On the Floral Organogeny and Anatomy of 
Brownea and Saraca. 
BY 
MARCUS M. HARTOG, D.Sc., M.A., F.R.U.I. 
With Woodcuts 14, 15, and 16. 
HE Caesalpinieae have been scarcely investigated from 
■A any but a purely systematic point of view; a study of 
the floral ontogeny of Cassia by Rohrbach 1 and of Amherstia 
by Griffith 2 are the only two extant. The free flowering 
of several specimens of Brownea coccinea , B. grandiceps , and 
Saraca indica , L. (, Jonesia Asoca , Roxb.) in the plant -houses 
of Queen’s College, Cork, has led me to investigate these 
two closely allied genera with a view to fill up a gap in our 
knowledge. Both genera belong to the group Amherstieae, 
characterised by the excentric position of the gynaeceum on 
the posterior lip of the calyx-tube next the vexillary petal, 
and with the dorsal suture towards the tube. 
Brownea coccinea (from which B. grandiceps differs in no 
essential point) has shortly stalked flowers in short capitate 
racemes, often from defoliated axils and on the old wood. 
The lower bracts are distichous and equitant when young, 
empty or with their axillary flowers developing late ; the 
upper are narrower, spathulate, arranged in a f spiral, and all 
axillant to flowers. Each pedicel bears two closely connate 
bractlets forming an obconical sac, opening by an apical slit 
(antero-posterior). The flower shows only four sepals, owing 
to the connation of the posterior pair ; allowing for this they 
1 Bot. Zeit. 1879. 
[Annals of Botany, Vol. II. No. VII. November 1888.] 
2 Notulae. 
