ON THE VEGETATIVE PROPAGATION OF TWO 
SPECIES OF TAENIOPHYLLUM FROM JAVA 
BY 
W. DOCTERS VAN LEEUWEN. 
With Plate XII and XIII. 
INTRODUCTION. 
Vegetative propagation is a somewhat rare phenomenon in 
epiphytic orchids. Also Massart') was struck with this during his 
visit to our archipelago. He expresses his surprise on finding that 
e.g. species of Zaeniophyllum are unable to form adventitious 
buds at their aerial rootlets. Some orchids are known to be 
capable of producing new plants in their inflorescences. This is 
often seen for instance in the commonest Javanese variety of 
Dendrobium, D. crumenatum Sw., likewise in D. mutabile Lindl. 
and many other species of this genus?). In Phalaenopsis Schil- 
leriana Rehb. f.*) this formation of gemmae in the inflorescence 
is a regularly recurring’ phenomenon, frequently indeed repla- 
cing florification. Also in a species of Ceratostylis I found young 
plants in the inflorescences, in the wild forest of Kamodjan, 
near Garoet. 
Jensen *) describes vivipary in the often cultivated Phalae- 
nopsis amabilis Bl. But in all these cases the young plants 
ee — attached to the motherplant and nothing but chance 
acid gasecs manual. VIlth Edition, p. 38 and 659. 
: VAN Eaonincne VAN — = bij Phalaenopsis amabilis. De 
isel Natuur, — Iv, . 56. 
‘SEN. Vj 8 Plakompi amabilis. De — —— Jaarg. 
