WALNUT FAMILY. 391 



J. Sieboldiana, Maxim. JAPANEf5E W. Tree of medium to large size, 



■VNJth pubescent shoots and leaves; leaflets 11-17, large, elliptic-oblong 

 and acuminate, sessile, sometimes not strictly opposite, rather coarsely 

 serrate ; fruits in long clusters of 10-20, inversely top-shaped when the 

 husk is on, the shell thiu and very little furrowed, the nude nut l'-2' 

 long. Japan. 



J. nigra, Linn. Black W. Large tree, with dark rough branches ; 

 stalks and shoots not clammy, minutely downy ; leaflets smoothish, 

 ovate-lanceolate, serrate ; fniit spherical (rarely ovoid and sometimes the 

 husk striped). Mass., S. and W. 



* * Husk friable^ separating ichen dry from the roundish and smoothish 



thin-shelled nut. 



J. regia, Linn. English AValnut, so called, but native of Asia ; leaf- 

 lets oval, entire, smoothish ; fruit ripens sparingly in Middle States. 



2. CARYA, HICKORY. (Greek name of the AValnut, applied to these 

 North American trees.) Flowers in rather late .spring ; nuts fall in 

 autumn. 



* Sterile catkins in a sessile cluster; leaflets 18-15, short- stalked ; nut 



edible. 



C. olivaefdrmis, Nutt, Pecan. Along rivers, from Ind. and la., S. ; 

 leaflets oblong-lanceolate, taper-pointed ; nut cylindrical-oblong, olive- 

 shaped, the seed delicious. Now cult, in the S. 



* * Sterile catkins 3 or more toe/ether on a common peduncle; leaflets 

 sessile or nearly so, of 5-9 or rarely 11-13 leaflets-; nut globular or 

 short-oval. 



-t- Nuts sweet-tasted and edible (the hickory-nuts of the market) ; the 

 husk splitting into 4 thick and hard valves; buds large, of about 10 

 scales. 



C. alba, Nutt. SnELLnARK or SnAcnARK H. Bark of old trunks 

 very shaggy, separating in rough wide strips ; inner bud scales becoming 

 very large and conspicuous on the young shoot; leaflets 5, the 3 upper 

 much larger and lance-obovate; nut white, the meat high-flavored. N. 

 En-., W.'"and S. 



C. sulcata, iS'utt. Western or Big Shellbark H., Kingnut. Dif- 

 fers from the foregoing in lighter-colored heart wood, 7-9 leaflets more 

 downy beneath ; fruit with very thick husk 4-ribbcd above the middle, 

 and larger yellowish or dull-white nut (sometimes 2' long) mostly with 

 a point at both ends. N. Y., S. W. 



C. tomentdsa, Nutt. Mocker Nut or Whiteheakt H. Bark rough, 

 but not si)littiiig off in strips; shoots and lower surface of the leaves 

 woolly-downy when young ; leaflets 7-9, lance-obovate, or the lower 

 lance-oblong ; fruit with very thick hard husk, and globular nut (not 

 flatfish on the sides) brownish, very thick-shelled, hardly flt to eat. N. 

 Eng., W. and S., ci^mmonly on rich hillsides. 



C. microcarpa, Nutt. Bark somewhat shaggy, but separating in nar- 

 row thin i>lates ; foliage glabrous ; fruit rather small and thin-husked, 

 edible, but not rich. N. Y. to Del. and 111. Foliage and fruit smaller 

 than C. alba. 



t- ■*- Nuts bitter, in a rather thin and friable husk, ichich splits only at 

 the top, or tardily to near the base ; bark on the trunk close ; bud scales 

 falling early. 



C. porcina, Nutt. Brown or Broom H., Pignut. Bark of trunk 

 rough and furrowed, but not sepai-ating in plates ; bud scales about 10, 



