G3 



Sub-Class II. RHODOSPERME^l. 



OSDBB 7. UHODOMELAi E.E. 



XXXVI. ODONTHALIA. 



98. dentata [The toothed Odonthalid) \ frond Irregularly pin- 

 nate; branches linear-oblong, deeply pinna tifid; Laeinise al- 

 ternate, sharply toothed towards their truncate extremities ; 

 capsules and pods clustered, axillary or marginal, Lyngh. 

 Hyd. Bern. p. 9. t. 3. (Atlas, PL XXIII. Pig. ! 



Rhodomela dentata, Ag. Delesseria dentata, Lamour. Fucus 

 dentatus, Linn. P. atomarius, Gmelin. F. pinnatifidus, 

 Fl. Dan. 

 Hah. On rocks in the sea. Perennial. Fruiting in the winter. 

 Abundant. 

 Odonthalia dentata, which i> peculiarly a northern plant, 

 varies very little in the frond, excepl thai some specimens 

 are more luxuriant than others. The mode of branching, 

 and alternate pinnati- section is invariable ; but the fructi- 

 fication presents sonic varieties. In some specimens the 

 Btichidia are densely clustered, and. as well as the bunches 

 of capsules, confined to the axils of the segments; in others, 

 both kinds of fruit are scattered along the margin. 



XXXVII. RHODOMELA. 



99. lycopodioides | The Lycopodium Bhodomela); frond divided 



near the base into several Long, simple branches, which are 

 densely besel with Blender, finely-divided branchlets, mixed 

 with the Bhort, rigid, bristle-like remains of a former series, 

 Ag.Sp. dig. v. 1. p. 377. (Atlas, PL .Will. Fig. 100.) 



ina lycopodioides, Lyngb. Furcellaria lycopodioid 

 Lophura Lycopodioides, KiUz. Fucus Lycopodioides, / 

 Conferva squarrosa, Fl. Dan. 



Hah. Growing on the stems of Latninaria digitata. Perennial. 

 Spring and Bummer. 

 The summer and r inter conditions of this Bpecies are quite 



unlike each other. Summer plants of the Becond year have 



the >t cms clothed with the remains of old ranmii. besides 



being leathered with young ones, [nsome magnificei 

 eied h\ Mr. Thompson on theDownshir* 



