PLANTS OF SOUTHERN NEW JERSEY. 397 



Order JUGLANDALES. 



Family JUGLANDACE^. Walnuts and Hickories. 

 Key to the Species. 



a. Husk not splitting. 



b. Fruit globular, petioles puberulcnt. Juglans nigra, p. 397 



bb. Fruit oblong, pointed, petioles pubescent with viscid hairs. 



/. cinerea, p. 397 

 aa. Husk splitting when fruit is ripe. 



b. Husk of fruit thick, splitting freely to the base, foliage and twigs 

 pubescent. 

 c. Leaflets 3-5, bark shaggy, splitting off in long plates. 



Hicoria ovata, p. 398 

 cc. Leaflets 7-9, bark close. H. alba, p. 398 



bb. Husk of fruit thin, splitting only at the top, foliage glabrous at ma- 

 turity. 



c. Leaflets narrow, lanceolate 7-9, bark close, nut sub-globose. 



H. cordiformis, p. 399 



cc. Leaflets oblong or ovate lanceolate 5-7, bark splitting in shaggy 



plates, nut nearly globose. H. microcarpa, p. 399 



ccc. Leaflets obovate, or oblong 2>-7, bark close, nut obovoid or oblong. 



H. glabra, p. 398 

 JUGLANS L. 

 Juglans nigra L. Black Walnut. 



Juglans nigra Linna;us Sp. PL 997. 1753 [Virginia and Maryland]. — Knies- 

 kern 28. — Britton 219. 



Rich woodlands; frequent in the northern counties and occa- 

 sional in the Middle district within our limits. iNIany trees have 

 undoubtedly been introduced, and probably all those in Cape 

 May County come under this head. 



Fl. — Early May to- late May, when the leaves are partly ex- 

 panded. Fr. — Autumn of the first season. 



Middle Dw^nV/.— Farmingdale, Oaklyn (S), Sewell (S), S- of Millville.* 

 HICORIA Rafinesque. 



Fruiting and Flowering Data. — ^Flowers appear after the 

 leaves have unfolded. Fruit ripens the first season. 



* Juglans cinera Linnaeus, Sp. PI. Ed. H. 1415. 1763 [North America] is 

 frequent in woods in the northern counties, but within our limits known only 

 from the statements of Knieskern and Willis, who record it respectively from 

 Ocean and Monmouth and Burlington Counties, where it seems hardly likely 

 to have been native. 



