166 CRAIB—HARDY SPECIES OF ENKIANTHUS. 
series there are E. Matsudai, which has already been referred 
to, and E. nipponicus, which differs from E. cernuus in the 
relatively shorter corolla and filaments. The genus has been 
further enlarged by Léveillé, but the inadequate descriptions 
provided preclude any remarks on his species unless it be 
to hazard a guess that some of them are allied to the 
tender E. quingueflorus while others may belong to the deflexus 
series. 
With regard to the cultivation of the various species, it has 
often been asserted that they are not perfectly hardy and that 
E. himalaicus should be wintered indoors. That is not the 
experience here. 
On the light alluvial soil of these gardens all are perfectly 
hardy, and as regards the plant of E. himalaicus, Professor 
Balfour informs me he has known that plant for at least twenty 
years, during which period it has been transplanted frequently 
and has never been under glass. This year some of the plants 
in exposed situations had many of their flower buds cut by the 
exceptional late frosts and persistent cold winds, but vegeta- 
tively they were not damaged. 
The following key has been based on the plants under 
cultivation here, and includes only such plants as have flowered 
during the last two years :— 
BEY TO THE SPECIES. 
Petiole not grooved above, adpressed to or at least parallel to the 
branchlet throughout its length, midrib (except at base) and 
ateral nerves not elevated on the lower surface which is polished, 
flowers white, urn-shaped, fascicled, nectaries very prominent 
tt ee é ae é des : 4 . perulatus. 
Petiole grooved above, spreading obliquely from the branchlet, midrib 
an Ives more or less elevated on the lower surface which 
with shorter adpressed rusty hairs, leaves mostly more 
or less rhomboid in outline, flowers appearing with the 
WM ee errugineus. 
Undersurface of leaves without the rusty adpressed short 
hairs, leaves mostly lanceolate to oblanceolate or broadly 
so, flowers appearing shortly after the leaves. 
. Corolla cup-shaped to almost orbicular . latiflorus. 
Corolla more or less campanulate. 
Corolla 11-13 mm. long, the lobes very soon markedly 
reflexing, pink colour confined to the lobes and vein- 
ing of the tube or sometimes extending to the tube 
tween the lobes .. ‘: . =recurvus. 
