GENERA RADAMAEA AND NESOGENES. 313 
from Madagascar. Acharitea differs from Nesogenes in the “calyx fructifer 
auctus et fructus pericarpium membranaceum.” The description below of 
N. Dupontii practically embodies the diagnosis of the genus, and Plate 14, 
together with the tigure in Balfour’s ‘Botany of Rodriguez,’ is sufficient 
pictorially to convey an idea of the kind of plants under consideration. 
There are four, or perhaps five, species now known. 
1. NESOGENES EUPHRAXIODEs, 2. JC. Prodr. xi. (1847) 703. Drake del 
Castillo, Flore de la Polynésie Francaise, 151 (1893). 
Nesoqenes euphrasioides, A. Gray, in Proceedings of the American Academy 
of Sciences, vi. (1862) 51. 
Myoporum ? euphrasioides, Hooker & Arnott, Botany of Beechey’s Voyage, 
67 (1832); Guillemin in Annales des Sciences Naturelles, 2"* série, 
Botanique, vil. (1837) 242. 
Buchnera ? Chamisso in Kotzebue’s Voyage of Discovery (1815-1818), 
English Translation, iii. 222. 
Herba erecta, rigida, fere undique hispida, caulibus basi lignescentibus. 
Folia spathulata, apice. rotundata, deorsum attenuata, vix unquam 2:5 em. 
longa. 
Paumotu, Low or Dangerous Archipelago, and Ducie Island, approximately 
between 1209 and 150° west longitude, and between 15° and 20° south 
latitude: Whitsunday Island (Vahitai), Beechey ; Bow Island (Hao), Hinds, 
1841 ; Barclay ; Chain Island (Апай), Cuming n. 1400 ; Romanzoff Island 
(Tikei), Chamisso, 1830 ; Ducie Island, Cuming n. 1400 ; Coral Islands, 
Wilkes. These specimens are partly of the Hookerian Herbarium ; partly 
of the Benthamian. 
The geographical distribution of Nesogenes euphrasioides has been 
misunderstood and assumed to include three widely separated areas; partly 
in consequence of A. de Candolle having confus ed Pentecost Island of the 
New Hebrides with Whitsunday Island ot the Low Archipelago ; partly 
because Romanzoff Island has been mistaken for Romanzoft Islands in the 
Radak range of the distant Marshall Archipelago. Drake del Castillo, in 
the place cited above, records the plant from the Iles Pomoto, Lay and 
Collie, and King Island (Taiaro) Wilkes. The labelling of the Kew speci- 
mens of JVesogenes euphrasioides requires some further elucidation, as some 
bear the name of the collector, others the name of the donor. Captain F. 
W. Beechey was the Commander of H.M.S. ‘Blossom’ оп a Voyage of 
Discovery in 1825 to 1828. G. T. Lay was Naturalist to the Expedition, 
and A. Collie was Surgeon, and their names are usually coupled as the 
collectors of the botanical specimens. R. B. Hinds was Surgeon on H.M.5. 
‘Sulphur,’ commanded by Sir Edward Belcher on a Voyage around the 
