Ser. RuoposPerME®. Fam. Spherococcoidea. 
Prats CCXVII. 
RHODYMENIA? PALMATA, Grev. 
Gen. Car. Frond flat, membranaceous, or subcoriaceous, ribless, veinless, 
cellular; central cells of small size; those of the surface minute. 
Fructification of two kinds, on distinct individuals ; 1, convex ¢uder- 
cles (coccidia), having a thick, cellular pericarp, and containing a 
mass of minute spores, on a central placenta; 2, ¢e¢raspores, either 
zoned or tripartite, imbedded among the cells of the surface, scattered 
or forming cloudy patches. Ruopymenta (Grev.),—from podeos, red, 
and tyny, a membrane. 
RuopyMentiA palmata; frond coriaceous or submembranaceous, purple, 
broadly wedge-shaped, irregularly cleft, palmate, or dichotomous, 
sometimes repeatedly laciniate; the margin flat and even, sometimes 
winged with leaflets; granules distributed over the whole frond in 
cloud-hke spots. 
RuopyMeEnta palmata, Grev. dig. Brit. p. 93. Hook. Br. Fl. vol. ii. p. 291. 
Wyatt, Alg. Danm. no. 110. Harv. in Mack. Fl. Hib. part 3. p. 195. 
Harv. Man. p. 63. 
SpH#£Rococcus palmatus, Kitz. Phyc. Gen. p. 409. t. 63. f. 1. 
HaALyMENIA palmata, 4g. Syn. p.55. Ag. Sp. Alg. vol.i. p. 204. Ag. 
Syst. p. 242. Spreng. Syst. Veg. vol. iv. p. 333. Hook. Fl. Scot. part 2. 
p- 107. Post. and Rupp. p. 18. ; 
DELESSERIA palmata, Lamour. Ess. p. 37. 
Uxva palmata, Dec. Fl. Fr. vol.ii. p.12. With. vol. iv. p. 123. Lyngd. Hyd. 
Dan. p. 24. Grev. Fl. Edin. p. 298. 
Fucus palmatus, Linn. Sp. Pl. p. 1630. Huds. Fl. Ang. p.579.  Lighlf. 
Fl. Scot. p. 933. t.27. Good. and Woodw. Linn. Trans. vol. iii. p. 163. 
Gunn. Fl. Norv. vol.ii. p. 69. Turn. Syn. p. 175. Turn. Hist. t. 115. 
E, Bot. t.1306. Hook. in Fl. Lond. New Series, with a figure. 
Fucus ovinus, Gunn. Fl. Norv. vol.i. p. 96. Mohr. Hist. Isl. p. 245. 
Fucus caprinus, F7. Dan. t.1128. Esper. Ic. p. 146. t. 74. 
Fucus bullatus, 77. Dan. t. 770. 
Fucus rubens, sper. Ic. t. 15. 
Fucus dulcis, Gmel. Hist. p. 189. t. 26. (fide Turner.) 
Var. p. marginifera; frond oblong, subsimple, proliferous at the margin. 
(Tab. Nost. CCXVILI.) 
Fucus palmatus, Stack. Ner. Brit. p. 54. t. 12. 
Utva caprina, Gunn. Fl. Norv. vol. ii. p. 126. t. 6. f. 4. 
Var. y- simplex; frond undivided, wedge-shaped. 
HALYMENIA palmata 6, simplex, 4. Syn. p. 36. 
Var. 8. Sarniensis ; frond laciniated, the segments narrow and sublinear. 
Fucus Sarniensis, Mert. i Roth. Cat. Bot. vol. ii. p. 103. t.1. Turn. Hist. 
Fuc. t. 44. 
