354 BOTANICAL GAZETTE [MAY 
somewhat unsymmetrical, two or three being close together and sepa- 
rated by narrow sinuses, the others are more widely separated and the 
sinuses are correspondingly wider and deeper. ‘This appearance is 
often due to tearing in mounting, but the natural lobing may be deter- 
mined by tracing the cilia along the margin. The lobes are ovate to 
lanceolate and obtuse. One of 
the lobes is frequently somewhat 
broader than the others, and once 
or twice notched near the apex. 
The midrib is distinct and extends 
a little over one third of the length 
f each lobe. The perianth is 
pilose, and the hairs are usually 
tinted with red. The bract is persistent, and adheres closely to the 
flower when the latter is removed from the catkin. This is the only 
species of this region that does not lose the bract before the maturing 
of the flower. 
Quercus aLBa.—The flowers of Q. a/éa are very symmetrical in 
outline, thus forming a strong contrast to the preceding species. The 
perianth is slightly campanulate, thin, delicate, and five or six-lobed. 
The diameter is 2-3™". The lobes are small, broadly oval to ovate, and 
obtuse. The midrib is prominent and distinct nearly to the apex of 
the lobes. The perianth is densely pilose, the hairs being long and 
matted, rendering it difficult to spread the flower without tearing. 
UERCUS PLATANOIDES.—The flowers of Q. platanotdes are only 
about one half the size of those of Q. a/éa, being 1-2", but resemble 
them closely in other respects. The 
texture of the perianth is thicker. It 
is rotate rather than campanulate, 
= and forms a flat six-lobed disk at 
, the base of the stamens. The lobes 
are broadly oval to ovate, and sepa- 
rated by broad and obtuse sinuses. 
The midrib is distinct nearly to the 
apex of each lobe. The perianth is pilose, but the hairs are not so 
thickly matted as in Quercus alba. 
Quercus Prinus.—The perianth of Q. Prinus is small, thin, and 
deeply lobed. The diameter is from 2-2.5™". It resembles the flowers 
of Q. aléa, but the sinuses are much deeper and narrower, and the 
Fic. 2.—(Q. alba. 
Fic. 1.—Q. acuminata. 
bes 
Fic. 3.—Q. plaia- 
nodes, 
