XXX 
THE amateur’s SYNOPSIS. 
RED SEA-WEEDS. (^Rhodosperms,^ 
FLAT. 
with a Midrib. 
Membranaceous. 
Thin, leaflike ; midribs throwing out leaflets 
„ „ „ blood-red ; fruiting in winter 
without a Midrib. 
Membranaceous ; thin. 
Small ; oval ; leaf-like ; with oval leaflets springing from the 
margins ......... 
Fan-shaped (rarely narrow); veins rising from the base 
„ no veins ; turning orange in fresh water . 
Wedge-shaped; of various widths ; purplish 
Oblong ; of various widths ; margins often fringed with 
frondlets ......... 
Narrowish ; repeatedly forked throughout ; margins some- 
times fringed ........ 
more or less forked ; tips obtuse ; fruit-like mid- 
rib-lines 
Narrow ; purplish; cut out into branches ; margins notched 
,, distantly forked ; divisions wedge-shaped 
„ rose-red ; last branchlets set on one side only, like 
the teeth of a comb ....... 
Very narrow ; repeatedly forked and branched upwards 
,, stems and branches tapering to each end 
Membranaceous; thick. 
Oval ; rising from a short stalk ..... 
Soft ; roundish ; margins throwing out fronds 
Crisp ; slit into broad, wedge-shaped divisions 
,, of various widths ; margins fringed with frondlets 
Rather rigid. 
Stalked ; wrinkled ; margins throwing out young fronds 
„ ,, several times forked ; expanding fan-wise 
,, roundish ; horizontally laid ; rooted by fibres from 
its under surface ....... 
Stalked ; branches regularly and repeatedly plumed and re- 
plumed with short branchlets and branchletee??5 
Genus. Fam. 
Delesseria XI 
WORMSKIOLDIA XVI 
Chylocladia XVIII 
Nitophyllum 
XI 
Nitophyllum 
XI 
Rhodymenia 
XVI 
Halymenia 
XVIII 
Rhodophyllis XVI 
Stenogramme 
XVI 
Odonthalia 
VII 
Gracilaria 
XI 
Plocamium 
XVI 
Euthora 
XVI 
Grateloupia XVIII 
ScHIZYMENIA 
XVIII 
Kallymenia 
XVIII 
Callophyllis XVIII 
Calliblepharis XI 
Ph YLLOPHORA XVIII 
Rhodymenia 
XVI 
Peyssonelia 
XIV 
Ptilota 
XIX 
