CIE TM - AGS i i a a e 
BRITISH SPECIES OF THE GENUS MNIUM. 55 
TaBLE XXXV. (see § 35). 
Length of the nerve in the leaves of the 10th interval. (Nerve 
reaching the summit, +; a trace of connection between nerve 
and summit, +; nerve ceasing below the summit, — .) 
Minimal | Maximal 
length of the nerve. | length of the nerve. 
VGL ERE AR MUR P aubglobosum. i Sii... — 
iranta i Ee A 5 cuspidatum Sail... oc. + 
MFT Tp o o Ee RRS — Aornim Le vex + 
E ens ello rne — orthorrhynchum l...a.. + 
RAC HOR: oe — | Ennoiatum . aod ms + 
orthorrhynchum  ........ EE | Zostratum.- ae a + 
EROR D a o nr | ERs S25 Mee ly wate + 
CUSDIGTE S iso's tis» eh + | BAAD LITE. 0 e oin + 
Gn rp PRESE S ha + nuam 23e. + 
LSOTLITI a E 5 cus. ie ES l pU 3... a tn R 
TABLE XXXVI. (see § 36). 
Tooth at the summit of the leaves in the 10th interval. 
A tooth at the summit of the leaves in the 10th interval exists always in 
all the species, except in two of them, viz. :— 
1°. Mn. punctatum. The tooth exists ordinarily, or there is a trace of 
a tooth. The absence of a tooth is rather rare. The first leaf 
above the longest one is variable in the same way. In the second 
leaf above the longest one and further upwards I always found 
a tooth. 
2°, Mn. subglobosum. . Never a terminal tooth in the 10th interval, nor 
in the two leaves above the longest one. In a few cases a trace of 
a tooth exists in the third leaf above the longest one. A tooth may 
oceur at the summit of the phyllomes of the perianth. 
See, with reference to this character, the specific tables of gradation 
(Tables XV.-XXIV., B). 
