TREES AND SHRUBS. 



QUERCUS AEKAKSANA, Sarg. 



QlTERCTJS ARKANSANA, n. Sp. 



Leaves broadly obovate, slightly three-lobed or dentate at the wide apex and cuneate at the base, 

 or on sterile branches oval to ovate, acute or rounded at the apex, full and rounded at the base and 

 laterally undulate lobed, the lobes terminating in long slender mucros ; when they unfold slightly 

 tinged with red, thinly covered with pale stellate hairs persistent until summer, the midribs and 

 veins more thickly clothed with clusters of long straight hairs, and at maturity thin but firm in 

 texture, glabrous with the exception of small clusters of axillary pubescence, light yellow-green on the 

 upper surface, paler on the lower surface, from 5 to 8 centimetres long and from 5 to 7 centimetres 

 wide, or on sterile branches often from 12 to 14 centimetres long and from 6 to 7 centimetres wide, 

 with slender light yellow midribs, thin primary veins, and prominent veinlets ; petioles slender, 

 coated at first with matted clusters of pale hairs, becoming glabrous, or sometimes slightly pubes- 

 cent during the season, from 1.5 to 2 centimetres in length ; stipules linear, scabrous, about 5 milli- 

 metres long, deciduous. Staminate flowers in aments covered with clusters of long pale hairs, from 

 5 to 6 centimetres in length ; calyx thin and scarious, usually four- or rarely three-lobed, the lobes 

 rounded or acute, thinly covered with long white hairs ; stamens usually four ; anthers ovate-oblong, 

 apiculate, dark red ; pistillate flowers on stout peduncles, hoary-tomentose like the involucral scales ; 

 stigmas dark red. Fruit ripening in its second season, solitary or in pairs, on stout glabrous 

 peduncles 4 or 5 millimetres long ; acorns broadly ovate, rounded at the apex, slightly stellate- 

 pubescent especially below the middle, light brown, obscurely striate, from 6 to 8 millimetres long 

 and from 14 to 15 millimetres in diameter, their shell lined with pale nearly white tomentum, the 

 base only enclosed in the flat cup pale pubescent on the inner surface and covered by the closely 

 appressed scales obtuse at their narrow apex, red on the margins and thinly covered with pale pubes- 

 cence, those of the upper rank small, erect, inserted on the top of the cup and forming a rim 

 around its inner surface ; seed light chestnut-brown. 



A tree, when crowded in the forest often from 20 to 25 metres high, with a tall trunk and stout 

 ascending branches forming a long narrow head, or when growing in the open and uncrowded by 

 other trees rarely more than 12 metres high with a short trunk sometimes 3 decimetres in diameter, 

 covered with thick nearly black bark divided by deep fissures into long narrow ridges broken on 

 the surface into thick closely appressed scales, small spreading smooth gray branches forming a 

 low round-topped head, and slender branchlets thickly coated early in the season with pale stellate 

 hairs, becoming light gray-brown or reddish brown and still pubescent or nearly glabrous in 

 their first autumn and darker-colored and glabrous the following year, and gracefully drooping 

 leaves. The winter-buds are ovate, acute, and covered with thin light chestnut-brown slightly pubes- 

 cent or nearly glabrous scales. Flowers late in March or early in April. Fruit ripens in October. 



Low woods, Fulton, Hempstead County, Arkansas, B. F. Bush, April 17, 1905 (No. 2365) ; low 

 rolling sandhills about four miles north of Fulton, here common over a considerable area but ap- 

 parently very local, B. F.Bush, May 21, 1909 (No. 5096), June 10, 1909 (No. 5820), B. F. Bush 

 and O. S. Sargent, October 4, 1909 (No. 2939 type), C. S. Sargent, April 3, 1910. (All in herb. 

 Arnold Arboretum.) 



aches this Oak most 



