討論:高山柳

山羊百科，林文智老師的植物、山岳、攝影紀錄

褐毛柳组 Sect. Fulvopubescentes C. F. Fang

台湾匐柳 Salix takasagoalpina Koidz.

匍匐生根的小灌木。嫩枝有白色柔毛。葉小，革質，橢圓形，長約l釐米，寬7毫米，急尖，基部鈍，上面近無毛，下面發白色，側脈約4對，邊緣有細鋸齒；葉柄長l～2毫米，無毛。花序短圓柱形或長圓形，長約l釐米，密花；苞片長圓形；雌、雄花都僅具1腹腺；雄蕊2，花絲離生，無毛}子房披針形，有柄，無毛，花柱短，上部2裂。

4c. var. takasagoalpina (Koidz.) Ying in Mem. Coll. Agr. Nat. Taiwan Univ. 27(2): 33. 1987. 高山柳 Pl.13, Photo 16

Salix takasagoalpina Koidz. In Acta Phytotax. Geobot. 8: 112. 1939; Li in Fl. Taiwan 2: 39. 1976.

Low shrubs, procumbent to soboliferous, 5-50 cm tall, branchlets white puberulous, then glabrate, very slender. Leaf blades elliptic, 1.5-2.5 cm long, 0.8-1.4 cm wide, acute to obtuse at both ends, margins serrulate, subglrabrous and glaucous beneath, lateral veins 4-8 pairs; petiole 2.5 mm long; stipules, 0.4 mm long, ovate, deciduous or not developed. Aments subsessile, precocious or subprecocious, with 2-3 leaves at base, staminate aments 0.8-1.2 cm long; stamens 2, filaments 1.5-3 mm long, base pubescent, anthers 0.4-0.6 mm long, 0.3-0.5 mm wide, wider in lower part, nectary 1 adaxial, short clavate; bracts linear-oblong, reddish at tip, 1.1-1.8 mm long, 0.3-0.7 mm wide, densely or sparsely villous on both side; pistils pubescent, pyriform, style longer than stigma, stigma short double bifid or bifid, stipe 0.5-1 mm long; nectary 1, adaxial, square, 1/3-1/2 as long as stipule; bracts linear-oblong, 1.1-1.6 mm long, 0.4-0.8 mm wide, 1.5 to 2 times as long as stipule; ovules 6-10 per ovary. Capsule ovate-lanceolate. Seeds green, clavate, 1-2 mm long, with coma at base.

Endemic. On high mountain ridges and cliffs, 2,700-3,600 m, in southern Taiwan.

NANTOU: Hsiukulanshan to Maboulassushan, Yang 3032, Ying 2744 (Type of S. maboulasensis, NTUF!). KAOHSIUNG: Hsiangyangshan, Chen 14970; Kuanshanling, Yang 3096*, Kuoh 11870*; Kuanshan, Yang 3024.

3. Salix okamotoana Koidz. In Acta Phytotax. Geobot. 8: 113. 1939; Li in Fl. Taiwan 2: 38. 1976. 關山嶺柳 Pl.10, Photo 11, 12

Low shrubs, decumbent or repent, 15-50 cm tall, few branched. Branches dark brown, sometimes white farinose; branchlets greenish to reddish brown, glabrous, thick. Buds glabrous, yellowish to reddish brown; bud scales fused, calyptrate or cap-like, spliting open on adaxial face. Leaf blades obovate to obovate-elliptic, larger ones 6-10 cm long, 3-5 cm wide, acute to rounded, base broadly cuneate, margin glandular-serrulate; immature leaf blades long sericeous beneath, soon glabrate; mature leaf blades thick herbaceous, often glaucous beneath, glabrous, lateral veins 12-16 pairs; petiole yellowish to brown, 7-14 mm long, sometimes with glandular processes at distal end; stipules small, linear, sometimes glandlike, deciduous or undeveloped. Aments precocious, more or less pendulous, leafy bracts 2-3, green. Staminate aments 2, filaments glabrous or pilose near base, 5-8 mm long, anthers 2-celled, unequal, ca. 1 mm long, 0.5 mm wide; nectary 1, adaxial, square; bracts pale tawny, obovate, 2.5-3 mm long, densely villous with long hairs on both sides. Pistillate aments 2.5-3 cm long, elongating in fruit; pistils pubescent with white hairs, pyriform, 3 mm long; stigmas double bifid or bifid with or without a short style, stipules as long as bracts, much longer in fruit; nectary 1, rectangular to short clavate, to 0.8 mm long; bracts as in staminate flowers; ovules 20 or 21 per ovary. Capsule ovoid, long stipulate. Seeds green, clavate, 1-2 mm long, with coma at base.

Endemic. On wed cliffs, ca. 2,900 m, very rare.

HSINCHU: Hsinda shelter, Yang 3113. KAOHSIUNG: Kuanshanling, Yang 3029*, 3094*.