126 S. Kurz — A Sketch of the Vegetation of the Nicobar Islands. [No. 3, 



morta and Katchall ; on the first-named island here and there also on the 

 hills along the outskirts of the tropical forests. Gantedl, inc. Katch. 



114. Semecarpus heterophylltts, Bl. — Frequent in the beach- 

 forests of Katchall, entering the coral-reef-forests ; also Karnicohar (Nova- 

 ra 210 ; Jelinek 30 — -pep or boab, inc.) 



Var. /3. pubescens, paniculse magis fulvo-tomentosse, folia subtus 

 puberula, reticulatione densiore. — Great Nicobar (Novara 209 ; Jelinek 

 251). 



N. B. I have not seen authentic specimens of Blume's species, but the 

 Nicobar (and Andaman) plant agrees with Sumatran specimens thus named 

 by Miquel. The leaves vary much in size, and in saplings they are up to 1\ 

 ft. long and of proportionally thinner texture and looser net-venation. The 

 pubescent form, collected by Jelinek, stands in the same relation to the 

 original form as my S. albescens to the glabrous form which I incor- 

 rectly named S. heterophyllus in my Pegu Report. This tendency to become 

 pubescent is peculiar to a great number of tropical trees, and is not attri- 

 butable, as some may suggest, to a drier or sunny station, but seems to be 

 rather idiosyncracy. For we often find the two states growing side 

 by side in the densest shade of the tropical forests. This is the case, 

 for example, with Micromelum pubescens, while the perfectly glabrous 

 and the almost villous-pubescent form (which I formerly distinguished as 

 V. pubescens) of Vanqueria spinosa grow similarly associated in the dry hot 

 forests of Prome. Other examples of the same phenomenon are afforded by 

 Ga/ruga pmnata and G. mollis, Chiclcrassia tabular is and Ch. velutina, 

 Scltrebera Swietenia and Sch. pubescens, Solarrhena Godaga and H. 

 ant id y sent erica, Trewia nudiflora and the glabrous form, JBerrya Amonilla 

 and_Z?. mollis, Grewia loevigata and its pubescent form, Walsura trijuga and 

 W. pubescens, Amoora JRohitulca and A. Aphanomyxis, Terminalia catappa 

 and its pubescent form, and numerous others. In two only of these, viz., in 

 JBerrya and Micromelum, have I observed real intermediate and therefore 

 connecting states. In most of these cases not only are the vegetative parts 

 affected but the calyx and the corolla also. 



GONNABAGJE^:. 



115. Rourea eloribunda, Miq. — In the tropical forests of Kat- 

 chall ; also Nankowry (Novara 211 ; Jelinek 140 — majing, inc.) A tree 

 3 — 4 feet in girth. 



115-6. Rourea Wallichiaka, Planch. ? (Gonnarus mimosoides, A r hl. 

 Symb. III. 87). — Nicobars (teste Vahl.) 



116. Connartjs Maingati, Hf. — Great Nicobar (Novara 237 ; Jeli- 

 nek 260 — el, inc.). 



