Ser. RHopOsPERME2. Fam. Spongiocarpee. 
Priate LXIII. 
CHONDRUS CRISPUS, Zpnyi. 
Gen. Cuar. Frond cartilaginous, nerveless, compressed or flat, flabelliform, 
dichotomously cleft; formed internally of three strata; the inner, of 
densely packed, longitudinal fibres; the medial, of small, roundish 
cells ; the outer, of vertical, coloured, moniliform filaments. Fructzfi- 
cation; 1, prominent tubercles (nemathecia) composed of radiating 
filaments, whose lower articulations are at length dissolved imto 
spores (?); 2, tetraspores collected into sori, immersed in the substance 
of the frond. CHonprus (Stack.)—from xévdpos, cartilage. 
CHonprvs crispus; frond stipitate, thickish, cartilaginous, flat or curled, 
segments wedge-shaped, very variable in breadth; apices truncate, 
subemarginate or cloven; axils obtuse; sori elliptical or oblong, con- 
cave on one side. 
CuHonprvs crispus, Lyngb. Hyd. Dan. p.15. t.5. A.B. Grev. Alg. Brit. 
p. 129. t.15. Hook. Br. Fl. vol.ii. p. 302. Harv. in Mack. Fl. Hib. 
part 3. p. 201. Wyatt, Alg. Danm. no. 118 and 119. Endl. 3rd Suppl. 
p-39. Harv. Man. p.77. Kitz. Phyc. Gen. p. 398. t. 73. ii. 
Cuonprvs polymorphus, Lame. Ess. p. 39. 
CuHonpDRUs incurvatus, Kiitz. Phyc. Gen. p. 399. t. 73. ii. 
CHONDRUs celticus, Kitz. 1. c. 
SPH#RococcUws crispus, 4g. Sp. Alg. vol.i. p. 256. Syst. p. 219. Grev. 
Fl. Edin. p. 294. Spreng. Syst. Veg. vol. iv. p. 335. 
Fucus crispus, Linn. Mant. p. 134. Syst. Nat. vol. ii. p. 718. With. vol. iv. 
p- 106. Stack. Ner. Brit. p.63.+.12. Turn. Syst. vol. ii. p. 226. Hist. 
t. 216,217. Clem. Ess. p.313. Wahl. Fl. Lapp. p.497. E. Bot. t. 2285. 
Fucus ceranoides, Gm. Hist. Fuc. p. 115. t. 7. f. 1. (Evel. syn. Linn.). Huds. 
Fl. Ang. p. 582. Lightf. Fl. Scot. p. 913. Roth, Fl. Germ. vol. iti. p. 450. 
Esper, Ic. Fuc. vol. i. p. 143. t. 98. f.1, 2, 3. 
Fucus membranifolius, With. vol. iv. p.106 (not of Gooden. and Woodw.). 
Fucus polymorphus, Lame. Diss. p. 1. (excluding the fourth series). 
Fucus stellatus, Stack. Ner. Brit. p. 53. t. 12. 
Fucvs lacerus, Stack. 7. c. p. 50. t. 11. 
Fucus crispatus, FZ. Dan. t. 826. 
Fucus filiformis. Huds. Fl. Ang. p. 585. 
Fucus patens, Gooden. and Woodw. in Linn. Trans. vol. ti. p. 173. 
Has. On rocky sea shores, extending from three quarters tide level to low 
water mark, and beyond it. Perennial. Spring and Summer. Very 
abundant on the shores of the British Islands. 
Gzoer. Distr. Shores of Europe from North Cape to Gibraltar. Not found in 
the Mediterranean? Eastern shores of North America. 
R 
