ee He & 
Seon 
EE ie nae a oe TA mt ee ee TEM eg yy rk 
sd Hsiee seu . 
ee 
ree 
325 
Key to mangrove-swamp plants. 
a. Palms. 
4. With stout, creeping stems. Nipa fruticans. 
66. Stems slender, erect. ~ Oncosperma jilamentosa. 
aa. Dicotyledons. 
6. Lys. spiny; small, scarcely woody shrubs; sometimes prop- 
rooted; fls. white or blue. Acanthus ilicifolus. 
66. Lys. not spiny; usually trees; stems hard and woody. 
c. Pneumatophores present. 
d. Lvs. alternate, compound; bark black and coar- 
sely fissured. Aylocarpus Granalum. 
dd. Lys. opposite, simple. : 
e. Lvs. whitish or tomentose beneath; wood 
coarse grained; bark smooth and light colored 
with greenish inner layer. 
Avicennia officinalis. 
. Lys. smooth green beneath; wood fine grained. 
f. Pneumatophores small or inconspicuous; 
seedling borne on tree and sharply angled; 
fis. small (less than 1 cm.); bark with 
very large amount of red coloring matter. 
Certops. 
g. Bark tight; petals with 3—4 clavate 
projections at apex. 
Ceriops tagal. 
gg. Bark looser; petals lacerate at apex. 
Ceriops Roxburghiana. 
Pneumatophores distinct or large; bark 
thick, rough, very dense, middle bark 
brownish red; fis. large (more than 3 cm.); 
seedling not borne on tree. 
Sonneratia. 
g. Pneumatophores very large, in outer 
part of swamp; lvs. thick and broad; 
fis. without petals. 
Sonneratia Pagatpat. 
& 
i) 
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