182 JOURNAL OF THE ARNOLD ARBORETUM [vol. vi 



26. Rhododendron Kanehirai Wilson in Wilson & Rehder, Monog. 

 Azal. 28 (1921), where a full account of the species is given. 



27. Rhododendron hainanense Merrill in Philip. Jour. Sci. xxi. 350 

 (1922). 



Shrub with many erect twiggy branches clothed with appressed brown 

 strigose hairs. Leaves subcoriaceous, linear-lanceolate, 2-3.5 cm. long, 

 0.3-1 cm. broad, acute, mucronate, base cuneate, upper surface dark 

 green with impressed costa and secondary nerves; lower surface sub- 

 glaucous with prominent costa and secondary nerves, and few scattered 

 appressed hairs; petiole flattened, 0.3-0.5 cm. long, clothed with appressed 

 gray-brown hairs. Flowers 1-3 in terminal fascicles; pedicels erect, 

 0.5-1.5 cm. long, densely clothed with appresscd-strigose hairs; calyx 

 deeply 5-lobed, lobes ovate-lanceolate, 0.3-0.5 cm. long, rounded or 

 acuminate, ciliate, densely pilose; corolla red, funnelform, 3-4 cm. long, 

 2.5-4 cm. broad, deeply 5-lobed, lobes spreading, acute or obtuse; 

 stamens 10, unequal, shorter than corolla, filaments pilose in the basal 

 half; pistil exceeding the stamens; ovary ovoid, densely pilose, style 

 filiform, glabrous, stigma capitate. Fruit ovoid, 0.0 cm. long, glabrescent. 



Habitat: eastern China, Hainan. 



This is a very distinct species well-characterized by its narrow linear- 

 lanceolate, acute leaves sub-glaucous on the underside and by its large 

 calyx lobes. It is most closely related to R. Nakaharai Hayata which 

 has oblanceolate to oval leaves. It is also related to R. Kanehirai Wils. 

 which has dimorphic linear-lanceolate leaves with obscurely crenate- 

 ate margins. I have seen a co-type specimen and through the 

 courtesy of Prof. E. I). Merrill I have the loan of a specimen collected by 

 Miss SchacfTer on a second occasion but probably from the same plant 



that yielded the actual type specimen. 



This is a very interesting addition to the Chinese species of the section 

 Tsutsutsi. It was discovered in January, 1921, by Miss K. L. SchaefTer 

 but has not yet been introduced into cultivation. 



28. Rhododendron lasiostylum Hayata, Icon. PI. Formos. in. 135 

 (1913). — Wilson in Wilson & Rehder, Monog. Azal. 50 (1921), where com- 

 plete references and synonymy and a full account of the species are given. 



29. Rhododendron rubropilosum Hayata in Jour. Coll. Sci. Tokyo, 

 xxx. art. 1, 173 (Mat. Fl. Formos.) (1911).— Wilson in Wilson & Rehder, 

 Monog. Azal. 52 (1921), where references, synonymy and a full account 

 of the species are given. 



A synonym of this Formosan species overlooked in my Monograph 

 is Rhododendron randaiense Hayata, Icon. PL Formos. vi. suppl. 43 

 (1917), name only. 



30. Rhododendron Simsii Planchon in Fl. des Serr. ix. 78 (1854). — 

 Wilson in Wilson & Rehder, Monog. Azal. 45 (1921), where complete 

 references and synonymy and a full account of the species are given. 



