174 BALFOUR—NEW SPECIES OF RHODODENDRON. 
midrib slightly grooved with a puberulous ridge in the groove, 
primary veins some 9 on each side pinnately radiating ; under 
surface paler scaly with yellowish peltate scales about I mm. 
apart each with a broad umbo and narrow fringe, hairless except 
on the prominent midrib which is puberulous and bristly, primary 
veins slightly prominent ; petiole short and broad about 5 mm. 
long puberulous and densely bristly also with a few peltate 
scales, slightly grooved above. Flowers in terminal usually 
4-flowered umbels ; bracts falling as flowers expand ; bracteoles 
filiform with spathulate apex about 1.5 cm. long shorter than 
pedicels, hairy on back and scaly on underside of broader tip ; 
pedicels green about 2 cm. long scaly and bristly with white 
bristles. Calyx small cup-shaped or saucer-shaped about 1.5 mm. 
long green scaly and hairy outside the 5 lobes rounded or pointed 
longer than the cup with long marginal white cilia. Corolla of 
butterfly-form with funnel-shaped laterally compressed tube 
which is pinkish passing into white at base of posterior petal, 
the limb rich violet (hortense-violet) with a white area on posterior 
petal and many green spots, as much as 4 cm. long ; tube fleshy 
deeply grooved outside at base specially on each side of posterior 
petal correspondingly ridged inside, more or less pouched the 
posterior petal much more so than the others, inside puberulous 
in the throat, expanding obliquely into 5-lobed limb; lobes 
ovate or oblong-ovate obtuse posterior erect broadest as much 
as 2 cm. long 1.8 cm. broad entire. Stamens Io unequal, longest 
about equalling corolla some 4 cm. long with anther 3.5 mm. long, 
shortest about 2 cm. long with anther 2 mm. long; filaments 
flushed pink slightly dilated downwards, base naked over about 
3 mm. then with a tuft of villous hairs, hairless above ; anthers 
ochre-coloured. Disk puberulous below the ovary. Gynaeceum 
about 4.5 cm. long a little longer than corolla ; ovary about 4 mm. 
long conoid truncate densely scaly hair-crested ; style pink hairy 
at base slightly swollen and forming a narrow crimson lip below 
the discoid lobed crimson stigma. 
Szechwan. Muping. Wilson. No, 4242. 
Rh. trichophorum has appeared in several individuals along 
with true Rh. villosum, Hemsl. et Wils., in a sowing of Wilson’s 
No. 4242. That number is cited in Plantae Wilsonianae for 
Rh. villosém from Muping and Rh. trichophorum may be taken 
therefore to be a Muping plant. It is not Rh. villosum. The 
two plants are very different in appearance and can be readily 
separated by technical characters. The old leaves are hairless 
on the upper surface not covered with bristles as in Rh. villosum 
and not puberulous beyond the midrib below as the leaves are 
in Rh. villosum ; the calyx is ciliate with bristle-hairs but not 
villous with them all over; the corolla has a pink tube passing 
