of Cuphea ( Lythraceae ). 165 
The tufts of hairs on the base of the filaments of C. rigidula 
are doubtless of use in restricting access to the honey. 
In the whole genus Cuphea a peculiar mechanism exists to 
aid in the distribution of the seeds. After fertilization a mass 
of tissue just below the ovary grows rapidly and forces the 
placenta backwards, so that it splits the ovary wall and calyx 
tube, and finally projects from the posterior side of the flower 
bearing the ripening seeds. 
The pollination and insect visitors of C. setosa i and the 
question of the occurrence or absence of the section in 
Trinidad, are points well worth the attention of West Indian 
botanists. 
In conclusion, I must acknowledge a grant made by the 
Royal Society towards the expenses of the expedition on 
which the type of C. epilobiifolia , var. Caquetae was collected. 
I am indebted to Professor Koehne for a list of the specimens 
referred by him to the various species and varieties of the 
section Heteranthus. 
Bibliography. 
1. Koehne, E. : Berichtigung der von D. P. Barcianu gemachten Angaben 
liber die Bliithenentwickelung bei den Cupheen. (Botanische Zeitung, 
1875, PP- 302-7.) 
2. Kerner, A. : Die Schutzmittel der Bluthen gegen unberufene Gaste. (Fest- 
schrift der K. K. Zoolog.-Botan. Gesellschaft in Wien, 1876.) 
3. Koehne, E. : Lythraceae in Martii Flora Brasiliensis, xiii, 2, pp. 214-223. 
4. Engler, A. : Versuch einer Entwicklungsgeschichte der Pflanzenwelt seit der 
Tertiarperiode. Leipzig, 1879, 1882. 
5. Koehne, E. : Lythraceae in Engler’s Botanische Jahrbiicher, vols. i-vii. 
6. Eggers, H. : Die Insel Tobago. (Deutsche Geogr. Blatter, Bremen, xvi 
(1893), pp. 1-20.) 
7. Burkill, I. H. : Report on two Botanical Collections made ... in British 
Guiana. Introduction. (Trans. Linn. Soc.,ser. 2, Botany, vol. vi, pt. i.) 
