496 PROF. PERCY GROOM ON THE 
Fic. 1. 
NUN ee ee ee eee ee 27... 12 mm. 
T---------- 13... 6 mm. су 
WY тетет тт е тр r9... -50 
714...850 
9 
e---- 32... 
10:50 
(7 - -------------35... 6:50 
(ТР 
Ч. 
©. 
lc 24000 
M. >> 
ГД LI 
] ' ‚ braneh scars. 
р ‚4 branch scars. f 
we ee ene wne 95...8 
Two complete periods in Calamatina varians, var. inconstans, in the Ravenhead Collection, 
Liverpool Museum, showing variations in size and shape of leaf-sears in successive 
whorls. 
In each series the right column of figures refers to the length of the internodes as given by 
Kidston, the left hand column gives the internode number. x8. 
