1900] BRIEFER ARTICLES 355 
lobes are more spatulate or obovate. There is also a variation in the 
number of lobes; in the majority of flowers examined there were from 
six to eight, but occasionally one was found with as many as ten. The 
midrib is distinct at the base, but disappears near the apex of the lobes. 
The perianth is sparingly 
Lo ee 
pilose, with the lobes ciliated 
by long slender hairs, giving 
it a very shaggy appearance. 
QUERCUS MACROCARPA.— 
Q. macrocarpa has a very char- 
acteristic flower. It is more 
deeply lobed than any of the 
preceding species, the sinuses 
extending nearly to the point of attachment. It is 
the largest of this group, having a diameter of 3-3.5"™". 
The lobes are long and very narrowly linear, five or 5... 50) vubra; 
six times as long as they are wide, and are frequently 
slightly curled or twisted, making it difficult to separate them from the 
filaments of the stamens. The midrib is distinct to the apex of the 
lobes. The perianth is pilose, the hairs being very long and shaggy. 
QUERCUS RUBRA.—The flowers of Q. rubra are much larger than 
any of the other forms studied, having a diameter of 4-4." Tey 
are campanulate and indistinctly five or six-lobed. As the flowers 
develop the stamens push through the narrow throat and 
tear the perianth into uneven segments varying in number 
from two to six. The midrib is distinct and slightly thick- 
ened at the base, but becomes indistinct about half way to 
the apex of the lobes. The perianth is nearly smooth or 
slightly pilose, and the lobes are thinly ciliate with long 
airs 
QUERCUS COoccINEA.—(Q. coccinea has a perianth that very 
closely resembles the one just described, although the other 
characters of the tree are more frequently confused with Q. 
velutina than with Q. ruéra. The perianth is campanulate 
and slightly six-lobed, with a diameter of 3.5-4™". Its four or five 
Stamens as they develop tear it into two or three irregular segments. 
The midrib is distinct at the base but very soon disappears. ©” 
Perianth is pilose, and there is a thicker row of cilia along the margin 
than was found in Q. rubra. 
Fic. 5.—Q. macrocarpa. 
+ 
Fic. 7,—0Q, 
coccinea, 
