6 . ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. 
perianth ; the double polypetalous corolla; the numerous hypogynous extrorse stamens with 
more or less enlarged, often cuneate, connectives; and the convex receptacles bearing 
numerous apocarpous pistils. The gamopetalous species with the pistils united into a 
single unilocular, multi-ovular ovary and with large, many-seeded fruit had been formed 
into the genus Monodora; while the genus Miliusa had been provided for the species with 
flowers in which the petals of the outer row are very small and sepaline in character, 
while the inner petals are large, more or less gibbous and united towards their bases, the 
stamens having their connectives pointed and not truncate at the apex. A little later 
than the date of M. DeCandolle’s Monograph, the abberant plants with flowers in which 
the perianth is replaced by a large deciduous bract, with perigynous stamens, and with 
concave floral receptacles in which the pseudo-inferior carpels are buried, had already 
found a home in the genus Eupomatia of R. Brown, The large accessions of new 
material which have been received both from the New and Old Worlds during the years 
that have elapsed since the publication of the genus Hupomatia, have contained but few 
forms strikingly different from those which form the bulk of the order as DeCandolle. 
left it; and many of them might, by a little modification of generic diagnoses, have 
been included in genera already existing. During this period of sixty years there have 
been published about twenty-five new genera which appear worthy of being maintained; 
and of these the most strikingly divergent from the Anonaceous type are Diésepalum and 
Tetrapetalum, in which the floral symmetry is not trimerous, and Znantia, where the 
outer whorl of the corolla is absent. Of these twenty-five genera, four are tropical 
American, viz., Oxandra, A. Rich., Cympopetalum, Benth., Heteropetalum,' Benth,, and 
Sapranthus, Seem.; four are African, viz., Cleistochlamys, Oliv., Enantia, Oliv., Clathros- 
permum, Planch., and Piptostegia,’ Oliv. ; and the remaining seventeen, viz., Cyathostemma, 
Griff., Sagerwa, Dalz., Popowia, Endl., Sacecpetalum, Benn., Cyathocalyx, Champ., Pheeanthus, 
H. f£. & Th., Spherothalamus, Hook. fil., Disepalum, Hook. fil. Tetrapetalum, Miq., Ellipeia, 
H. £. & Th. Kingstonia, H. f. & Th., Alphonsea, H. f. & Th., Drepananthus, Maing., 
Mezzettia, Bece., Eburopetalum, Becc., Enicosanthemum, Bece., and Marcuccia, Bece., are 
Indo-Malayan. : : = 
During these same sixty years the whole order has been critically examined 
by Sir Joseph Hooker and the late Mr. Bentham in their Genera Plantarum, by 
M. Baillon in his Memoires, in Adansonia,* in his Dictionaire de ta Lotanique, 
and in his Histoire Des Plantes®; also more recently by Dr. Prantl in Engler 
and Prantl’s P/flanzenfamilen. Messrs. Hooker and Bentham have arranged the whole 
family into five éribes by characters derived from the form and arrangement of the petals 
and stamens: while M. Baillon has arranged it under four series, two of which (the 
third and fourth, containing a single genus each) are separated from the others by charac- 
ters ‘taken from the arrangement of the carpels; the other two (the first and second) 
being separated from each other by the form of the outer row of petals. The second 
contains only two genera, while the first contains twenty-five; and for the grouping’ © 
of these twenty-five genera of the first series into sub-series, M. Baillon depends on 
almost the very characters on which Messrs. Bentham and Hooker 3 
-e] f * +4. 
the whole family into ¢ribes, rely tor dividing 
ae ee 
(1) &-(3) These genera are reduced to Pheanthus by M. Baillon. 
(2) Reduced to Popowia by Baillon. : | (4) Vol. VIII. | (5) Vol I 
