MR. G. D. HAVILAND: REVISION OF THE NAUCLEESR. 17 
Nauclea is there replaced by Adina; and the changes from 
Nauclea to Adina are in some respects curiously analogous to 
the changes from the Malayan species of Uncaria to the Asian 
species with sessile fruit and filiform bracteoles. 
The branches of several species of Mauclea present hollow 
swellings for the use of ants. One of these species, JVauclea 
strigosa, Korth., differs from all other species in having the 
calyx-tubes united ; but the superior portion of the calyx-tube 
does not thicken in the same way as it does in Sarcocephalus, 
and the fruit, instead of showing a number of depressions with 
dividing ridges, shows a number of conical elevations. The 
seeds are nearly as in other species of Nauclea ; but the cocci 
cannot separate and fall away, and the endocarp becomes 
thickened and pith-like towards the top of the cell. 
Although the falling of the calyx-lobes is often associated 
with the inability of the growing corollas to pass their crowded 
tips, yet in Nauclea Chalmersii the tips are subulate and not at 
all dilated, and they are said to be deciduous. Sarcocephalus is 
the only other genus in which deciduous calyx-lobes occur. 
The genus Adina stretches from the North of India to Japan: 
one species descends the Peninsula of India. and crosses to 
Ceylon; another species descends the Malay Peninsula and 
reaches Java; there is also a peculiar species in Malpina and 
another in the Philippines. The genus Adina is remarkable 
for the difference of inflorescence in the different species. There 
is only one, however, with simple terminal peduncles. The 
genus approaches both Nauclea and Cephalanthus in character. 
It differs from Nauclea not only by the filiform interfloral 
bracteoles, but also iu the slender style with small clavate 
stigma, the anthers not included but seated on the mouth of 
the corolla-tube, the persistent calyx-lobes, and also in the 
bracts being small and not seated just below the flower-head. 
The African species {dina microcephala differs from the others 
in having its leaves ternately whorled; I have not seen the 
fruit, it may perhaps be indehiscent. The ovules are only three 
or four in each cell, and in this respect, as well as in the 
character of the peduncles and bracts, it has a resemblance to 
Breonia. The specimens which I have included under. Adine 
microcephala present great differences in the length of the leaves 
and of the calyx-lobes. 
The genus Cephalanthus is closely allied to Adina ; it differs 
LINN. JOURN.—BOTANY, VOL. XXXIII. c 
