討論:埔里杜鵑

山羊百科，林文智老師的植物、山岳、攝影紀錄

第一版

1. Shoots with appressed, flattened, brownish bristle-like hairs; leaves dimorphic, the spring and summer leaves different in shape.

2. Stamens 5, sometimes 4 or 6; flowers generally pink.

3. Plants hairy; flowers terminal; fruit long, over 10 mm long.

4. Leaves comparatively long, 3-5 cm in length; filaments and style villous; anthers not apiculate ……………………………………….7. R. lasiostylum

4. Leaves shorter, 0.4-3 cm long; filaments glabrous or slightly pilose; style glabrous.

5. Leaves larger, 2.5-3 cm long; filaments glabrous; anthers apiculate………………………… 1.R. breviperulatum

1. Rhododendron breviperulatum Hayata　 南澳杜鵑

A small shrub, many-branched, the young branches strigose, becoming glabrescent. Leaves chartaceous, petiolate, oblong or rarely ovate-oblong, 2.5-3 cm long, 1.2-1.7 cm broad, the apex obtuse, callose-apiculate at the tip, the base obtuse to short-attenuate, the margins entire, the upper surface green, scattered-hirsute to scabrid, the lower surface pale, densely furfurescent-strigose along the costa and veins, the costa raised beneath, the secondary veins about 4-5 per side; petiole 3-7 mm long, densely appressed-strigose. Flowers 3-6, terminal; pedicels about 6 mm long, densely hirsute; calyx 5-lobed, the lobes rounded, strigose; corolla reddish, about 1.5 cm long, and 2.5 cm across, deeply 5-lobed; stamens 5, the filaments unequal, nearly glabrous or sparsely pilose near the base; ovary and base of style pubescent. Capsules conical, about 1.1 cm long and 5 mm across, pubescent.

Endemic. In mountain forests at about 1,500 m along the east and northern coasts.

ILAN: Mori s. n. in 1909. TAICHUNG: Wilson 11206. NANTOU: Mori s. n. in 1909 (Type coll.).

7. Rhododendron lasiostylum Hayata 埔里杜鵑

A low shrub to 2 m; branches slender, the young branchlets covered densely with appressed scaly hairs. Leaves chartaceous, crowded at the tip or scattered along the branches, short-petiolate, oblong to oblong-lanceolate or obovate, 3-5 cm long, 1-2.5 cm broad, the apex broadly acute, apiculate, the base cuneate, the margins entire, recurved, the upper surface green, the lower pale, with appressed strigose hairs on both surfaces, the costa much raised beneath, the secondary veins about 4-5 per side; petioles 5-8 mm long, densely appressed- strigose. Flowers 2-3 together, terminal; pedicels about 5-10 mm long, densely furfurescent appressed-strigose; calyx 5-lobed, the lobes elongate-ovate, densely strigose; corolla pink, wide-funnelform, 3-3.5 cm long, deeply 5-lobed; stamens 5, the filaments slightly pilose at base; ovary and base of style pubescent.

Endemic. In forests at 500-2,650 m in the central range.

TAICHUNG: Wilson s. n. in 1918 (Type of R. sasakii Wilson), Kawakami s. n. in 1910. NANTOU: Price 843; Luantashan, Mori s. n. in 1911 (Type of R. lasiostylum Hayata); Sun Moon Lake, Kudo & Sasaki 15289. CHIAYI: Mt. Alishan, Gressitt 121, Faurie 165. TAITUNG: Sasaki 334.