

V- 



TREES AND SHRUBS. 



CARYA PORCINA, Xutt. 



Carya porcina, Nuttall, Gen. ii. 222 (1818). 



Juglans porcina, Michaux, f., Hist. Arb. Am. i. 206 (in part) t. 9, f . 3 & 4 (1810). 



Juglans porcina ficiformis, Pursh, Fl. Am. Sept. ii. 638 (1814). — W. P. C. Barton, Com- 



pend. Fl. Phila. ii. 180. 

 Carya glabra, Spach, Hist. Veg. ii. 179 (probably not Juglans glabra Miller) (1834). — Gray, 



Man. 412. — Torrey, Fl. JST. Y. ii. 182 (in part) t. 101. 

 Hicdria glabra, Britton, Bull. Torrey Bot. Club, xv. 284 (in part) 1888). — Sargent, Slim 



N. Am. vii. 165 (in part). — Britton & Brown, III Fl. i. 487 (in part), f. 1158. 



Leaves five- or very rarely seven-foliate, from 2 to 3 decimetres long, with glabrous or rarely 

 pubescent or villose petioles ; leaflets lanceolate, acuminate at the ends, and finely serrate with 

 straight or incurved teeth pointing to the apex of the leaflet ; when they unfold densely covered 

 on the lower surface and sparingly on the upper surface with yellow scales, ciliate on the margins 

 and glabrous or slightly pubescent on the midribs, and at maturity yellow-green, glabrous above, 

 and glabrous or pubescent on the midribs and often furnished with conspicuous tufts of white 

 tomentum below, 1 the terminal leaflet from 1.3 to 1.5 decimetres long and from 5 to 7 centimetres 

 wide and raised on a glabrous or pubescent petiolule 6 or 7 centimetres in length, the lateral leaflets 

 sessile, those of the upper pair about the size of the terminal leaflet and two or three times larger 

 than those of the lower pair ; staminate flowers in short-stalked pubescent aments from 5 to 6 

 centimetres long, yellow-green, villose, their bracts long-acuminate, slightly villose, much longer 

 than the calyx-lobes; stamens four, filaments villose above the middle; anthers yellow; pistillate 

 flowers in few-flowered spikes, coated with hoary tomentum like the lanceolate acuminate bracts 

 much longer than the bractlets and calyx-lobes. Fruit obovate, compressed, rounded at the apex, 

 gradually narrowed below and often abruptly contracted into a stipe-like base, varying in length 

 from 1.5 to 3.5 millimetres and in width from 2 to 3 centimetres ; involucre usually not more 

 than from 1.5 to 2.5 centimetres in thickness, opening generally by one or by two sutures and 

 often remaining nearly closed ; nut compressed, obovate, slightly obcordate or acute at the apex, 

 gradually narrowed to the base, not ridged, light-colored with a hard thick shell and a small 

 sweet seed. 



A tree, from 20 to 30 metres high, with a trunk covered with close light gray ridged bark, 

 small spreading branches forming a narrow head, and glabrous reddish branchlets marked by pale 

 lenticels. Winter-buds ovate, acute, light brown, glabrous, from 8 to 10 millimetres long, from 

 5 to 6 millimetres wide, the inner scales covered with close pubescence. Flowers in New Eng- 

 land the middle of May ; fruit ripens in October. 2 



This tree, which is one of the common Pignuts of the eastern states, is abundant in New England and New York, 

 and ranges southward to Delaware, the District of Columbia, Gloucester County, Virginia, and along the Appalachian 



1 The only really villose tree of this species which I have seen is growing naturally in Seneca Park, Kochester, New York. 

 On this tree the petioles and rachis are thickly covered with matted pale hairs, the leaflets at the end of May an 

 above and floccosely pubescent below, and in the autumn the petioles, rachis and the midribs below are pubescent. 



2 Mr. Faxon's drawing reproduced in our plate is made from a large tree growing on the estate of Bayard Thayer 

 Worcester County, Massachusetts. 



