PLANTS, FROM BATANES AND BABUYANES ISLANDS. 387 



A certain southward extension of the Fomiosan 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 hanccana Naud., 

 previously known from Formosa and southern China. Eight additional 

 species only, not previously reported from the Philippines, Ischaemum 

 ciliare Ketz., Lilium longi-fiorum Thunb., Elatostema platyphyllum Forst., 

 Chenopodium acuminatum Willd., Pueraria thunhergiana (S. & Z.) 

 Benth., Lysimachia mauritiana Lam., Clerodendro7i trichotomum Tluml).. 

 and Gynura elliptica Yabe & Hayata, can be 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 Ischaemum ciliare, Chenopodium acuminatum, Elatos- 

 tema platyphyllum, and Lysimachia mauritiana are species of wide 

 distribution, and Lilium longifiorum, Pueraria thunhergiana, 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,'^ and Hayata,* and on various supplementary 

 papers published by the latter in the Tokyo Botanical Magazine; on a 

 considerable number of Fonnosan 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 infonnation 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, IlUgera luzonensis (Presl) Men*., Rhamnus formo- 

 sana Matsum., Uncaria -fiorida Vid., Morincla parvifoUa Bartl., Gynura 

 elliptica Yabe & Hayata, Tahernaemontana cumingiana A. DC, Gaul- 

 theria cumingiana A^idal, Isanthera discolor Maxim., Callicarpa formosana 

 Rolfe, Scutellaria luzonica Eolfe, Croton cumingii Muell. Arg., Ville- 

 hrunea trinervis Wedd., Rubus rolfei Vidal (var. liirsutus Hayata, in 

 Formosa), Ainsliaea reflexa Merr., Geodorum, nutans (Presl) Ames, 



'Enum. PI. Formosa, Journ. Coll. Sci. Tokyo 22 (1906) 1-702. 

 * Flora Montana Formosae, 1. c. 25 1" (1908) 1-260. 

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