PLANTS, FROM BATANES AND BABUYANES ISLANDS. 387 
A certain southward extension of the Formosan flora was to be ex- 
pected, but this is exceedingly weak in comparison with the northward 
extension of the Philippine flora. But two genera are represented in 
the collection, previously unrecorded from the Philippines, Erythraea, 
represented by E. spicata (L.) Pers., an introduced species in Formosa, 
and Phoenix, represented by a new variety of Phoenix hanceana Naud., 
previously known from Formosa and southern China. Eight additional 
species only, not previously reported from the Philippines, Iscliaemum 
ciliare Retz., Lilium longiflorurn Thunb., Elatostema platyphyllum Forst., 
Clienopodium acuminatum Willd., Pueraria thunbergiana (S. & Z.) 
Benth., Lysimachia mauritiana Lam., Clerodendron trichotomum Thunb.. 
and Oynura elliptica Yabe & Hayata, can he considered as having 
reached the two groups through Formosa. Of the above list but a single 
species, Gynura elliptica Yabe & Hayata, was previously known only from 
Formosa, while Iscliaemum ciliare, Chenopodium acuminatum, Elatos- 
terna platyphyllum, and Lysimachia mauritiana are species of wide 
distribution, and Lilium longiflorurn, Pueraria thunbergiana, and Clero- 
dendron trichotomum are Japanese types extending to southern China, 
Formosa, and the two last to Luzon. 
My knowledge of the Formosan flora is based on the published works 
of Matsumura and Hayata, 3 and Hayata, 4 * and on various supplementary 
papers published by the latter in the Tokyo Botanical Magazine; on a 
considerable number of Formosan plants in the Herbarium of this 
Bureau, received from Tokyo, and on the material in the Herbarium of 
the College of Science at Tokyo, which I had an opportunity of examining 
in June, 1907, in company with Dr. Hayata. The paucity of Philip- 
pine types in the Formosan collections at Tokyo is very striking, in 
comparison with the abundance of northern and continental types, and 
this character of the Formosan flora has been emphasized by Dr. Hayata 
in his latest publication. It seems evident, from information at present 
at hand, that the Formosan flora is not closely related to that of the 
Philippines, although due to the proximity of Luzon and Formosa, a 
certain number of species common and confined to Formosa and the 
Philippines are found. A list of these species is given below : Bergia 
glandulosa Blanco, Illigera luzonensis (Presl) Men - ., Rhamnus formo- 
sana Matsum., Uncaria floricla Vid., Morinda parvifolia Bartl., Gynura 
elliptica Yabe & Hayata, Tabernaemontana cumingiana A. DC., Gaul- 
theria cumingiana A 7 idal, Isanthera discolor Maxim., Callicarpa formosana 
Rolfe, Scutellaria luzonica Eolfe, Croton cumingii Muell. Arg., Ville- 
brunea trinervis Wedd., Rubus rolfei Vidal (var. Iiirsutus Hayata, in 
Formosa), Ainsliaea reflexa Merr., Geodorum nutans (Presl) Ames, 
3 Enum. PI. Formosa, Journ. Coll. Sci. Tokyo 22 (1906) 1-702. 
‘Flora Montana Formosae, 1. c. 25 19 (1908) 1-260. 
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