討論:黃花著生杜鵑

山羊百科，林文智老師的植物、山岳、攝影紀錄

6. Rhododendron kawakamii Hayata

1. Flowers white or pink; leaves obovate, petioles 3-5 mm long　6a. R. kawakamii kawakamii

1. Flowers yellow; leaves mostly oblanceolate, petioles less than 3 mm long 　6b. R. kawakamii flaviflorum

6a. Rhododendron kawakamii kawakamii. 著生杜鵑

Epiphytic shrub, 0.3-1.3 m tall, the branches numerous, slender, often tortuous, glabrous, gland-dotted; bud scales acute, ciliolate, punctate. Leaves short-petiolate, coriaceous, numerous, clustered, obovate, 2.5-5 cm long, 1.5- 3 cm broad, the apex rounded or mucronulate, the base acute to attenuate, the margins slightly recurved, the upper surface dark green, glabrous, the lower paler, glandular-punctate, the costa and secondary veins impressed above, raised beneath, petiole 2.5 mm long, winged. Flowers racemose-umbellate, 3-5; pedicels spreading, 2-2.5 cm long, sparsely gland-dotted; calyx saucer-shaped, 5- lobed, the lobes irregular, glandular-ciliolate; corolla pink or white, glandular- punctate, rotate-campanulate, 1 cm long, 1-1.2 cm broad, 5-lobed, the lobes broad- oblong, rounded; stamens 10, unequal, the filaments shorter than the corolla. Capsules ovoid, 0.8-1.2 cm long, sparsely villous.

Endemic. A common epiphyte on trees in rain forests at high altitudes between 1,550-2,600 m.

TAIPEI: Suzuki 21352. ILAN: Taipingshan, Suzuki s. n. in 1929. NANTOU: Luantashan, Hayata & Mori 7002 (Type coll.), Kawakami & Mori s. n. in 1908. CHIAYI: Mt. Alishan, Wilson 9703; Yushan, Kawakami & Mori 2005 (Type coll.).

6b. Rhododendron kawakamii var. flaviflorum Liu & Chuang in Quart.. Journ. Tai-wan Mus. 13: 64. 1960; Liu, l.c. 2: 984.f. 814. 1962. 黃色著生杜鵑

Differs from the typical phase by the yellow flowers and the mostly oblanceo- late leaves with shorter petioles.

Endemic. Epiphytic on trees in forests at 800 to 2,100 m. ILAN: Tayuanshan, Chuang & Kuo 197; Taipingshan, Liao 10031.