TILIACE®. 183 
African genera Desplatsia and Duboscia ; and we have made the 
total number of distinct genera thirty-eight, in describing recently 
the two exceptional types So/msia' and Vasivea? 
The latest authors who have completely studied this group, Brn- 
THAM and Hooker,‘ have divided it into seven tribes,‘ which we have 
thought necessary to reduce to four, by uniting two and two, those 
which are only founded upon the difference of form presented by 
the internodes of the receptacle, in the interval which separates the 
insertion of the corolla from that of the androceum.’ The special 
character of these series consequently become the following :— 
L Browntowima. — Calyx gamosepalous, campanulate, with 
three, four or five valvate divisions. Internodes little developed 
or wanting in the interval of the petals and the androceum. Petals 
coloured. Anthers short, generally globular or didymous, with the 
lines of dehiscence confluent at the summit.—(7 genera.) 
IL. Trieæ.—Calyx with distinct sepals. Petals coloured, inserted 
against the stamens’ or separated from their insertion by a more or 
less elongated internode, glandular in its upper portion, and in this 
ease furnished within their base with a dimple or plate, which 
moulds itself upon a corresponding face of the receptacle.— 
(21 genera.) 
III. Procxixx.—Calyx with distinct sepals. Petals not at all, or 
but little developed, sepaloid, often in the form of tongues or teeth. 
Anthers short, subglobular or didymous, dehiscing by longitudinal 
clefts.—(4 genera.) 
JV. Ezæocarreæ.—Calyx valvate, or more rarely imbricated. 
Petals wanting or incised, lobed. Anthers linear, dehiscing from 
the summit for a variable distance, often inconsiderable. Andro- 

3 Gen., 228, ord. 33. 
by an almost complete picture of the history of 
4 Viz., Brownlowia, Grewiee, Tiliee, and 
this family. Tiliaceæ is there divided into 
eleven sections, whose differential characters do 
not seem to us sufficiently indicated to preserve 
them as distinct. On the other hand, Mollia and 
Trichospermum are separated from it in order to be 
connected with Biraceæ, while Belotia is kept 
among the Tiliacee; and although Berrya 
forms there a section of these latter, Brown- 
lowia, Pentace, Pityranthe, and Christiana ave 
rejected and placed among the Sterculiaceæ, 
where we have not been able to leave them. 
1 In Adansonia, x. 34 (1871). 
2 Loc. cit., 19 (1872). 
Apeibeæ (forming by their union a first series of 
Holopetaleæ) ; Prockieæ, Sloaneæ, and Elæocar- 
pee (which together form the series Hetero- 
petaleæ). 
5 See, relative to the value of this character, 
Adansonia, x. 191. 
5 Character particular to the subseries Hu- 
liliee. 
7 This is the characteristic of Grewieæ, which 
cannot always be certainly distinguished from 
the preceding. 
