TAs 8304. 
RHODODEN DRON mvucRONULATUM. 
Central and Eastern Asia. 
ERIcAcEAr. ‘Tribe RHODOREAER. 
Rhododendron (Rhodorastrum) mucronulatum, Turez. in Bull. Soc. Nat. 
Mosc. 1887, n. 7, p. 155, et 1848, vol. i. p. 585; species vel forsan varietas 
R. daurici, Linn., a quo differt foliis majoribus tenuioribus acutis ante 
anthesin caducis et floribus majoribus numerosioribus. 
Frutec nanus, ramosus, ramulis ultimis gracilibus parce lepidotis. Folia 
sparsa, internodiis quam petiolis vix longioribus, decidua, breviter gracili- 
terque petiolata; lamina tenuia, lanceolata, 3-8 cm. longa, saepius utrinque 
attenuata, apiculata, margine leviter undulata, utrinque, sed praecipue 
subtus, obscure lepidota; petioli 3-5 mm. longi. Gemmae floriferae 
uniflorae, sessiles, 2-5 ad apices ramulorum aggregatae; squamae plus 
minusve lepidotae, latae, fere orbiculares, exteriores crassiores, ciliolatae, 
circiter 4 mm. longae, intermediae tenuiores, albae, fimbriatae, circiter 
8 mm. longae, 2 vel 3 interiores lineari-spathulatae, fimbriatae, 10-12 mm. 
longae. Flores pallide rubro-purpurei, 4°5-5 em. diametro, brevissime 
pedunculati. Calyx brevissimus, dentibus deltoideis lepidotis. Corolla late 
campanulata, extra puberula haud lepidota, intus epunctata, lobis latis 
imbricatis rotundatis undulatis. Stamina 10, declinata, alterna breviora, 
longiora corallam haud excedentia ;. filamenta infra medium pilis planis 
linearibus crispulis unicellulatis instructa; antherae atro-purpureae. 
Ovarium 5-loculare, lepidotum, stylo glabro curvato stamina longiora 
paullo excedente. Capsula non visa—. dauricum, var. mucronulatum, 
Maxim. Rhod. As. Or. p. 44.—W. Borrine HemsLey. 
Examples of this pleasing Rhododendron had been a 
desideratum for the Kew collection for many years, but it 
was not until 1907 that a batch of plants, from one of 
which our figure has been prepared, was obtained by 
purchase from a firm of nurserymen in Yokohama; these 
plants were actually sent as representing a variety of 
R. quinquefolium, Bisset and Moore. The section Rhodo- 
rastrum, to which R. mucronulatum belongs, is distinguished 
by the flowers being solitary in each involucre of bracts 
instead of being in trusses. The late Mr. Maximowicz, who 
looked upon our plant as a variety of R. dauricum, Linn., 
states that it is readily distinguishable from typical £&. 
dauricum, as it occurs in the southern portion of its area, 
but that as we proceed northwards forms are found that 
Maron, 1910. 
