60 | Rhodora [March 
the opinion of Schiffner. L. longidens grows in rather loose tufts. 
and is either dull green in color or more or less tinged with brown or 
yellow. Itis more delicate in texture than most of its allies, the leaf- 
cells being thin-walled except for their minute trigones. The leaves 
are ovate-quadrate or ovate-rectangular in outline and are bifid one 
third or less with an obtuse sinus. ‘The divisions of the leaves are 
narrowly triangular and acute, rarely diverging from each other to 
any extent. ‘The species rarely fruits but usually develops gemmi- 
parous branches which are among its most striking features. These 
branches are ascending or erect and their crowded leaves are almost 
transversely attached. ‘They spread obliquely from the axis but are 
frequently squarrose in the outer part. The gemmae are borne in 
small clusters at the tips of the lobes; they are globoid or short- 
ellipsoid in form, sometimes with obscure angles, and are either 
unicellular or bicellular. In color the gemmae are normally reddish 
brown, but the New Hampshire specimens bear green gemmae and 
Schiffner states that he has observed a similar condition among 
European specimens. Probably the lack of pigmentation in these 
cases is due to the fact that the plants were deeply shaded. L. longi- 
dens seems to attain its best development on rocks but it also occurs. 
on logs; it is apparently confined to alpine or subalpine localities. 
(To be continued.) 
QUERCUS PRINOIDES WILLD. VAR. RUFESCENS 
VAR. NOV. 
ALFRED REHDER. 
Ix the spring of 1903 Mr. F. G. Floyd drew my attention to a. 
peculiar shrubby Oak he had discovered the year before on the is- 
land of Nantucket. I subsequently visited the island myself and 
found the shrub in question in the locality indicated by Mr. Floyd. 
It grows there in the low thickets of Scrub Oak consisting of Quercus 
prinoides and ilicifolia and covering a large part of the higher rolling 
land between Nantucket and Siasconset, but occurs only as scattered 
bushes between the other Oaks. In general appearance it resembles 
most the Q. prinoides, but differs in the villous and rufous or rather 
fulvous pubescence which covers the under side of the leaves and 
