283 



ase 



• Tavolucre of the fruit very thick, splitting freely nearly or quite to the bu:>c . 

 middle lobe of the staminate calyx at least twice as long as the two lateral broader 

 ones ; seed sweet and delicious : nut ridded and ancular. 



f-^^flets 5 ; bark shaggy. 



(2.)^H. OVATA (Mill), {yitglans ovata. Mill., Gard. Diet, 

 No. 6, (1759); Juglansalba, Michx., Flor. Bor. Amer., ii., 193, 

 (1803), not Linnaeus; Carya alba, Nutt.) 



(3) H. Mexicana (Engelni.) Carya Mexicana, Engelni., in 

 Hemsley, Bot. Cent. Amer., iii.. 162). This I place here provis- 

 sionally, suspecting it to belong to this group, but staminate cat- 

 J'^ins have not been described. 



f tLeaflets 7 to g ; (rarely, some leaves produce 5.) 

 ifBark close, foliage very pubescent and odorous. 



(4-) H. ALBA (L.). Juglans alba, L., Sp. Plant, p. 997, 

 (^753) ; jfuglanstomcntosa, Lam., Encyc. Meth., iv., 504, (1797) ; 

 Carya tomentosa, Nutt. Dr. Torrey has described a var. integ- 



of this species in Bot New York, ii., p. 182, t 100, char- 



ifolia 



acterized as having nearly entire leaflets and smaller fruit I 



have not seen any specimens with as entire leaflets as those fig- 

 ured. 



Var. MAXIMA, (Nutt.). {Carya alba, Nutt., var. maxinia^'^-^^^ 

 J^utt, Genera, ii., 221, has fruit twice the ordinary size. Rafin- 

 esque called it H. maxima. (Alsog., 1. c.) 



X :j:Bark shaggy ; foliage puberulent. 



(5-) H. SULCATA, (Wind.). Juglans stilcata, Willd.,* Berl. 

 Baumzucht, p. 154, t 7, 1796; Carya sulcata, Nutt Besides 

 the eastern stations reported for this tree we can add from Pro- 

 cessor Porter's Herbarium, Alexandria, Huntingdon County, and 

 Sellersville, Bucks County, Penn. 



Involucre of the fruit thin, not splitting freely to the base ; lobes f of the 

 staminate calyx nearly equal in length, the lateral ones broader ; bark close. 



tNut compressed-globular, or compressed-pyriforni, smooth or slightly ridged. 



:|:Xut small, thin-shelled ; leaflets 5 to 7. smooth. 



(6.) H. MICROCARPA (Nutt.) Carja microcarpa, Nutt, 

 Genera, ii.^ p. 221.) This must be regarded as a very critical 



- *Casimir DeCandolle cites Duhamel as author of this name, but I have not 

 been able to find it in his writings. If he did describe the tree it was probably 

 before Willdenow's book was published. 



tin H, mlcrocarpa the middle lobe is sometimes considerably longer than the 

 lateral ones. 



