Tas. 6766. 
SOLANUM JAMESIL. 
Native of Arizona and Mewico. 
Nat. Ord. Sonanwacex.—-Tribe SonanEx. 
Genus Sotanum, Linn. ; (Benth. et Hook. f. Gen. Pl. vol. ii. p. 6756.) 
Sonanum Jamesii ; humile, glabrum v. sparse pubescens, inerme, caule ramoso 
gracili angulato, foliis petiolatis, foliolis 5-9 ovatis oblongis lanceolatis ovato- 
oblongisve subacutis inferioribus minoribus (minoribus.0 interjectis) stipule- 
formibus 0, cymis pedunculatis paucifloris, corolla profunde 5-loba alba, antheris 
consimilibus obtusis, bacca globosa calyce non inclusa. 
S. Jamesii, Torrey in Ann. Lyc. New York, vol. ii. p. 227, and in Bot. Mer. 
Bound. p. 157 ; A. Gray in Amer. Journ. Sc. ser. 2, vol. xxii. p. 285, and in 
Synopt. Fl. N. Am. vol. ii. p. 227; Baker in Journ. Linn. Soc. Bot. vol. xx. 
p- 503, t. 45. 
The subject of the present Plate has, along with another 
tuber-bearing Potato of the south-western mountains of 
North America (S. Fendleri), excited a good deal of interest 
as affording a new esculent vegetable, and possibly the 
means of improving or rendering disease-proof our culti- 
vated species. Experiments are now being made with these 
and other wild sorts on both sides of the Atlantic, the 
results of which are looked forward to with much interest. 
Of these two American species, the present is very distinct 
from all its congeners, but the other, S. Fendleri of A. Gray, 
to which he subsequently gave the name of S. tuberosum var. 
boreale, is supposed by its author to be a northern form of | 
the S. tuberosum, which in that case extends from Arizona 
and New Mexico to Chili. This latter is also in cultivation, 
and I shall hope to figure it soon. It differs in the angular 
(not deeply lobed) corolla, in the broader leaflets, and in 
there being small interposed ones between some of the 
larger. A good account of finding both these Potatoes is 
given by Mr. J. G. Lemmon, of Oakland, California, under 
the title of “Discovery of the Potato in Arizona,”’ in a 
paper read before the Californian Academy of Sciences, 
January 15, 1883. In this Mr. Lemmon gives much 
interesting information regarding the mountain home of 
JULY Ist, 1884. 
