41 
§ II. Nuts even , without prominent angles. Leaflets often 
numerous. — Pecan s . 
Carya angustifolia . Juglans angustifolia , Ait. Kew. 
vol. 3. p. 361. J. Pecan , Muhl. in Nov. Act. Soc. Nat. 
Scrut. Berolin., vol. 3. p. 392. J. olivxformis , Willd. Sp. 
PI. 4. p. 457. A fine stately tree, formerly cut down for 
the sake of obtaining a single crop of nuts; remarkable 
for its numerous leaflets and their almost falcate form. 
In Massachusetts, where it has been submitted to culti- 
vation, it never grows beyond the size of a shrub, being 
every year more or less cut down by the effects of the 
severe frosts. 
Carya Pecan. Juglans Pecan , Walter. J. myristicx- 
formis ? Mich. Sylva, vol. 1. pi. 39. This obscure plant 
of Walter, may, perhaps, be nothing more than C. glabra. 
Michaux’s plant was unknown to Elliott. 
Carya amara. Juglans amara , Mich. Sylv., vol. 1. pi. 
33. 
Obs. According to an experiment published in the 
Massachusetts Agricultural Journal, the sap of the But- 
ternut tree ( Juglans cinerea ), is capable of producing as 
much sugar as that of the maple. Four of the trees 
yielded in one day nine quarts of sap, which produced 
H pounds of sugar. 
The Black Walnut, ( Juglans nigra ,) is met with as 
far north as Massachusetts, particularly in the western 
part of the State, as around Northampton. Mr. Emer- 
son says, u Juglans nigra I have found repeatedly as far 
north as Boston. It is in Middlesex, Worcester, and 
Norfolk counties 9 ’ (Massachusetts). 
On the banks of the Sciota, in Ohio, I have seen a 
tree of 6 feet diameter. 
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