XXXIV 
THE amateur’s SYNOPSIS. 
GREEN SEA - WEEDS. ( CJilorosperms.) 
FLAT; MEMBRANACEOUS. 
ribless. 
Purple. 
Round or ribbon-like ; broad or narrow expansions 
Grass greeM. 
,, ,, tke membrane formed of two layers 
of cells ......... 
Puckered and bag-like when young, afterwards bursting; 
membrane formed of one layer of cells 
Narrow stems and branches ; blunt at top ; tapering greatly 
to the base ........ 
Genus. Fam. 
PORPHYRA XXI 
Phycoseris XXI 
Ulva XXI 
Enteromorpha XXI 
CYLINDRICAL (thread-shaped), 
- — unjointed. 
Solid. 
Dark green ; spongy ; the thickness of a goose-quill ; many 
times forked ........ Codium 
XX 
Tubular; unhranched. 
Bag-like ; inflated ; of every width from a hog’s bristle to 
three inches . . ...... 
Enteromorpha XXI 
Tubular; thread-like; branched. 
Threads in free tufts ; or matted below ; zoospores external . 
,, long ; undivided stems ; profusely branched ; tips 
pointed throughout ....... 
Stems beautifully plumed like feathers ; sometimes replumed 
Rose-red ; minute ; parasitic ; fringing ; branching forked 
Green „ „ „ „ 
„ cushion-like tufts, formed of threads collected 
into branching bundles ...... 
Tubular ; filled with colour-cells ; unbranched. 
Long, dark-purple tufts ; lying in glutinous layers on rocks 
Rose-red ; minute ; parasitic ; fringing .... 
Green ; „ „ in tufts, or forming close 
velvet-layers on rocks ...... 
Green ; bright or dull ; forming fleecy layers on floating plants 
,, „ threads simple ; needle-like ; massed 
into gelatinous layers ...... 
,, „ threads simple ; in bundles enclosed 
in snake-like sheaths ...... 
Dull-green ; tlireads in free tufts, or layers ; matted below 
Vaucheria XX 
Enteromorpha XXI 
Bryopsis XX 
Bangia XXI 
Hormospora XXV' 
SCHIZOTHRIX XXIII 
Bangia XXI 
Bangia XXI 
Calothrix XXIII 
Spermosira XXIV 
Oscillatoria XXIII 
Microcoleus XXIII 
Lyngbya XXIII 
