Ser. Rhodospermkk. Fam. Dictgotea. 



Plate LXX. 



STILOPHORA RHIZODES, J. Ay. 



Gen. Char. Root a small, naked disc. Frond filiform, solid or tubular, 

 branched. Fructification, convex, wart-like sori scattered over the 

 surface, composed of obovate spores nestling among moniliform, ver- 

 tical filaments. Stilophora (J. Ag.), — from o-rtX^, a point or dot, 

 and (popeoiy to hear ; in allusion to the dot-like fructification. 



Stilophoha rJiizodes ; frond subsolid, much and irregularly branched, the 

 branches subdichotomous, attenuated ; ramuli scattered, forked ; fruc- 

 tification densely covering the whole plant. 

 Stilophoha rhizodes, </". Ag. Linn, vol xv. p. 6. Endl. 3rd Suppl. p. 26. 

 Stermatochnus rhizodes, Kiltz. Phyc. Gen. p. 335. 



Sporochxus rhizodes, Ag. Sp. Alg. vol. i. p. 156. Ag. Sgst. p. 260. Spr. 

 Syst. Veg. vol. iv. 329. Grev. Alg. Brit. p. 43. t. 6. Hook. Br. II. vol. ii. 

 p. 275. Harv. in Mack. Ft. Hib. part 3. p. 173. Wyatt, Alg. Barm. no. 5. 

 Harv. Man. p. 27 (excl. var. £.). 



Chordaria rhizodes, Ag. Syn. p. 15. Lyngb. Ilyd. Ban. p. 52. t. 13. 



Fucus rhizodes, Turn. Hist, t 235. 



Conferva rhizodes, Ehr. in Herb. 



Conferva gracilis, Wulf. Crypt. Aqnat. no. 23. 



Conferva verrucosa, E.Bot. t. 1688. 



Ceramium tuberculosum, Roth, Cat. Bot. vol. ii. p. 162. vol. 112. 

 Hab. Near low water mark, growing either on rocks, or parasitically on 

 other Algas. Annual. Summer. Southern shores of England, frequent. 

 Common on the eastern, southern, and western shores of Ireland. 

 Belfast Bay, and Strangford Lough, Mr. W. Thompson. Jersey, Miss 

 White and Miss Turner. 

 Geogr. Distr. Atlantic shores of Europe. Baltic Sea. 



Descr. Root, minute, scutate. Fronds solitary, or tufted, from six inches to two 

 feet, or more, in length, cylindrical, filiform, much and irregularly branched, 

 sometimes pretty regularly dichotomous, sometimes with a leading stem benl 

 in a nexuous or zigzag manner, and furnished with closely set, alternate 

 branches, which are more or less regularly dichotomous. In some specimens 

 several of the branches arc secund, and plentifully beset with short, simple, 

 or forked ramuli; in others the branches are bare and but little divided. In 

 all varieties the axils are obtuse, and the apices taper to a more or less line 

 point. The fructification is very densely dispersed overthe whole frond, giving 

 the branches a warted or knotted aspect. The warts are either hemispherical 

 or oval, and consist of radiating, beaded, clavate, simple filaments, among 

 which obovate spores, with wide bonier-, and narrow, tapering bases are 

 found fixed to the surface of the frond. In a young state the frond 18 quite 

 solid, composed of roundish or subhexagonal cells, the outermost of which 



