TREES AND SHRUBS. 



CARTA MEGACARPA, Saeg. 



Carya megacarpa, n. sp. 



| Leaves five-foliate, with the slender petioles from 3 to 3.5 centimetres in length ; leaflets lanceo- 

 late to oblanceolate, long-pointed and acuminate at the apex, gradually narrowed and unsymme- 

 trical at the base, finely serrate with incurved teeth, short-petiolulate ; when they unfold covered 

 below with minute yellow caducous scales, and at maturity glabrous with the exception of small 

 axillary tufts of pale hairs, the three upper leaflets from 1.8 to 2 decimetres long and from 4 to 6 

 centimetres wide, and about twice as large as those of the lower pair. Aments of staminate flowers 

 from 7 to 8 centimetres in length, slightly villose, their bracts linear, acuminate, covered with long 

 pale hairs ; bract of the flower long-pointed and acuminate, villose, twice longer than the villose 

 calyx-lobes ; stamens from four to six ; anthers yellow, villose above the middle ; pistillate flowers in 

 short-stalked spikes, their involucres only slightly angled, covered with pale yellow hairs, the bract 

 acuminate, twice longer than the bractlets and calyx-lobes. Fruit broadly obovate, rounded at 

 the apex, abruptly cuneate below or gradually narrowed into a short stipe-like base, slightly flat- 

 tened, from 2.5 to 3 centimetres long, from 2.8 to 3 centimetres wide, and from 2.5 to 2.8 centi- 

 metres thick; involucre tardily dehiscent to the middle usually by one or two, or occasionally by 

 three, sutures, from 3 to 5 millimetres thick ; nut broadest toward the rounded apex, or occasion- 

 ally acute at the apex, gradually narrowed and acute at the base, compressed, more or less promi- 

 nently angled, pale, from 3.5 to 4 centimetres long, from 3 to 3.5 centimetres wide, and from 2.5 

 to 2.8 centimetres thick, the shell from 3 to 3.5 millimetres in thickness ; seeds small and sweet. 



A tree, with close gray bark and comparatively stout glabrous branchlets reddish brown at the 

 end of their first season and dark gray-brown the following year. Winter-buds ovate, acute, from 

 7 to 8 millimetres long and from 5 to 6 millimetres in diameter, the outer scales glabrous, the 

 inner puberulous. Flowers in New York the last week of May; fruit ripens in October. 



New York : woods, valley of the Genesee River in Seneca Park, below Rochester, Munroe 

 County, B. H. Slavin (Nos. 32 ,type, 74, 107) ; Pinnacle Range, Rochester, R. E. Horsey, October, 

 1911, March, 1912 (No. 507); Ithaca, Tompkins County, W. R. Dudley. Illinois: Tunnel Hill, 

 Johnson County, B. F. Bush, October 8, 1912. North Carolina : seashore near Wilmington, 

 New Castle County, C. S. Sargent, October, 1894. South Carolina : Bluffton, Beaufort County, 

 C. S. Sargent, October, 1894. Florida : Tallahassee, Leon County, Florida, G. V. Nash, August, 

 1895 (No. 2343); river bank, Palatka, Putnam County, C. S. Sargent, November, 1898; Eustis, 

 Lake County, G, V. Nash, July, 1895 (No. 2270) ; Bradentown, Manatee County, C. S. Sargent, 

 February 24, 1911, J. II Simpson, May, 1911. Missouri : Mt. Hope Cemetery, Webb City, 

 Jasper County, E. J. Palmer, October, 1911 ; Doniphan, Ripley County, B. F. Bush, and C. S. 

 Sargent, October 4, 1912. 



From the common form of the northern Pignut Carya pom ma . aa I understand that species, Carya megacarpa dif- 

 fers in its much larger, less flattened fruit with a thicker involucre which splits earlier and more deeply, in its larger 

 nuts with thicker shells, stouter hranchlets, and larger winter-buds. This appears to be a common southern tree, and 

 its occurrence in western New York, where it is rare, is interesting. There are no specimens of Carya in the Arbore- 

 tum collection from western Pennsylvania, Ohio or West Virginia, but this tree should be looked for in that part of the 

 country and southward to the Gulf of Mexico. Pignut fruits in the Arboretum collection collected at Van Buren, Craw- 

 ford County, Arkansas, by Mr. G. M. Brown (No. 22), which are 5 centimetres long and 4.5 centimetres wide, with 

 an involucre 5 millimetres thick splitting nearly to tbe base by three sutures, are perhaps of this species, although the 

 branchlets are puberulous and the winter-buds are smaller than those of the New York trees. C S. S. 



