Alnus formosana

台灣赤楊

Alnus formosana (Burkill) Makino

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

Makino. 1912. The Botanical magazine, Tokyo 26: 390. (Bot. Mag. Tokyo)

台灣首次記錄發表文獻

同發表文獻

異名

Alnus japonica Steud.

Li. 1963. Woody Flora of Taiwan 80. (Woody Fl. Taiwan)
Alnus japonica Steud. var. formosana Callier

Callier. 1911. Repertorium specierum novarum regni vegetabilis 10: 228. (Rep. Sp. Nov. Regni Veg.)

各語言俗名

中

台灣赤楊、台灣榿木、赤楊、水柯仔、水柳柯、台北赤楊、台北榿木、台灣楷木、日本榿木
台

Chúi kho á、Chúi lâu kho、Chúi liû kho、Chhin hoan kho
原

Ibohoku (Atayal)
英

Formosan alder
日

たいわんはんのき

參考文獻

Yang. 1982. A list of plants in Taiwan. (List Pl. Taiwan)
Yeh-Ching Liu, Fu-Yuan Lu & Chern-Hsiung Ou. 1994. Trees of Taiwan revised. (Tr. Taiwan rev. ed.)

特徵描述

生活型

tree

形態特徵

Deciduous trees, 20 m tall, 40 cm across; branchlets glabrous or slightly pubescent when young.
Leaves alternate, elliptic, oblong to ovate-oblong, 6–12 cm long, 2–5 cm wide, acuminate at apex, broadly cuneate at base, glabrous or slightly pubescent when young, serrulate, lateral veins 6–7 pairs, midrib prominent beneath; petioles slender, 1.5–2.5 cm long.
Staminate catkins at apex of branchlets, pendulous; bracts rhombic-rounded, each subtending 3 flowers; pistillate spikes at apex of old branchlets; bracts 3–4 mm long, woody, apex rounded, 5-lobed, each bract subtending 2 flowers; ovary 2-celled, each cell with 1 ovule; styles 2.
Fruiting catkins 1–3 together, peduncled, about 1.5 cm long, cone-like, ellipsoid, persistent;nutlets compressed, with narrow wings, persistent, style remaining at the top.

物候

Flowering from autumn to spring.

分布

台灣 : widely distributed throughout the island at altitudes of 400–3,000 m; often forming pure stands, usually on river banks, in waste places or in exposed areas.
世界 : The Ryukyus.

引證標本

TAIPEI: Peihsinchuang, Shantsu, Yen 5392. HSINCHU: Luchangtashan, Fukuyama 38. NANTOU: Wushe, Lin & Tsai 13462; Shinmu village, Shinyi, Yen 4402. PINGTUNG: Peitawushan, Yang 31.