THE amateur’s SYNOPSIS. xxix 
Membranaceous or Gelatinous. 
Long, loose-feeling, slimy ; brandling irregular ; very thick and Genus. Fam. 
clumsy, or very slender ....... Mesogloia V 
Bag-like, of every width from a hog’s bristle to six inches ; 
speckled with dots ; tips blunt ..... Asperococcus IV 
Stem undivided ; branches simple ; bearing green-crested seed- 
pods .......... Sporochnus II 
Stem undivided, or slightly forked ; branches long ; simple ; 
clothed with fine colourless fibres ..... Chordaria V 
Stem and branches tapering to each end ; opposite ; marked by 
rings (whorls) of dots ....... Striaria IV 
Irregularly divided or branched ; speckled with fruit-warts . Stilophora IV 
Stems profusely and repeatedly rebranched ; branches alternate . Dictyosiphon IV 
,, ,, ,, . branches opposite . Desmarestia II 
Very short tufts ; threads unbranched ; clothed with colourless 
fibres . Wyattia IV 
clothed with Jointed Branchletee 72 <?. 
Soft ; branches distant ; mostly opposite ; branchletee?2s bright 
green, hair-like ; set in rings (whorls) . . . . 
Eigid ; dull olive or brown ; branchleteews short, curved ; in 
rings (whorls) ........ 
- — contracted at intervals. 
Stems unbranched ; contractions inflated ; of irregular lengths . 
Large, bag-like ; contractions inflated ; of irregular lengths ; 
speckled with dots ........ 
jointed. 
Branches delicately plumed like feathers ; main stems opaque . 
„ ,, ,, jointed throughout . 
Undivided stems clothed with branchlets tipped by colourless 
fibres .......... 
Slender, thread-like tufts ; profusely and variously branched 
,, very short tufts ; threads unbranched ; parasitic 
INCRUSTATIONS or PATCHES. 
dark brown. 
Leathery, skin-like, closely adhering, often rough with fruit- warts 
Fleshy, convex, smooth . . . . 
Minute, parasitic, forming thin stains or convex dots 
Arthrocladia II 
Cladostephus VI 
Chorda V 
Asperococcus IV 
Chcetopteris VI 
Sphacelaria VI 
Myriotrichia VI 
Ectocarpus VI 
Elachista V 
Ealfsia 
V 
Leathesia 
V 
Myrionema 
V 
IRREGULAR or DEFINED LUMPS. 
Fleshy, irregularly round, in potatoe-like clusters, or rarely 
minute ; parasitic ........ Leathesia V 
Tough, leathery, fungus-like, sending up long, strap-like, slimy, 
fruit-receptacles ........ Himanthalia I 
