228 
THE SEAWEEDS 
Hypoglossum microdontum J. Agardh. 
Folioles imbricated over midrib, margins of rachis and folioles minutely 
toothed. 
South Australia (Encounter Bay). 
Hypoglossum revolutum (Harv.) J. Agardh. 
Frond dichotomous, formed of a string of strongly ribbed epiphyllous 
leaflets, revolute apices. Leaflets ovate-lanceolate, serrate, wavy, delicately 
membranous, pale-red, once and a half to twice as long as their breadth. 
10 cm. to 14 cm. high, about 4 mm. wide. Colour a pale rose-red, soon dis- 
charged in fresh water. At present known from South-Western Australia. 
' c 
Fig. 91 .-—Hypoglossum revolutum: a, plant; b y 
some of the epiphyllous leaflets, form- 
ing the extremities of the frond; c, 
apex of a leaflet. (After Harvey.) 
