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光苞柳 |
中文名:光苞柳 学 名:Salix tenella Schneid. 界:植物界 门:被子植物门Angiospermae 纲:双子叶植物纲Dicotyledoneae 目:杨柳目 科:杨柳科Salicaceae 属:柳属Salix 种:光苞柳 |
光苞柳(guāng bāo liǔ,学名 Salix tenella Schneid.异名:Salix longiflora var. psilolepis ),产云南西北部、四川西南部。生于海拔2600-3800米的山坡或沟谷中。灌木。小枝褐红色或带紫邑,无毛。产自云南西北部、四川西南部。 [1]
光苞柳形态特征
灌木。小枝褐红色或带紫色,无毛。
叶椭圆状长圆形至倒卵状长圆形,稀倒卵形,长约2.5厘米,宽约1厘米,壮枝与萌枝叶长达6.5厘米,宽2.5厘米,先端短急尖,基部圆形,上面绿色,下面发白色,全缘或有不明显的腺齿(开花时叶很小,长仅1-2厘米),叶柄长5-8毫米;上年落叶呈现褐黑色。
花与叶同时或近同时开放;花序长1-2.5厘米,粗3-4毫米,有短花序梗,具有2-3小叶(果序长可达4厘米,花序梗伸长达1.5厘米);雄花具雄蕊2,花丝离生,长1.3-2毫米,下部有柔毛,花药近球形,金黄色或黄色;苞片倒卵形,长约1毫米,无毛,先端圆形或圆截形,常弯曲;腺体2,分裂或不分裂;子房卵形或阔卵形,无毛,无柄,花柱不明显,柱头2浅裂; 苞片卵圆形,无毛或稍有缘毛,与子房等长;腹腺1,分裂或不裂,背腺有或无。
蒴果圆锥形,长达2.5毫米,无柄或有极短的柄。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.
光苞柳生长环境
生长于海拔2600-3800米的山坡或沟谷中。