4 ps 
BALFOUR—NEW SPECIES OF RHODODENDRON. 159 
adult that an observer might well question at first their being 
the same plant. None of Forrest’s specimens provide foliage- 
leaf buds, and I am unable to say what the features of the 
evolution of the leayes in the adult are, but the traces of juvenile 
hairs on the several parts of the adult leaf and the occasional 
presence of setulae indicate that the leaf in its younger stages 
is setulose. Although the leaves of the adult are green, there 
is often a tinge of reddening in the petiole and midrib, and 
at times the lamina may show a sort of metallic purpling remi- 
niscent of the juvenile phase. All the leaves, even the most 
green, yield on boiling a dark purple red almost black solution. 
The calyx is noteworthy. As a rule it is minute with 5 
deltoid lobes hardly one millimeter long, but occasionally one 
of them grows out into a long narrow membranaceous riband 
over one centimeter in length and sometimes a second one may 
also do so. Occasional intermediate stages may be seen. A 
calyx with all five calyx lobes having this riband or thread form 
is characteristic of Rh. nematocalyx, Balf. f. et W. W. Sm. (hence 
its name), which belongs to the Stamineum series also and is 
not far removed from Rh. oxyphyllum, Franch. 
The species is in cultivation and flowered in 1917 with Mr. 
Magor in Cornwall, who kindly sent to me the flower. Mr. J. C. 
Williams of Caerhays Castle also sent to me living specimens 
of the plant. 
Rhododendron stereophyllum, Balf. f. et W. W. Sm. 
Frutex ad 2 m. altus ramis rigidis strictis subdivaricatis” 
internodiis elongatis. Ramuli annotini circ. 2 mm. diam. 
purpurei laxe lepidoti et breviter puberuli seniores erubescentes 
squamarum pilorumque vestigiis notati tandem grisei decorti- 
cantes. Folia petiolata ad 6.8 cm. longa ad apicem ramu- 
lorum haud aggregata; lamina crasse coriacea elliptica vel 
oblongo-elliptica vel subovata ad 6 cm. longa 2.8 cm. lata saepe 
multo minor apice late obtusa mucrone brevi margine plana 
cartilaginea eciliata basi obtusa vel cuneata, supra viridis sub- 
nitida squamis superficialibus discontiguis brunneo-lepidota vel 
earum vestigiis notata costa media paullo sulcata sulco (sursum 
inconspicuo erubescente) pilis plurimis brevibus impleto venis 
primariis utrinsecus circ. 8 vix conspicuis, subtus pallide olivacea 
squamis aurantiacis vel rubris nitentibus persistentibus dis- 
contiguis numerosissimis in foveolas immersis dense obtecta 
squamarum umbone convexo  resinoso-colorato institaque 
angusta, costa media elevata erubescente laxe rubro-lepidota 
et pilis brevissimis erectis vestita ; petiolus circ. 8 mm. longus 
ruber plus minusve rubro-lepidotus et puberulus sulcatus sulco 
pilis albis brevissimis impleto. Umbellae 3-4-florae 3-4 ad 
F 
