Ser. RHopOsPERMEX. Fam. Delesseriec. 
Pirate CCLXVII. 
NITOPHYLLUM LACERATUM, Grev. 
Grn. Cuan. Frond membranaceous, reticulated, rose-red (rarely purplish), 
irregularly cleft, veinless, or furnished with irregular veins towards 
the base. Fructification two-fold, on distinct plants; 1, convex 
tubercles (coccidia) immersed in the frond, and containing a mass of 
spores; 2, ¢etraspores grouped into definite sori, or spots variously 
scattered over the frond. Niroprytium (Grev.), corruptly formed 
from xitor, brilliancy, and édXov, a leaf. 
Nrropnyiium /aceratum ; frond sessile or shortly stipitate, much branched 
dichotomously, traversed by numerous branching and anastomosing 
nerves; segments linear, variously cleft and lobed, waved at the 
margin, obtuse ; spots of tetraspores oblong, either marginal or borne 
on distinct, leafy processes of the margin. 
NiroPHyLuvm laceratum, Grev. Aly. Brit. p. 83. Hook. Brit. Fl. vol. ii. p. 288. 
Wyatt, Alg. Danm. No. 107. Harv. in Mack. Fl. Hib. part 3. Harv. Man. 
Ed, 1.p. 59. 
CrypTopLeurA lacerata, Kiitz, Phyc. Gen. t. 68. vol. iii. p. 444. Sp, Aly. 
p- 870. 
AGLALOPHYLLUM laceratum, Mont. Fl. Canar.p.150. Endl. 3rd Suppl. p. 52. 
De esseErta lacerata, 4g. Sp. Alg. vol. i. p. 184. Ag. Syst. p. 251. Grev. Fl, 
Edin. p. 293. 
WorMSKIOLDIA lacera, Spreng. Syst. Veg. vol. iv. p. 332. 
Cuonpevs laceratus, Lyngb. Hyd. Dan, p. 18. 
Fucus laceratus, Gmel. Hist. p. 179. t. 21. f.4. Good and Woodw. Linn. 
Trans. vol. iii. p. 155. Stack. Ner. Brit. p. 17.t.18. Turn. Syn. p. 154. Turn. 
Hist, t. 68. £. Bot. t. 1067. 
Fucus crispatus, Huds. Fl. Alg.p.58. Linn. Syst. Nat. p. 1718. Esper, Ic. Fue. 
vol. i. p. 130. t. 90. 
Fucus endiviefolius, Lightf. Fl. Scot. p. 948. t. 32. 
Has. On rocks and on the stems of Laminaria digitata, near low-water 
mark and at a greater depth. Annual. Summer. Common on the 
shores of the British Islands. 
Geogr. Distr. Atlantic Coasts of Europe and North America. ' 
Descr. Root a small disc, often throwing out creeping fibres. Fronds sessile, or 
with avery short, cartilaginous stem, much divided, four to six or eight 
inches in length, and as much in expansion, the laciniz varying in breadth 
from a quarter of an inch to upwards of an inch. The division of the frond 
is usually dichotomous, with many irregularities; the laciniw are linear, 
or somewhat cuneiform, lobed and dentate, and often curled at the margin, 
very obtuse, simple or repeatedly forked. The lower part of the membrane 
is always traversed by slender, branching and anastomosing, tolerably 
distinct veins, which in some specimens extend and ramify through the upper 
VOL. III. H 
