BALFOUR—NEW SPECIES OF RHODODENDRON. 175 
into white lepidote and hairless outside with a violet limb not 
a deep-red tube lepidote and hairy outside with purple limb; 
the style is hairy not glabrous at base. When Rh. trichophorum 
first showed amongst our plants of Rh. villosum it had the aspect 
of a form of Rh. Augustinit, Hemsl., and it resembles that species 
more than it does Rh. villosum. But Rh. Augustinit never has 
the copious bristles on the stem and leaves which characterise 
Rh. trichophorum, and in particular has the pedicels without 
bristles; the underleaf peltate scales of Rh. Augustinii are 
distant from one another by about the diameter of the scales, 
sometimes a little more but rarely more than half a millimetre 
apart, while in Rh. trichophorum they are about I mm. distant. 
There are other differences also. 
Rh, Amesiae, Rehd. et Wils., is another Muping plant of 
this affinity. As described in Plantae Wilsonianae it shows 
conspicuous differences from Rh. villosum in the warted not 
bristly surface of the stem bristles being present only on the 
petioles and in the hairless outer surface of the corolla. 
A specimen under the type number Wilson 3444 in Kew Her- 
barium kindly lent to me by the Director of Kew corresponds 
with the description and there is growing at Kew a plant which 
I have seen (not in flower) which in vegetative characters is 
this Rh. Amesiae. But at Edinburgh we have a specimen 
in our herbarium under the type number Wilson 3444 which 
has the stems clad with bristles. The same has to be said of the 
pedicels. In other characters it matches well Rehder and Wilson’s 
plant. It would appear therefore that Rehder and Wilson’s 
species may have either warted or bristly stems and pedicels. 
The dried material at Kew and Edinburgh is scrappy and does 
not suffice for much critical comparison of the two forms. If 
Rh. Amesiae has sometimes bristles on the stem it is linked more 
nearly with Rh. trichophorum but is yet distinct from it. Two 
characters—one strong the other less so—may be given as 
distinctions. The under surface of the leaf is in Rehder and 
Wilson’s words ‘‘ densissime lepidota et ferruginea.’”’ The peltate 
scales which are of different sizes are not quite contiguous but 
always closer together than the diameter of the scales. In Rh. 
trichophorum the under surface of the leaf is pale green the peltate 
scales which are nearly uniform in size being distant usually 
as much as i mm. apart as they are in Rh. villosum. This gives 
a diagnostic mark recognisable at sight. The other character 
referred to is in the corolla which has the tube villosulous 
inside whilst in Rh. trichophorum there are only a few short hairs. 
In Rh. trichophorum is added another to a small phylum 
within the Triflorum series marked by the presence of bristles 
more or less developed over the shoots and also on the pedicels. 
