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Botany. — "Contribution iV". I to the knoir]<'<1<j<' of the Flora of 

 Java' by Dr. S. H. Koorders. 



(Communicated in Ihe meeting of February 2'J, 19U8). 



§ 1. On the oecological conditions, on the means of dissemination and on 

 the geographical distribution of the species of Myricaceae, occurring wild 

 in Java, especially in the higher mountains. 



As has been shown by Koorders and Valeton in their critical 

 systematic investigations of the Mijricacae of Java, contribntion 

 N°. 9 to the knowledge of the Trees of Java, [in Mededeelingen 

 nit 's Lands Plantentnin N". LXl (1903) p. 99— 10.5J tliere are 

 found on this island bnt two wild species, both of which generally 

 become arborescent. These are: 



1. Myrica javanica Bl. (= M. iiincrophyUa Mirb.) and 



2. Myrica longi/oUa Teijsm. & Binnendijk (= M. integrifolia Roxb. 

 = M. Lohbii Teijsm. & Binn.). 



The botanical investigations of the a 1 p i n e f 1 o r a o f J a \- a, 

 which I am now undertaking for the Dutch Ministry of the colonies in 

 the Herbaria at Leiden and at Utrecht, often alFord a not unwelcome 

 opportunity of amplifying and correcting my previous publications 

 on geographical d i s t r i b u t i o n and oecology, which publi- 

 cations were mainly based on my botanical notes of numerous 

 journeys in Java, Sumatra and North-East Celebes. 



An example is presented by the order of the Myricaceae, since 

 in a recent foreign publication ^) observations appear to have been 

 overlooked, which had already been published, partly in 1903 in 

 the above-mentioned Contribution N'. 9 to (he knowledge of the 

 Trees of Java, by Koorders & Valeton '^), and partly in a still earlier 

 small Dutch publication,^) which is very difiiculty accessible abroad. 

 We are here concerned with some observations on the geographical 

 distribution and especially on the means of dissemination of an alpine 

 tree of Java, namely Myriad javanica Blume. 



i) Ernst, Prof. Dr. A., Die ueue Flora der Vulkaninsel Krakatau mil 2 Karten- 

 skizzen uiid 9 Lanclschafls- und Vegetationsbildern. — Zurich 1907. — On p. 01 

 of this very inlereb^ling pubÜcatioii : ''Auch bei früciitefresspuden Tauben sollen 

 sicli im Kropfe und Magen haufig Samen van ansehnlicher Grosse vorfinden und 

 Becgaki gibt an, . . ." (1. c. p. 61). 



-) Koorders k Valeton I.e. in Mededeelingen uit 's Lands Plantentuin LXI(1903) 

 p. 102. 



^) Koorders, Spontane en kunstmatige reboisatie op den Sendoro (Spontaneous 

 and artificial reforestation on the Sendoro) in Tijdschr. v. Nijverheid en Landbouw 

 van Nederl. Indie, Vol. 51 p. 241—287 (with a mapj. 



