Il.—THE GENUS RHIZOPHORA IN BRITISH 
GUIA 
ALLEYNE LEECHMAN. 
During a detailed study of the Flora of the sea- shore, under- 
taken by the writer during the past three years on a two- mile 
stretch of the coast in the immediate neighbourhood of George- 
town, the capital of British Guiana, it has become evident that ~ 
there are three distinct forms of the genus Rhizophora present 
on the area under ees Their more obvious distinguish- 
ing characters are: 
Form shies ete simple, few-flowered (2-3, occasion- 
y 4); radicle up to 30 cm. in length; fruiting 
eee . (=. Mangle, L.) 
Form ii.—Inflorescence much branched, many-flowered ; 
owers as in Form 1., but slightly smaller; radicle, 
in Form i . fruiting much less profuse. (= R. 
Pavone: Leechman. ) 
not so yellow externally; radicle up to 65 cm. in 
length, usually curved at the upper third; peri- 
carp stout and curved. (= (?) R. racemosa, G. I’. 
W. Meyer.) 
Forms i. and ii. are common in the area studied, and all 
three are eke defined. They grow closely together on the 
same groun und, and retain. their distinguishing characters. 
Form iii. is, however, rare in the area (sea shore near George- 
town and banks of the Essequibo river) and is evidently depau- 
perate in the conditions prevailing. The contrast between 
Forms i. and ii. in fruiting habit is very striking—Form i. often 
sets fruit abundantly, while Form Tey althou h eet 
** usually fow-flowered ”. > “Another species—R. racemosa, Meyer 
—is mentioned by him, but not described. : 
s long and delightful account of Rhizophora 
Mangle leaves no doubt as to the identity of my Form i. 
**Pedunculi communes axillis insident” solitarii ”” a writes, 
oo interdum triflori. et obsolete trigoni’’,t and of the 
on ‘seed ”? which he states is the longest’ part o of the fruit, 
longa”. Hi 
bait Ecicces americanae,” p. 14], pl. Ixxxix. 
+ The italics throughont are mine.—A. L. 
