RYDBERG: SOLANUM IN MEXICO AND CENTRAL AMERICA I7I 
19. Solanum michoacanum (Bitter) Rydberg sp. nov. © 
S. Jamestt subsp. nayaritense michoacanum Bitter, Repert. 12: 
®. 1913. 
_ In my opinion, this is more closely related to S. Jamesii e., 
to S. nayaritense, differing from the former in being decidedly 
more pubescent, in the sparingly hirsute calyx, and in the larger 
corolla about I2 mm. long. The question may be asked: Why 
not accept Bitter’s views and include all these species in S. 
Jamesui? They areall closely related toit. Ifso, we must include 
also S. pinnatisectum Dunal and S. srenophyllidium Bitter, which 
are also closely related to it and not based on better characters. 
S. michoacanum is known only from the type collected at 
Pungauto, near Morelia, Michoacan, Arséne 28906. 
26.3, PINNATISECTUM Dunal, in D.C. Prodr. 13': 40. 1852. 
This species is characterized by its narrower and more numer- 
ous leaflets, glabrous inflorescence and. the articulation of the 
pedicels, which is higher up. Bitter* proposed two varieties, 
pentazygum, the typical form, and eperenoey ey of very little 
value 
MICHOACAN: Mrs aoe. 
QUERETARO: Agniel 10380, 10467, 10580. 
21. SOLANUM STENOPHYLLIDIUM Bitter, Repert. 12: 51. 
1913. ae 
This species is closely related to the preceding, but differs 
in the still narrower, and few, usually 5, leaf-segments. Palmer 
611 from Jalisco is the type. 
22. Solanum nicaraguense Rydberg sp. nov. 
perennial, with stolons and probably. tubers; stem 1-2 
dm. high, maa es Cla or glabrate; leaves 7—12,cm. long, 
odd-pinnatifid; segments 3-7, subsessile, elliptic or fane-eliipie: 
glabrous or aca hirsute above, more pubescent beneath, 
the terminal one 3-5 cm. long, the lateral ones niet smaller; 
intermittent segments rare and very small; pseudo- stipular 
leaves minute or wanting; inflorescence 2-forked; peduncle 2-5 
cm. long; pedicels I-1.5 cm: long, sparingly hirsute, the arti- 
culation far below the middle; calyx puberulent, 3-4 mm, long, 
the lobes triangular or ovate, acute, shorter a the tube; 
* Repert. 12: 49-50. 1913. 
