131 



consist of a number of internodes of which the youngest is 

 swollen to a tuber. The latter bears one leaf at top, in our 

 specimen, however, two, of which one is treble-folded instead 

 of double folded. The additional fold may be the effect of some 

 abnormal pressure. 



Dendrobium sp. 



Coll. J. J. S. et Rant, Tjibeurum near Bandong, Sept. 1911. 

 Habitat Java. 



A non-flowering specimen shows biostrepsis over a distance 

 of 6 cM., causing 5 or 6 leaves to unite their sheaths to one. 



Dendrobium fimbriatum Hook. var. oculatum. 



Coll. J. J. S. in horto bog. 1910. 



Habitat India. 



Biostrepsis in the inferior part of the stem in consequence 

 of which five leaves spring from a joint sheath. In our paper 

 of 1909 : ) we have described the same phenomenon in connection 

 with D. mutabile Lndl. According to Dr. Smith biostrepsis is, 

 in this species and also in those which show the same way of 

 growth, of no rare occurrence, especially if not exclusively in 

 young plants which after the fall of the leaves spring from the 

 .old stems. 



Dendrobium macrophyllnm A. Rich. var. Veitchianum. 



Coll Ch. Joseph in suo horto (Buitenzorg), March 1912. 



Habitat Java (South Preanger). 



Two flowers grown together laterally, all parts normally 

 developed, only two adjacent petals coalesced to one of normal 

 dimensions, which alternates with the labella and like the 

 others shows five ribs. Pedicel and ovary have a normal length 

 but an ovarian cavity is absent. 



Dipodium pictum Rchb.f. 



Coll. Ch. Joseph in suo horto Buitenzorg. 



1) Ann. de Buitenzorg 2e Serie, Vol. VIII, p. 4. 

 Ann. Jard. Bot. Buitenz. 2e Ser. Vol. XIII. 



