454 BOTANICAL GAZETTE [May 
FLoripa.—Sumner, Levy County, T. G. Harbison, June 16, 1917 (no. 3 A, 
‘“‘medium-sized tree in low hammocks’’). 
GerorciA.—Climax, Decatur County, 7. G. Harbison, November 6, 1917 
(no. 7). 
QUERCUS SUBFALCATA Trelease, var. microcarpa, n. hyb. (Q. 
Phellos Xrubra ?).—Leaves oblong-lanceolate to oblong-obovate, 
acuminate at the ends, slightly divided into numerous small acumi- 
nate lateral apiculate lobes, glabrous above, coated below with close 
pale pubescence, often becoming glabrous late in the season, 7~9 cm. 
long and 1.5-2 cm. wide; petioles slender, tomentose, sometimes 
becoming nearly glabrous late in the season. Fruit solitary or in 
pairs, short-stalked, 1 cm. long, with a shallow turbinate cup with 
closely appressed pubescent scales rounded at apex, and inclosing 
about one-third of the ovate acute pubescent nut. 
A small tree with slender reddish branchlets thickly coated early in the 
season with pale tomentum, becoming glabrous in the autumn, and small 
ovate acute glabrous winter buds. 
The parentage and history of this oak are not clear. There can be little 
doubt, however, that it owes its narrow leaves to Q. Phellos, and no other oak 
but Q. rubra L. could produce a hybrid hardy in Massachusetts with the pale 
pubescence of this plant. 
This oak was obtained by the Arnold Arboretum in 1903 from the Wezelen- 
berg Nurseries at Hazerswoude, Holland, under the name of Q. chinensis 
microcarpa, and is now well established here, having begun to produce fruit in 
1909. : 
In September 1913 I found what seems to be the same plant growing in a 
bed of seedlings said to be Q. coccinea planted by Mr. C. S. MANN in his garden 
at Hatboro, Pennsylvania 
Q. subfalcata (Q. PhellosXrubra) Trelease has much larger, less lobed, and 
less pubescent leaves, and larger fruit, and is a native of southern Arkansas 
and eastern Texas. 
/Quercus guadalupensis, n. hyb. (Q. macrocarpa  Xstellata).— 
Leaves oblong-obovate, rounded at apex, gradually narrowed and 
rounded at base, 5- or rarely 7-lobed, the lateral lobes rounded or 
broad and truncate at apex; at maturity thin, bluish green, smooth 
and glabrous on the upper surface, coated below with loose pubes- 
cence, 8-ro cm. long and 4.5-6 cm. wide, with prominent pubes- 
cent midribs; petioles pubescent, 8-10 mm. inlength. Spring leaves 
and flowers not seen. Fruit solitary, sessile or short-pedunculate, 
