CRYPTOGAMIA . ALG^E. 241 



ly with the magnified figure of Conferva thuioides in Eng. 

 Botany, but the articulation of the stem in the latter is 

 longer, and the habit of the plants is different. When 

 parasitical on Polysiphonia fucoides, as it often is, C. purpu- 

 rascens is less bushy, and of a fine pink colour, with pellu- 

 cid joints. In general, at least, it does not colour fresh 

 water on a short immersion, but often slightly stains the 

 paper on which it is dried. After having been dried and 

 again moistened, it exhales the odour of sweet violets, 



2. C. Turnery rose-coloured, crowded ; filaments erect, pinnate 

 or somewhat bipinnate ; branches opposite, patent, almost simple ; 

 joints many times longer than broad ; capsules pedicellate, unila- 

 teral AGARDH, Sp. Alg. ii. 160. fide GREVILLE in lift. Ceramium 

 Turneri, GREV. Crypt. Fl. t. 355. Conferva Turneri, DILLW. 

 Conf. p. 79, t. 100. Eng. Bot. t. 2339. 



Hob. Berwick Bay, parasitical on Furcellaria lumbricalis, 

 in tufts about fths of an inch in height. 



A rare and beautiful species, discovered, in the first instance, 

 by DAWSON TURNER, Esq., one of the most distinguished 

 of British botanists. I considered myself fortunate in 

 finding it, in 1828, on our shore north of the Tweed, so 

 that it may very properly be considered as an addition to 

 the Scottish Flora. 



:?. C. repens, red, short, creeping; filaments capillary, branched ; 

 branches erect, alternate, patent ; joints about thrice their dia- 

 meter, alternately contracted when dry; partitions pellucid. 



LYNGB. Hydroph. Dan. 128. t. 40. Conferva repens, DILLW. Conf. 

 72, t. 18. Eng. Bot. t. 1608. 



Hob. Parasitical on Furcellaria lumbricalis and Chondrus 

 crispus, covering the stems with a red rough velvety 

 coating, not common. 



This is also new to the Scottish Flora, but the acquisition 

 has little beauty to recommend it. 



4. C. Rothii, crimson, velvet-like, matted; filaments erect, 

 slender, branched; branches erect, alternate, elongate, rather 



distant ; articulations twice as long as broad, joints pellucid. 



LYNGB. Hydroph. Dan. 129. t. 41. GREV. Fl. Edin. 312. Con- 

 ferva Rothii, DILLW. Conf. p. 73, t. 73. Eng. Bot. t. 1702. Ce- 

 ramium Rothii, HOOK. Scot, ii, 85. 



VOL. II. L. 



