lb 



ACOTYLEDONS. ALG.i:. Tlutc/liusia. 8/ 



rather rigid, articulations twice as long as tliey are broad. 



^i^r, p, 68, Coiif'erua aurea, Dillw. t. S3. Byssus aurea, 



Ligh/f. p. \002. E.B.t. 2\2. 

 Hab. Rocks in the Highland mountains, frequent. Light/. Rare 



about Glasg. ; below a rock at Mug loch castle, IIopJc. Upon the 



bark of trees, about Edinb., where it grows much smaller, yet 



bearing capsules, Mr. Arnott. 

 In the Herbarium, the colour changes to dull brownish yellow. The 



capsules are figured by Dillwyn, both lateral and terminal, oval, 



16. HUTCHINSIA. 

 Fniit of two kinds : ovate reticulated capsules, and swollen 

 ■ branchlets containing globular seeds. Filaments formed of a 

 number of parallel tuies. — Filameyits more or less tufted, 

 purplish, gradu.ally attenuated, very much branched in asub- 

 fasciculated manner and jointed, frequently sv/elling at the 

 joints; articulations composed of a number of parallel tiibes, 

 which give them a striated, rarely a reticulated, appearance; at 

 the extremitv of the branches, particularly when young, often 

 having a small, pellucid tuft of hairs, Fnnt of two kinds: 

 ovate capsules, broader at the base, acuminated at the point, 

 sometimes truncated, sessile with a few pyriform seeds ; and 

 seeds or globular granules, longitudinally arranged and imbed- 

 ded in pod-shaped branchlets. 



1. H. Jasligiata, filaments dichotomous nearly equal fastigiatc, 

 articulations shorter than broad with a dark spot in their cen- 

 tre. Ag.p.53. Co7iferva polij7norpha, E.B.t. 17QL Dillw. 

 Conf.t. 44. Li g h ff. p. 9SQ. 



Hab. Upon the rocky shores and on the larger Fuel, abundant, 



A rigid, stout plant, of a very dark brown colour, black in drying, 



the branches forming a nearly level top, and the articulations with 



a central spot. 



2. H. elongata, ' fihmcnts dichotomous very much branched, 

 branches elongated the ultimate ones very slender, articulations 

 rather shorter than they are broad reticulated with veins, the 

 lower joints obsolete, ylg. p. 54. Conferva elongata, E. B. 

 t.242d. Dillw. Conf.t. S'S. 



Hab. Adhering to rocks, shells, and the larger Fuci. Firth of Forth, 

 near Kirkcaldy, Mr. Greville. 



The largest of our Conferva;, though not the longest, and aptly named 

 in some places Lohster-horn Conferva. It is in length from 4 to 8 

 or 9 inches, and of a dark purplish red colour. Capsules ovate, 

 sessile,by no means common ; still rarer are the minute fasciculated 

 pods, figured by Dillwyn in his supplementary plate. Tab. C. 



3. II. fucoides, filaments very much branched diffuse, branch- 

 lets subulate akcrnatc, articulations below bliortcr th.an broad, 

 above about half as long again at broad, capsules ovate-late- 



