348 BOTANICAL GAZETTE [May 
two subsections: TERNATA, of eight species; and CicuTaArRIA, of 
three species. The material investigated consists of rhizomes of 
B. ramosum and B. lanceolatum var. angustisegmentum, of the sec- 
tion Euspotrycuium, to which B. Lunaria also belongs; of B. 
obliquum and B. ternatum var. intermedium, of the subsection 
TEeRNATA; and of B. virginianum, of the subsection CICUTARIA. 
Rhizomes of these five species were examined in serial sections 
for the presence of such axillary buds as have been described by 
Gay 
2.—Transverse sections of a branching rhizome of Botrychium lanceolatum 
var. a at sot x, original xylem of the stem and leaf trace; mx, xylem fo 
after the injury; ph, phloem; X12. 
Lanc. In all these species, such buds are uniformly present in 
rhizomes of all ages, and it may be assumed that they are of con- 
stant occurrence in all species of the genus. Their origin and 
development will be considered later. 
VASCULAR CONNECTIONS OF THE BRANCHES 
ROEPER’S (13) figures represent rhizomes of B. Lunaria with 
2-7 lateral branches. Hote (6) figured a single branching speci- 
men of the same species in longitudinal section, and pointed out 
that in this case the branch stele connects with the trace of the leaf 
