ri>y]>TO(,AMlA-AI/, ft 



On t.h" -t.'-ms of f.firriinfirid il'iifilnln. not uncommon. 

 A span high, purplish-brown, [Jack when dried* 



2. It. wJifu-.r.fi. frond cylindrical, very much branched, the 

 branch'---. alb-mat/-, <-n-<t.o -patent, subulate at the points; branch. 



14 ,-,ubulate, clustered GREV. Alg. Brit. 103. 

 -//A///.C//.V, A' A///. /A//, t. 1 If; 4. Siilu&rococcu* tubfuscut, HOOK. 

 ii. 101. (,,y./ ///'/ :,ui,j,i :.<, GREY. F/. Witt. 289. 



On rod:,. )jot. uncommon. A span or more in length, 



h. red. 



no. A* 



J. A. ArbiucuJii) frond deep red, bu<-hy, the stem naked at the 

 vrcurnnt.. not jointed ; branches compound, tufted, some- 

 what whorled, the ultimate branchlets alternate; articulations 

 about as Jong as broad. . - .( , JM. v. /'/. />//.. .'iOJ. llutr.ldntAa, arbux- 

 rutft, HOOK. Si:nt. ii. W.t. Corijt'/rra arhn.^.uin. I)n.i,w. Cvnf. p. 0. 

 t. \' t ~>. and (;. A'////, //o/. t. If) Jo', o/^. 



//^//y. On rocks, in tufts somewhat more than an inch high, 



141. POLYSIIMIOXIA. 



J. I*. faxl.i.tiwln, tufted, very much branched ; branches dichoto- 



the ultimiit'- mei very short; articulations 



.horter than their diameter, with a dark spot in the centre; cap- 



I. ovate, sessile CJiniv. / /. /-.v/m. \W\. Conferva 



jnilyriior/t/i.(t, Lie-in r. Srnt. MM. U'JTM. iv. 104. DII.I.W. Co/if. 



p. 81. t. 44. //nf.r/ii,,.:-.iufi/.\tiyifita, JIOOK. Scot. ii. 87- 



Unit. On J''uci, jjarticularly on /'. rtndomu, very common. 



(Jrows in flense dark reddish-brown bushy tufts from 1 to 2 

 inches high, with a round rl top, rigid, so that when re- 

 moved from the water it does not collapse. The ultimate 

 branches are short, alternate, and very patent. The dark 

 spot in the centre of the articulations is randy to be dis- 

 tinguished except in the extreme- branches, where in ge- 

 neral it is very obvious, although 1 have examined speci- 

 mens where there was no trace of it. Scarcely adheres to 

 paper. 



