Babcock (2) found a relationship closely parallel to that 
between teosinte and its putative parents, corn and Trip- 
sacum, in section Jweridopsis of the genus Crepis and drew 
a similar conclusion. The morphological and cytological 
evidence indicates that this section is transitional from 
genus Crepis to genus Iveris, but its phylogenetic posi- 
tion hardly permitted its being considered an ancestral 
group from which Crepis and Iweris were derived. The 
somatic chromosome number of Iweris alpicola and of 
section Iweridopsis is 14, but no other group within the 
genus Crepis has this number. Babcock considered it 
plausible that this section resulted from hybridization 
between Jweris and Crepis at a time when the present 
generic divergencies were not so strongly developed as 
now. In another section, Pyrimachos, the parallel is again 
similar to teosinte, although chromosome studies of this 
section had not been made at the time of Babcock’s 
publication. 
RELATION OF CHROMOSOME KNops 'To 
GEOGRAPHIC DISTRIBUTION 
Reeves (33) reported a relationship between knob num- 
ber and proximity to Guatemala which was statistically 
significant at the .05 level, when all of the 168 varieties 
studied were included in the analysis, and at the .01 
level, when all were included except those from the An- 
dean region. This difference in levels of significance in- 
dicated that the Andean region occupied some kind of 
special position in the pattern; that, were it not for sam- 
ples from this region, the entire relationship would have 
been significant at the .01 level. Randolph agreed that 
a correlation was established, but he then questioned the 
value of the results. Although his objections are ambigu- 
ous, the inference is that the correlation observed might 
be merely one of knob number with low altitude, rather 
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