Mougeutia.] ALG.E CONTERVOIDEJE, 359 



44. C. drcta, Dillw. (close green Conferva); filaments elongated 

 forming silky tufts of a full ieruginose-green colour much 

 branched, branches erecto- patent crowded, ramuli erect appres- 

 sed opposite or alternate, lower articulations as long, upper 

 much longer than broad. — Dilltv. Conf. t. E. — E. Bot. t. 2098. 

 Ag.Syst. Alg.p. 118. — C. Vaucheriaformis, Ag. Syst. Alg.p. 118 



On various other Algcc. Bantry, Miss Hutchins. Appin, Captain 

 Carmichael. — Filaments 3 — 6 inches long, forming fine tufts, very glossy, 

 much branched, stoloniferous. The joints are subject to much variation 

 in length ; and I have sometimes feared that the two preceding species, 

 as well as C. tsruginosa, are merely varieties of the present. — They are 

 all equally remarkable for a bright glossy-green colour, a flaccid texture 

 and a propensity to cast out, from their lower part, long, flexuose, creep- 

 ing fibres or stolones. 



45. C. aeruginosa, Huds. (branching Verdigris Conferva); 

 <; filaments branched flexuose short aeruginose, branches scatter- 

 ed patent obtuse, articulations rather longer than broad." — DiUic, 

 Conf.Syn.t. E. — C. marinas capillacea,brevis,viridissima, mollis, 

 Dill Hist. Muse, t. 4.f 20. 



On Fuci; Dilleuius, who alone appears to have met with it. 



46. C. ripdria, Roth, (entangled shore Conferva); filaments 

 elongated slender decumbent pale-green forming wide strata, 

 flaccid entangled angulato-nYxiiose slightly branched, lower 

 branches short tentacular, upper long subsimple with rounded 

 axils, articulations '2 — 4 times longer than broad. — Dillw. 

 Conf Syn. t. E.—E. Bot. t. 2100. Ag. Syst. Alg. 106— C. 

 obtusang/ila, Lyngb, Hydroph. Dan. t. 55. 



On sand-covered rocks, near high-water mark. Bantry, Miss Hutch- 

 ins. Appin, Captain Carmichael. Sunderland, Mr. "'. Backhouse. 

 Yarmouth, Diliwyn. — Tower branches short, spuriously articulated, 

 and evidently of the same nature as the tentacular roots of our C. ptr- 

 repians: upper ones very few, long, with rounded axils. 



67. Hydrodictyon. Roth. Water-net 

 Filaments forming a network, with regular polygonal meshes, 



articulations viviparous. — Name; Love, water, and r'.rio.u/at- 

 irorh. 



1. II. utriculatunt, Roth, (common Water-net); meshes pen- 

 tagonal. — //. pentagonnm, Vouch. — Conferva reticulata, 11. / 

 /. 1687. Dillw. Conf t. 97. 



Hare. Ditches and pools in the middle and louthem parts pf Bag* 

 land; not found in Scotland of Ireland. — This forma a beautiful tubu- 

 lar net, floating freely in the water. The meshes are pentagonal or 

 hexagonal, varying in diameter from half a line to half an inch, and the 

 filaments from the width of a human hair to th.it of the coarsest fa 

 bristle. 



68. Mm ..I ,,ti v. . \g, Mougeotia. 



FMamenti Bxticulated r sirople, finally united by transverse tubes. 



