Ser. RuoposPermrx. Fam. Spongiocarpee. 
Puate CXXXI. 
PHYLLOPHORA RUBENS, Grev. 
Gen. Cuan. Frond stipitate, rigid-membranaceous, proliferous, nerveless, or 
with a vanishing nerve, cellular; cells minute, angular, gradually 
smaller towards the surface. Fructification; 1, tubercles (favellidia) 
scattered over the frond, containing masses of minute spores ; 2, 
warts (nemathecia) seated on the frond, composed of radiating, moni- 
liform filaments, whose lower articulations are at length converted into 
spores? 3, ¢etraspores (on distinct plants) collected into sori, either 
towards’ the apex of the frond or in proper leaflets. PHytzopHora 
(Grev.),—from vor, a leaf, and dopéw, to Lear. 
PuyYLuopHora rvbens; stem very short, expanding into a sub-linear or 
cuneate, simple or forked, rigidly membranaceous, obscurely mid- 
ribbed frond, which is repeatedly proliferous from the surface ; tuber- 
cles scattered, wrinkled or crested with sinuous folds; warts concealed 
under leafy processes. 
PHYLLOPHORA rubens, Grev. dig. Brit. p.135.t.15. Hook. Br. Fl. vol. ii. 
p- 303. Wyatt, Alg. Danm. no. 29. Harv. in Mack. Fl. Hib. part 3, p. 202. 
Harv. Man. p. 79. Endl. 3rd Suppl. p. 38. Kiitz. Phyc. Gen. p.412. 
SpH#Rococcus rubens, 4. Sp. Aly. vol. i. p. 237. Ag. Syst. p. 213. Hook. 
' Fl. Scot. part 2. p. 102. Grev. Fl. Edin. p. 296. Spreng. Syst. Veg. 
vol. iv. p 335. 
CHonprws rubens, Lyngd. Hyd. Dan. p. 18. 
DeELEsseERIA rubens, Lamour. Ess. p. 38. 
Fucus rubens, Linn. Sp. Pl. p. 1630. Good. and Woodw. in Linn. Trans. 
vol. i. p. 165. Zurn. Syn. vol. ii. p.216. Turn. Hist. t.12. #. Bot. 
t.1053. Stack. Ner. Brit. ed. 2. t.19. Hook. Iceland Tour, vol. ii. 
p. 347. 
Fucus prolifer, Lightf. Fl. Scot. p. 949. t.30. Esper, Ic. Fuc. t. 129. 
Fucus epiphyllus, £7. Dan. t. 708. 
Fucus crispus, Huds. Fl. Ang. p. 580. 
Has. On the shelving, rocky sides of deep tide pools near low-water mark, 
under the shadow of Laminarig; also on rocks, stones and nulli- 
pores, beyond tide marks, from four to fifteen fathoms. Perenmial. 
Winter. Frequent on the British coasts, from Orkney to Cornwall. 
Geoer. Distr. Atlantic coasts of Europe from Iceland to Spain. Baltic Sea. 
Descr. Root an expanded callus. Fronds densely tufted, from three to eight or 
ten inches in length, rising with a short cylindrical stem, which gradually 
passes into the flattened, obscurely mid-ribbed, attenuated base of a linear- 
wedge-shaped lamina ; this primary lamina is sometimes quite simple, but 
is more frequently forked, and often many times dichotomous, each segment 
VOL. II. D 
