xi, c, 5 Merrill: Reliquiae Robinsonianae 247 
flora, yet at the present time a fairly high percentage of species 
enumerated are known only from Amboina. Due to the proxim- 
ity of other islands, and to the backward state of our knowledge 
of the flora of the Moluccas as a group, it is only reasonable to 
expect that an intensive exploration of the neighboring islands 
will yield most of the species that are now known only from 
Amboina, 
The flora is, of course, a typical Malayan one. It contains 
some Australian types, but most of these are rare or at the 
best are nowhere dominant, quite as similar Australian types are 
found in the Philippines. Among these may be included Flin- 
dersia, Eucalyptus, Stackhousia, Schizomeria, and, perhaps, re- 
presentatives of a few other genera. Like other parts of the 
Moluccas, Celebes, and New Guinea, the Amboina flora presents 
a striking similarity to that of the Philippines, not only in its 
species, but also in its genera. In one of Doctor Robinson’s 
letters, he mentions the fact that so far as the general type of 
the vegetation was concerned, and for that matter most of the 
genera and very many of the species encountered, he might as 
well be in the Philippines as in Amboina. In the course of the 
study of this material a number of species have been detected 
that were previously reported only from the Philippines, among 
these being Thoracostachyum lucbanense Kukenth., Abelmoschus 
mindanaensis Warb., Gyrinopsis brachyantha Merr., Dysoxylum 
euphlebium Merr., Polypodiuui merrillii Copel., Litsea perrottetii 
F.-Vill., Hypoestes laxiflora Nees, Pratia ovata Elm., Erycibe 
lateriflora Elm., and Aglaia multifoliola Merr. The Amboina 
species Callicarpa pentandra Roxb. proves to be indentical with 
Geunsia hookeri Merr., of the Philippines, and Roxburgh’s specific 
name is hence adopted. Polygala polifolia Presl, previously 
known only from Luzon, the Caroline Islands, and New Guinea, 
appears in our Amboina collections, as do Clerodendron macros- 
tegium Schauer, previously known only from the Philippines and 
Ceram, and Stackhousia intermedia Bailey var. philippinensis 
Pamp., a characteristic Australian type, previously known from 
Luzon and Guimaras in the Philippines, Yap, in the Carolines, 
and the only known representative of the family north of 
Australia. 
The discovery of a representative of the genus Gyrinopsis in 
Amboina, the genus otherwise known only from the Philippines, 
adds another name to the already long list of genera that are 
known only from the Philippines and the islands to the south and 
southeast of the group, including : Cubilia, Gyrinopsis, Sararanga, 
