BIOLOGY OF SEAWEEDS OF ECONOMIC IMPORTANCE
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TABLE I. THE TYPE OF EXTRACTIVE OBTAINED FROM VARIOUS GENERA OF
RED ALGAE. (Data from Stoloff, 1962)
Order
Genus
Type of Extractive
Agar Carrageenan Gelan
Gelidiales* .
Gelidium
(18 species)
Pterocladia
(3 species)
Suhria
(1 species)
Acanthopeltis
(1 species)
Gelidie 1 la
( 1 species)
Yatubella sp.
Endocladia
(1 species)
Gloiopeltis
(3 species)
Aeodes
(1 species)
Gacilaria
(8 species)
Corallopsis
(1 species)
Furcellaria
Cryptonemiales
.
Gigartinales .
(1 species)
(1 species)
(3 species)
(3 species)
Ahnfeltia
(1 species)
Phyllophora
(2 species)
Grymnogongrus
(2 species)
Chodrua
(2 species)
Gigartina
(1 3 species)
Iridophycus
(3 species)
Rhodoglossum
AgardhieUa
Eucheuma
HYpnea
The status of the order Gelidiales has been questioned (Dixon, 1961). and the
order has been incorporated in the Nemalionales (Parke and Dixon, 1964).
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