MARINE ALGH OF CAPE OF GOOD HOPE. 205 
as de — spherosporis inter ramellos corymbosos plurimis 
subaxi 
Hab. Ad. ge A Spei. In speciminibus Gigartine Radule 
J. Ag. a W. Tyson 
ra er named this species after Mr, W. Tyson, of Cape Town, 
who has sent me many interesting specimens of alge from the 
Cape of Good Hope. 
THysaNocLaDIA cortAcEA Harv. Natal, Ruperti! 
Geogr. Distr. Western Australia. 
attention to the land flora, and until the early part of this century 
there are not many records of alge from this region. The earliest 
specimens of Macrocystis Bi et . Ag. described by Petiver as 
‘«‘ Alga verrucosa capensis,’ of an Tri idea, and of an alga which is 
probably Pachymenia carnosa 
After these pre-Linnean collectors we have Drege, Krauss, 
Gueinzius, Ecklon, Zeyher and others, whose herbaria have un- 
fortunately been broken up and distributed, thus adding much to 
the difficulty of determining the presence or absence of certain 
species at the Cape. 
Tn later times we have collections made by Harvey, Senet 
a large proportion of the total number of species recorded from the 
Cape; and by Pappe, on whose specimens Kitzing fo Blinded many 
of his Cape species. large collection of alge was made in 
1889-90 by Mr. Leonard Boodle, and presented to the British 
Osea and others; there are also unnamed specimens of Cheto- 
morpha and Cladophora, but I prefer to leave the determination of 
these species to some expert in these difficult genera. At the 
present time the British Museum is receiving occasional supplies 
of material forwarded by Mr. Tyson, of Cape Town, collected by 
himself an her workers at different Hey along the coast. 
This list is therefore intended to show what has been already 
done as an aid to present gear and does me aim at being an 
exhaustive eapre e of the m ora 
The first, and indeed up zs the present ‘time the only, list of 
exclusively Cape alge is the Phycee Capenses of Areschoug, 
