39 
The two Indian species, M. smilacifolium and M, serratulum, with 
elongated corolla lobes, are evidently nearly related and in their 
floral characters show greater affinity to Beccari’s plants from 
New Guinea and the Kei Islands than they do to the species from 
the Malay : oe Sumatra, Java and Borneo. It is unfortunate 
that the Admiralty Islands specimen, which has been named 
M. cordatum, is ed ae flowers, but from its foliage it shows 
considerable resemblance to M. ovatum, from the Kei Islands. 
M. macrolobum, M. ovatum and M. ‘cordatum appear to form a 
closely allied group. 
purposes of systematic arrangement, the genus can be 
divided into two groups on the relation of the lobes of the corolla 
to the corolla tube. This division, which may not be an unnatural 
one, is here adopted and set out in the following key. 
CLAVIS SPECIERUM. 
Corollae segmentes tubo longiores vel tubum aequantes. 
Folia trinervia, marginibus serratis vel integris. 
Foliorum marginibus integris vel superne plus minusve 
serratis ; corollae tubus 1 mm. — lobi 1°5 mm. longi 
. M. smilacifolium. 
Foliorum marginibus versus apicem itt serratis ; corollae 
tubus 2 mm. longus, lobi 2°75 mm. — 
. M., serratulum. 
Folia triplinervia, marginibus integris 
Corollae tubus 15-1°75 mm. long s, lobi 3 mm. longi; 
antherae e tubo corollae aliquatenus sp 
a. um. 
Corollae tubus 2-2°5 mm. longus, lobi 3° 5- re 3 mm. longi ; 
antherae in tubo corollae omnino si home 
. M. macrolobum. 
Corollae segmentes tubo breviores. 
Folia trinervia, basi rotundata margine mere Int 
€ 
Folia trinervia vel paullo sino basi sabi, ethane Py 
margine integra vel superne serr: 
Corollae tubus 2 mm. longus, ih 0°5 mm. longi 
M. nervosum. 
Corollae tubus 2°75-3 mm. longus, lobi 1°5 mm. longi 
7. M. Horsfieldi. 
Species non satis notae. 
“Folia late ovata, basi cordata, 5-nervia 8. M. cordatum. 
Folia anguste elliptica, elongata, basi cuneata, trinervia 
coriaceum, 
Folia elliptica vel ovato-elliptica, basi cuneata vel rotundato- 
cuneata, tri tri pliner rvia oe eee 10. M, Zi. 2. 
15475 A2 
