164 MORPHOLOGY OF CAREX AND OTHER MONOCOTYLEDONS. 
explained as the prolongation or continuation of . secondary axis, and 
ese instances the latter takes the form of a seta. But one of 
to the wing-like process which exists in the main axis of the inflo- 
rescence; and which is peculiar to this speeies; though something 
similar occurs in several 8. 
The structure of the genera Hlyna and Kobresia most remarkably 
tn stintctorily supports the present view of the nature of the seta 
envelopes the axilla a eat t (first Awe or leaf of the seeondary axis), 
which is opposite and alternate to the outer bract. In the axil of the 
oe is hs ovary, and in front of this the 7 ree continued 
stamens in one row. In obresia the svike is compound, but there is 
a similar structure of the female flowers, though the axitiary growth 
rarely bears stamens. The upper bracts bear stamens only, as in the 
genus Carex. The flower of Elyna is sic really” pga thei 
consisting of a lower female flower and an upper male, and i 
early example of a monccious assumin ihe form of an s eeeude 
flower. It is very remarkable that no instance that I am aware of 
of the axillary raets ir some genera of t r Gramines, ¢.9-, 
ria ne A gon pubescens. In these Grasses the 
bi of the infloreseence, aX bye insertion, are furnished with a 
oe clasping, two-nerved bra n Andropogon pubescens only the 
- pi a branches are furnished with ibeisdly tinted b bracts. No doubt 
ean lor a moment be entertained as to the single nature of the bracts in 
ese instances, for the position of each bract is in sprig alternate and 
