304 MR. H. N. DIXON ON А 
incrassato, tuberculis magnis, seriebus transverse positis dense grosse corrugato- 
scabro. 
Cetera ignota. 
Hab. Jungle, Sekong, 22 Apr. 1913 (No. 84). 
A very marked and curious species, quite distinct in its leaf-structure 
from any others of the Oriental species of the genus known to me. The 
habit is somewhat that of S. strictus, Mitt. from Ceylon, but the structure is 
quite different. It is also separated from all the allied plants in having the 
inner rows of cancellina-cells reaching far above the leaf-base. The structure 
of the leaf-border is very peculiar ; it is thickened, to the width of several 
rows of cells, and is furnished, both back and front, with densely, regularly 
placed transverse rows of nodules, which are not simply papillose thickenings 
of the cell-walls, but are rather of the nature of tubercle-shaped cells, them- 
selves often somewhat papillose on the surface. This gives the margin a 
closely pectinate-serrate appearance ; the tubercles on the back of the nerve 
are similar, but in this case are smooth. 
САГУМРЕВЕЗ Hampel, Bry. jav. Coconut palm, Sandakan (No. 29 B). 
The Bornean plant is separated by Bescherelle as C. Sundeanum, but Fleischer 
unites the two, no doubt rightly. Mr. Binstead’s plant, in fact, inclines to 
C. Hampei rather than to С. Sandeanum, in so far as the form of the 
cancellina gives any distinction. 
C. Ковоп, Besch. in Ann. sc. nat., Bot. 8"* sér. i. (1895) p. 284. 
Syn. C. Thwaitesii, Besch. op. cit. р. 306. 
Rotting wood near Tenom (No. 152). 
Fleischer has remarked оп the close relationship of С. Fordii and 
C. Thwaitesit, considering C. Fordii as only a subspecies of the latter. 
I think it is necessary to go further and unite the two. The character of 
the inner cancellina-margin, having the juxta-costal rows shorter than the 
median ones, while in C. T'hwaitesii they are longer, cannot be held to have 
much weight in these species any more than in the group of C. Hampei ; 
moreover, the type of Bescherelle’s C. Fordii (Hongkong, leg. Ford) does 
not show by any means a uniformity in this respect. Nor does the geo- 
graphical distribution lend itself to their segregation from one another, for 
if C. Thwaitesii be maintained, Mr. Binstead’s No. 152 must certainly be 
referred to it rather than to С. Fordii, having a much more robust habit, 
with the сапсеШпа of C. Thwaitesii; while I have a South Indian plant which 
must certainly be placed under C. Fordii rather than С. Thwaitesii! The 
number of rows of marginal cells, exterior to the teniole at the shoulder, is 
no doubt greater in the Ceylon plant (C. T'hwaitesii), but it varies appreciably 
even in Bescherelle's type, and is certainly not correlated with the other 
eharaeters attributed to that species. A plant of Mr. Binstead's from 
