Rhododendron tosaense Makino

Bot. Mag. (Tokyo) 18: 101 (1904)

WFO ID: wfo-0000405629

IPNI ID: urn:lsid:ipni.org:names:333487-1

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Description

Much-branched shrub, 1.5-2m; young shoots clothed with adpressed flattened grey-brown strigose hairs. Leaves deciduous or partly persistent, crowded at the ends of branchlets, dimorphic; spring leaves oblanceolate to oblanceolate-spathulate, 0.7-4 x 0.2-lcm, 3.5-4 x as long as broad, apex acute, base cuneate, margin entire, with scattered adpressed grey hairs on both surfaces; summer leaves minute, 3-7mm long, otherwise as for spring leaves; petioles 2-4mm, adpressed-strigose. Inflorescence 1-6-flowered; pedicels 4-10mm, densely adpressed-strigose. Calyx covered with flattened strigose hairs, lobes broadly ovate, c.2mm, ciliate. Corolla funnel-shaped, 18-25mm, purplish-pink with or without darker flecks, rarely white with a faint pink flush; tube 10-I4mm, glabrous. Stamens 5(-10), unequal, c. as long as the corolla, filaments coarsely papillate in lower half. Ovary densely strigose, style glabrous. Capsule not known.

Distribution

Japan (Kyushyu, Shikoku, S Honshu)

Altitude

Habitat

Open slopes, etc

Nomenclatural History

R. obtusum Planchon var. tosaense (Makino) Kitamura, Acta Phytotax. Geobot. 25(2-3): 37 (1972). R. komiyamae Makino, J. Jap. Bot. 3(5): 17 (1926). Syntypes: Japan, Prov. Suruga, Mt Ashitaka, Komiyama, 10 vi 1925, Sawada, n.v. R. miyazawae Nakai & Hara, J. Jap. Bot. 11: 823 (1935). Type: Japan, Kyushu, prov. Hiuga circa Tomitaki-machi, Higashi- usuki-gun, 12 iv 1929, Miyazawa 112, n.v. R. surugaense [Sugimoto ex] Kurata, 111. Imp. Tr. Jap. 4: 182, t.37 (1973). Type: as for R. komiyamae.

Notes

References

Chamberlain, D.F. & Rae, S.J. (1990) A Revision of Rhododendron IV Subgenus Tsutsusi. Edinburgh Journal of Botany 47(2):123