Ser. CHLOROSPERMES. Fam. Confervee. 
Puate LIV. A. 
CONFERVA TORTUOSA, Dit. 
Gen. Cuar. Fidaments green, jointed, unattached, forming stratified bundles, 
unbranched. wit aggregated granules or zoospores, contained in 
the joints, having at some period, a proper ciliary motion. Converva 
(Plin.)—from conferruminare, to consolidate; because some of the 
species were used by the ancients in cases of fractured bones. 
Converva tortuosa; filaments rigid, slender, much curled and twisted, 
forming broad closely interwoven strata; articulations twice or thrice 
as long as broad. 
ConFeRva tortuosa, Dillw. Conf. t.46. E. Bot. t. 2220. Lyngb. Hyd. Dan. 
p- 145. t.49. Grev. Fl. Edin. p. 315. Ag. Syst. p. 98. Harv. in Hook. 
Br, Fl. vol. ii. p. 352. - Harv. in Mack. Fl. Hib. part 3. p. 225. Hare. 
Man. p. 129. (excl. var. B.) J. Ag. Alg. Medit. p. 12. 
Haz. On submarine rocks, at half-tide level ; also in salt pools by the edge 
of the sea. Salt pools by the Yare, and on marine rocks at Sw yansea, 
Mr. Dillwyn. Frith of Forth, Messrs. Arnott and Greville. Miltown 
Malbay, and Skerries, V. H. H. Not uncommon. 
GuoGR. DIstR. Shores of Europe. Feeroe Islands. Mediterranean Sea. 
Descr. Filaments forming crisped strata from a few inches to several feet in 
diameter, which closely adhere to the inequalities of the rock, or to the 
plants that grow on it. The mass is of a brilliant green, and glossy. The 
joints are somewhat variable in length, and generally contain a mass of dense 
endochrome, which is well preserved in drying, and recovers its form on 
being moistened. 
The plant published in Wyatt’s ‘Algae Danmoniensis’ under this 
name belongs, if I mistake not, rather to C. riparia, Roth, to 
which also, perhaps, the C. perreptans of Carmichael ought to be 
referred. 
A. Fig. 1. Conrerva TorTUosA :—watural size. 2. Some of the filaments 
magnified. 
Prats LIV. B. 
CONFERVA IMPLEXA, Dite. 
Conrerva implexa ; filaments very slender, rather flaccid, forming extensive, 
much entangled, bright-green strata ; articulations about as long as, 
or longer than, broad. 
ConFreRvA implexa, Dillw. Suppl. t. B. EH. Bot. t. 2309. Lyngb. p. 144, 
t.49. dg. Syst. p.91. Harv. in Hook. Br. Fl. vol. ii. p. 352. Harv. in 
Mack. Fl. Hib, part 3. p. 226. Harv. Man, p. 129. Wyatt, Alg. Danm. 
no. 142. 
ConFerRva ulothrix, Lyng ? Hyd. p. 146. +.50. Harv! 1c. p.358. Hare! 
Man. p. 129. 
