1909] WIELAND—WILLIAMSONIAS OF MIXTECA ALTA 433 
C. The flower of C. Jenneyana, with only 1o bipinnate members, as well as - 
various other greatly reduced and small types of flowers of Cycadeoidea. 
A hypothetical flower of Cycadeoidea, with a staminate disk of 5 bipinnate 
members or staminate fronds (cf. jig. 1). 
Fics. 1-4 
2 The El Consuelo staminate disk composed of 10 or 12 pinnate fronds. 
vy 
A derivative of the El Consuelo disk, with only five pinnate fronds forming 
the Campanula (cf. fig. 2). 
A hypothetical campanula derived from the preceding by reduction of the 
Synangial number to two and finally one, borne interiorly (fig. 3). 
