52 SIR DIETRICH BRANDIS—AN ENUMERATION 
mucilage, which swells in water, the whole forming a thick 
fleshy mass which encloses the lignified placenta. Cells filled 
with starch-grains of different sizes. The 5 abortive ovules at 
the top of the placenta. Hypocotyl short, lying between the 
folded auricles of the cotyledons. Gaertner’s figure, Fruct. i. 
tab. 45, of Caryolobis indica, as already pointed out by Trimen, 
correctly represents the seed of Doona, only the folds of the 
cotyledons are not drawn. It would, however, be out of place 
to substitute Caryolobis for Doona, a name now well established. 
In the germinating seed the cotyledons are on short petioles ; 
in some species the pericarp is thrown off, in others the coty- 
ledons remain enclosed in the winged fruit. The first leaves 
above the cotyledons are always opposite. 
The pith of a leaf-bearing internode has in its circumference 
3-20 resin-ducts, generally unequal in diameter, the larger ones. 
having three times the diameter of average pith-cells. (In 
the seed of D. trapezifolia, Thw., the pith of the hypocotyl 
has 8 resin-ducts in its circumference.) An apical and 2 lateral 
leaf-traces, the latter generally entering the bark a very short 
distance below the node, in some cases in the upper third of 
the internode. Each leaf-trace has 1, sometimes 2-3 ducts in 
the pith. Distinct stipular traces in the species with large 
stipules. In most species large mucilage-cavities in the pith 
as well as in the cortex. In the petiole a semicircle of 3-11 
mostly confluent vascular bundles, each with one resin-duct. 
In the central mass of vascular bundles no ducts as a rule, in 
some instances one. , 
Endemic in Ceylon, 11 species (fully described in Trimen, FI. 
Ceylon, i.), with 1 added (I think correctly) by Pierre. 
1. D. ZEYLANIOA, Thw. in Kew Journ. Bot. iv. (1852) 7; 
Trimen, Fl. Ceylon, i. 119. 
2. D. AFFINIS, Thw. Enum. Pl. Zeyl. (1859) 35; Trimen, Fl. 
Ceylon, i. 120. 
3. D. GARDNERI, Thw. Enum. Pl. Zeyl. (1859) 35; Trimen, 
Fl. Ceylon, i. 121. 
4. D. nervosa, Thw. Enum. Pl. Zeyl. (1858) 35; Trimen, Fl. 
Ceylon, i. 121. 
5. D. rnAPEZIFOLIA, Thw. Enum. Pl. Zeyl. (1858) 35 ; Trimen, 
Fl. Ceylon, i. 121. 
6. D.coxeEsrIrLOnA, Thw. Enum. Pl. Zeyl. (1858) 35; Trimen, 
Fl. Ceylon, i. 122. 
