ERICACEAE. 137 



acl 6 cm. longa, tubo 2 cm. longo deorsum angustato intus supra basin 

 usque ad infra medium tenuiter hirsute, limbo 5-lobato, lobo superiore 3 cm. 

 longo 2|- cm. lato oblongo apice rotuudato prope basin purpureo-punctato, 

 lobis altris vix minoribus. Stamina 8, in longitudine insequalia, filamentis 

 complanatis prope basin tenuiter hirsutis basin glabris, a infra medium usque 

 ad apicem glabris, antheris ellipsoideis 3 mm. longis l mm. latis apice 

 truncatis lobatis 2-porosis basi emarginatis. Ovarium cylindricum 1 cm. 

 longum 2|- mm. latum glabrum leviter 5-sulcatum, stylo glabro 5 cm. longo 

 apice vix dilatato, stigmate brevissime 5-lobato. 



HAB. Shichiseitonsan, leg. S. SASAKI, 1911, Aprili. Fl. 



The present plant is more or less related to JR. Henry i, R. Simiarum 

 and It. ettipticum, but differs from the first by the glabrous leaves, from 

 the second by the glabrous peduncles and shortly acuminate glabrous leaves, and 

 from the last in the pallid under surface of the leaves. 



Rhododendron (Choniastrum) leptosanthum HAY ATA sp. nov. Rhodo- 

 dendron ellipticum HAYATA Fl. Mont. Formos. p. 152, pro parte, (non MAXIM). 

 Kami d~ flexuosi cinerascentes. Folia versus apicem rami disposita ovato-vel 

 obovato-obloiiga 5-6 cm. longa 2-2 cm. lata utroque acuta apice acutissima 

 basi acuta, (costa supra impressa subtus prominenti venis utraque facie 

 tenuiter elevatis vix conspicuis) supra nitida subtus opaca pallidiora margine 

 integerrima tenuissime recurva vel plana utraque glabra, petiolis brevioribus 

 in longitudine j-plo laminam sequantibus glabris supra angustissime sulcatis 

 apice angastissime alatis. Flores quasi-terminaliter 5-6-fasciculati, (in 

 sensu stricto circa gemmam ad axillas foliorum summorum quasiverticillatorum 

 verticillatim 5-6 siti), perulis deciduis non visis, pedicellis glabris 1 cm. 

 longis. Calyx brevissimus 2 J mm. in diametro brevissime 5-dentatus, dentibus 

 glabris brevissimis mm. longis obtusissimis. Corolla late campanulata 3 cm. 

 bnga, tubo brevi 1 cm. longo, limbo 5-lobato, lobis patentibus 2 cm. longis 

 obovato-oblongis apice rotundatis intus supra basin usque ad infra medium 

 tenuiter hirsutis. Stamina 10 in longitudine insequalia, filamentis supra 

 basin usque ad infra medium hirsutis basin glabris, infra medium usque ad 

 apicem glabris, antheris ovato-oblongis 2 mm. longis apice truncatis basi 



