Ser. GONGYLOSPERME.E. (35) Fam. CRYPTONEMIACEvTi. 



Plate LXXIX. 

 PHYLLOPHOEA MEMBEANIFOLIA.— /. Ag. 



Gen. Char. — Frond flat, rigid, nerveless, uniformly cellular ; cells minute, roundish 

 angul.ar. Fructification: "1. Tubercles (favellidia), scattered over the surface 

 of the frond, and containing a mass of minute, roundish or angular spores ; 



2. Warts (nemathecia), seated on the frond, and composed of radiating monili- 

 form filaments, whose lower articulations are at length convei'ted into spores ? 



3. Tetraspores, on distinct plants, collected into sori, either towards the apex 

 of the frond, or in proper leaflets." — Harvey. Name from <pvKKuv, "a leaf," 

 and (popica, "to bear." 



Phyllophora memhranifolia. — Stem elongated, filiform, cylindrical 

 and branched ; branches simple o.r once or twice divided, the terminal 

 expanding into flat, broadly obcuneate or flabelliform segments, simple or 

 once or twice dichotomously divided; tubercles ovate, on short stalks, 

 arising from the sides of the stem and segments ; nemathecia forming 

 somewhat triangular patches in the middle of the segments. 



PHyLLOPHOEA memhranifoUa. — /. Ag. Alg. Medit. p. 93 ; Endl.ZrA Suppl. p. 38 ; 

 Earv. P. B. plate 163 ; Harv. Man. p. 143 ; Harv. Syn. p. 117 ; 

 Atlas, plate 1, fig. 4 ; Harv. N. B. A. part 2, p. 165. 



Rhodtmenia mernbranifolia. — Harv. in Pliyc. Br. Syst. List, p. 12. 



Chondrtjs membranifolim. — Grev. Alg. Brit, p. 131 ; Hook. Br. Fl. vol. ii. 

 p. 302 ; Harv. in Made. Fl. Hih. part 3, p. 202 ; Wyatt, Alg. Damn. 

 No. 76 ; Harv. Man. 1st edit. p. 78. 



Sph^kococcds memhranif alius. — Ag. Syn. p. 26 ; Lyngh. Hyd. Dan. p. 10, t. 3 ; 

 Ag. Sp. Alg. vol. i. p. 240 ; Ag. Syst. p. 214 ; Hooh Fl. Scot, part 2, 

 p. 102 ; Grev. Fl. Edin. p. 295 ; Spreng. Syst. Veg. vol. iv. p. 335. 



Fucus memhranif olius. — Good, cfr Woodw. in Linn. Trans, vol. iii. p. 120, t. 16, 

 f. 1 ; Lam. Diss. t. 20, 21, f. 3 ; Turn. Syn. p. 25 ; Turn. Hist. 

 t. 74 ; Sni. E. Bot. t. 1965 ; StacTc. Ner. Brit. t. 20. 



¥vGVS Jimbriatus. — Huds. Fl. Angl. p. 574. 



Hab. — On rocks, stones, old shells, &c., between tide-marks. Perennial. Winter. 

 Common. 



Geogr. Dist. — Atlantic shores of Eui-ope and North America. 



Description. — Root, a broad, thick, tubercular disc. Fronds tufted, 

 many from the same root. Stems elongated, three to ten inches in 

 lengih, and nearly half a line in thickness, branched from near the base; 

 branches simple or once or twice irregidarly divided, all the divisions 

 filifonn, cylinth'ical, expanding upwards into a thin, flat leaflet, broadly 

 wedge-shaped or subflabeUiform, simply or once or twice dichotomously 



