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var. tenuior Miq. — C. montana var. validior Miq. I did not find 

 represented in the Herbaria at Leiden and at Utrecht from regions 

 outside Java. 



^ 2. Distribution in Java. The var. validior Miq. I found 

 represented in the Herb, at Leiden and Utrecht bv the following 

 specimens: 1) collected bv Junghuhn according to his autograph note 

 on the top of mount Kawi [the second label "Oengaran" which evi- 

 dently was attached to the specimen at a later date, independently of 

 Junghuhn, cannot, in my opinion, refer to this authentic specimen, 

 for on mount Oengaran not a single Casuarina occurs wild] ; 2) 

 specimens from Java (without further indications (from Tkysm. & Dk 

 Vriesb and 3) a fruiting specimen from Java with the remark "Alpes 

 orientales" (leg. WaitzV In Herb. Kds the var. validior Miq. is 

 only represented by specimens from Mt. Wilis at 2000 m. altitude 

 and from Mt. Ardjoeno at 2100 — 2400 metres; only the specimens 

 from mount Ardjoeno are characteristic, for the determination of 

 the variety of the specimens from the Wilis is not quite certain. 

 The authentic specimen of Junghuhn from the top of Mt. Kawi (in 

 Herb. Leiden) I found to have internodes of about 1 cm. long with a 

 diameter of 1 — \\ mm., and with 10 — 11 vaginal teeth. The specimen 

 of Waitz generally had 11 vaginal teeth. The Javanese examples of 

 \ar. tenuior Miq. are only represented in the Herbaria at Leiden and 

 Utrecht by a few specimens of Korthals and of Tkysm. & De 

 Vriese from "Java" (without further indications) and by a fruiting 

 specimen (Kds. 37348 f ? Comin. ex museo bot. Hort. Bogor.), 

 collected fruiting in October 1899 in Eastern Java on Mt. Tengger 

 near Ngadisari at 2000 metres altitude. In the extensive alpine 

 Casuarina- forests of Mt. Rahoen-Idjen in Eastern Java I found 

 only var. tenuior Miq. whereas var. validior appeared to be 

 wholly wanting there. On Mt. Wilis in Central Java 1 found 

 in the Casuarina-forests almost exclusively var. tenuior Miq., but 

 there nevertheless a small number of individuals belonging to var. 

 validior Miq. were also found; the form with internodes l 1 /, mm. 

 thick, which is characteristic for the top of Mt. Kawi, could not 

 be found on Mt. Wilis. The youngest twigs of var. validior Miq., 

 occurring on the latter mountain, where at most 1 mm. in dia- 

 meter. Junghuhn mentions (Java. I (1853) p. 551), that C. mon- 

 tana first occurs on the Lawoe and thence eastwards covers 

 the tops of all the mountains, which rise above 1500 metres, 

 but is wholly absent from Western Java. As a result of my 

 own observations I can confirm this statement. Concerning the 



