Salix kusanoi

水社柳

endemic

Salix kusanoi (Hayata) Schneid.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

名彙資訊

學名發表文獻

Sargent, Plantae Wilsonianae 3: 100. 1916. (Pl. Wils.)

台灣首次記錄發表文獻

同發表文獻

異名

Salix tetrasperma auct. non Roxb.

Matsum. & Hayata, Enumeratio Plantarum Formosanarum 395. 1906. (Enum. Pl. Formos.)
Salix tetrasperma Roxb. var. kusanoi Hayata

Hayata, Materials for a flora of Formosa 305. 1911. (Mat. Fl. Formos.)
Salix doii Hayata

Hayata, Icones Plantarum Formosanarum 5: 201. 1915. (Icon. Pl. Formos.)
Salix suishaensis Hayata

Hayata, Icones Plantarum Formosanarum 6: 65. 1916. (Icon. Pl. Formos.)
Salix kusanoi (Hayata) Hayata

Hayata, General Index to the Flora of Formosa 73. 1917. (Gen. Ind. Fl. Formos.)
Salix warburgii O. Seem. var. eucalyptifolia Ying

Ying, Memoirs of the College of Agriculture, National Taiwan University 27(2): 38. fig. 13-16. 1987. (Mem. Coll. Agr. Natl. Taiwan Univ.)

各語言俗名

中

桉葉柳. 草野氏柳.
英

Kosano Willow. Shui-sheh willow.
日

すいしゃやなぎ. やつしべやなぎ. くさのやなぎ.

參考文獻

Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan)
Liu, Illustrations of native and introduced ligneous plants of Taiwan . 1961. (Ill. Nat. Intr. Lign. Pl. Taiwan)

特徵描述

生活型

tree

形態特徵

Trees to 8 m tall; trunk with stratified bark. Branches dark to reddish brown, glabrous, branchlets greenish to reddish brown, densely ferruginous-velutinous becoming glabrate. Buds elliptic, reddish brown, glabrous, marginal bracts overlapping, with wrin
Leaf blades ovate to oblong-lanceolate, 7-11(-14) cm long, 2-3.5(-4.5) cm wide, apex acute-acuminate to caudate, base slightly cordate to rounded, with auriculate glands, margins glandular-serrulate, rarely entire; immature leaf blades reddish to pale green, densely sericeous on both surfaces; mature leaf blades ferruginous-velutinous becoming glabrate beneath, greenish on both surfaces, lateral veins 30-50 pairs including those not reaching margins; petioles 5-15(-20) mm long, pubescent or glabrous; stipules reduced gland-like, tawny becoming dark brown, deciduous.
Aments precocious, 4-9 cm long, peduncles with 3-5 caducous leafy bracts. Flowers of staminate aments whorled; stamens 3-7, filaments pilose near base, 3-3.5 mm long, anthers widely ellipsoid, 0.3-0.5 mm long, 0.4-0.6 mm wide; nectaries 3-5, fused at base, cup-like, largest one adaxial; often with 2-3 lobes, sometimes pilose, others abaxial; bracts ovate to obovate, 2-3 mm long, 1.4-2 mm wide, apex obtuse to rounded, both surfaces pubescent, tip often becoming glabrate abaxially, tawny. Flowers of pistillate aments whorled aments, 3.5-5 cm long, to 10 cm long in fruit; peduncle pilose, to 2 cm long; leafy bracts deciduos, densely villose abaxially; pistils greenish, glabrous, lanceolate-conical, apex obtuse, styles 0.4 mm long, stigma double bifid, stipes glabrous, 0.8 mm long, 1/3 to 1/2 as long as bracts; nectary 1, adaxial, partly surrounding stipe, often lobed; bracts as in staminate flowers; ovules 4 per ovary.
Capsules ovate-lanceolate. Seeds green, clavate, 1-2 mm long, with coma at base.

分布

台灣 : In wetlands and ponds from lowlands to mountainous areas below 1,500 m.

引證標本

TAIPEI: Campus, Kao s. n. 1955; Wufenpo, Masamune 2491. ILAN: Shemihu, Su et al. s. n. 1987; Shuanglienpei, Yang 3293*, 3294*; Tapae, Ying s. n. 1987 (Type of S. warburgii var. eucalyptifolia, NTUF!); Tsaopae, Yang 3325. NANTOU: Sun Moon Lake, Kawakami s. n. 1916 (Type of S. suishaensis Hayata, TAIF!), Sasaki s. n.* 1929. KAOHSIUNG: Chishan, Kawakami & Mori s. n. 22347; Niaosung, Masamune 3407. PINGTUNG: Nanjenshan, Yang 3129, Tungyuan, Yang s.n. 1995. HUALIEN: Shoufong, Hsieh & Tang s. n. 1988.