36 THE JOURNAL OF BOTANY 
shire that led to the finding, in the same wood, of numerous plants 
of both Q. Robur and Q. sessiliflora, which latter species had not 
previously been recorded for this county. It is certain that the 
itherto unsuspected occurrence, the widespread distribution, and 
the local abundance of the Hybrid Oak in Britain has been 
responsible for some of the confusion which botanists and foresters 
ave manifested in the past with regard to the distinctness of the 
two native species. 
. Robur and Q. sessiliflora have been said to flower at slightly 
(. Cerris still more so. ing of the stamens of Q. sessili- 
flora and Q. Robur continued simultaneously for a fortnight, being 
delayed by cold weather y stame species were 
careful observations and experiments with regard to the cultiva- 
tion of the natural and fertile Hybrid Oak which occurs in some 
of the woodlands of this country. 
IV. QUERCUS LANUGINOSA. 
QUERCUS LANUGINOSA Thuiller, Fl. Env. Paris, ed. 2, 502 (1799). 
Y. pubescens Willd. Sp. Pl. iv. 450 (1805). 
@. Robur subsp. sessiliflora var. lanuginosa DC. Prodr. xvi. 2, 
10 (1864). 
_ This plant, which is characteristic of certain districts, chiefly 
limestone ones, in south and south-central Euro e, has been re- 
just a possibility that the true plant, in one of its less hairy forms, 
occurs in the south of England, it is well to give its more impor- 
ers. 
 Y. tanuginosa differs from Q. sessiliflora, to which it is closely 
related, in possessing young twigs and petioles which are densely 
hairy. The hairs on the under side of the leaf are also longer, 
more numerous, and much more conspicuous than in most forms 
: of Q. sessiliflora. The bud-scales are pubescent all over the general | 
