144 ANDERSON: EMBRYOGENY OF MARTYNIA LOUISIANA 
protuberances (Fic. 4, P), the primordia of the corolla lobes, . 
which are alternate with those of the calyx. Arising simul- 
taneously with the corolla lobes (FIG. 5, P) and alternate with 
them are the epipetalous stamens (Fic. 5, A). Fics. 6 and 7 
are other sections of the flower shown in Fic. 5. Fic. 6 is a 
median section through the primordia of two lobes (P) of the » 
corolla, while Fic. 7 is a median section through the primordia 
of two stamens (A). A comparsion of these two figures will give 
the relative size of the parts at this stage. There are primordia 
Fics. 8-13. Development of the flower (con.), X 30. B, bract; b, 
bracteole; S, calyx lobe; P, P1, corolla lobe; A, A?, stamen; O, pistil; L, pla- 
centa; C, ovarian cavity. 
of five stamens, but very early the one between the posterior 
pair becomes aborted (Fics. 10 and 14,A’). The pistil is the last 
cycle to appear, and in Fic. 5 is seen as a broad protuberance (O). 
In Fics. 5-9, at B, are seen cross sections of the bract which 
curves over the flower. These figures are of the flower as viewed 
from the adaxial side. And in the same figures at b, are seen 
sections of the two bracteoles. The two bracteoles arise as 
