, fr. Jun.
光苞柳生長環境
生長於海拔2600-3800米的山坡或溝谷中。