148 RYDBERG: SOLANUM IN MEXICO AND CENTRAL AMERICA 
rous or nearly so, very oblique at the base, acute 
on the upper margin, semi-cordate on the 
eh es ee ees a ee se 11. S. agrimonifolium. 
1. SOLANUM TUBEROSUM L. Sp. 185. 1753 
The cultivated potato is apparently not wild in North 
America. In the United States it is found occasionally on gar- 
bage dumps and waste places, but rarely persists more than a 
single season. From reports, it seems to be more common in 
Mexico and Central America. In the United States National 
Herbarium there are but two Mexican specimens and in the col- 
lections of the New York Botanical Garden only one from Costa 
ica. These are: 
VERA Cruz: (Orizaba) Rose & Hay 5700. 
NvuEvo LEon: Palmer 938, in part.* 
Costa Rica: Kuntze 2296. 
2. SOLANUM LONGIPEDICELLATUM Bitter, Repert.11:457. 1912 
This species is closely related to S. tuberosum, differing in the 
smaller flowers, thinner leaves and acute instead of acuminate 
calyx-lobes. I see no reason for regarding the var. pseudopro- 
phyllum Bitter, I. c. 458, as anything but an individual variation. 
Bitter himself was inclined to regard the specimen representing 
the type number Pringle 8602 in the Munich herbarium as be- 
longing to the variety, or at least approaching it. The following 
specimens belong here: 
Mexico (Federal District): Pringle 8602, 8571. 
MEXICco (State): Pringle g142. 
GUANAJUATO: Dugés 417 A. 
3- Solanum Papita Rydberg sp. nov. 
A perennial, with s irahanesy stolons and tubers; stems 
herbaceous, 1-2 dm. high, terete, slender, puberulent with 
short acute hairs; eaeéas as spimiatifd 4-1c cm. long; rachis 
aneney winged, sparingly pubescent, principal leaf-segments 
* This number in the National Herbarium consists of two plants; one be- 
longs to S. tuberosum, the other to S. Fendleri. To the latter belongs also 
Palmer 937. Maybe the specimens have been mixed. 
