ANDERSON: EMBRYOGENY OF MARTYNIA LOUISIANA 143 
the flower grows it becomes broader and somewhat oblique 
at the apex (Fics. 2 and 3, X). On the adaxial side of 
the primordium of the flower there appears a protuberance 
or ridge, the upper lobe of the calyx, extending about one third 
the distance around it (Fic. 3, S). Very soon the other Icbes 
of the calyx appear as small protuberances similar to the ad- 
axial lobe. The individual lobes appear as separate protuber- 
ances, but later grow up as a tube except on the abaxial side of 
Fics. 1-7. Development of the flower. Fics. 1-3, X 45; Fics. 3-7, 
x 30. B, bract; X, flower primordium; S, S’, calyx lobe; P, corolla lobe; A, 
stamen; O, pistil; b, bracteole. 
the flower. At this point, the two lower lobes of the calyx are 
united only at the base and in the mature flower overlap. The 
adaxial lobe of the calyx is the largest, and in the bud covers the 
other lobes (Fics. 4 and 7, S$). The calyx lobe, shown atS’ in 
Fic. 4, is the edge of one of the lateral lobes and appears smaller 
than it really is. Just within the calyx lobes are seen small 
