4. V. Dillwynii.
Gr. Alga;, 191; Fl. Eds. 305; Berwick Flora, ii 251; Conferva frigida, Dillwyn. t. 16.
β C. amphibia, Dillwyn, t. 41.
α In moist shady places. β in ponds and ditches.
5. V. granulata.
Gr. Fl. Eds. 306; Tremella granulata, Eng. Bot. 324.
On the ground in damp places.
224. NODULARIA.
1. N. fluviatilis.
Gr. Fl. Eds. 300; Conferva fluviatilis, Dillwyn. t. 29; Eng. Bot. 1763; Lemanea fluviatilis, Hook. Fl. Scot. ii. 84; Berwick Flora, ii. 246.
In Cawsey Bourn and rivulets near Lanchester, also in all the rivulets in the west of the county of Durham. Among the Cheviots, and in the Irthing at Gilsland, N.
225. DICTYOSIPHON.
1. D. foeniculatum.
Gr. Algae, 56; Berwick Flora, ii. 246; Conferva foeniculata, Lightfoot, 981; Halymenia subtilis, Hook. Fl. Scot. ii. 108.
In rocky pools on the Durham coast. Near Berwick. — Dr. G. Johnston.
226. GLOINEMA.
1. G. foetidum.
Gr. Fl. Eds. 301; Conferva foetida, Dillwyn, t. 104; Eng. Bot. 2101.
On rocks and stones at Tynemouth, N. At Hartlepool, D.
227. BANGIA.
1. B. fusco-purpurea.
Gr. Fl. Eds. 301; Berwick Flora, ii. 259; Conferva fusco-purpurea, Eng. Bot. 2055; Dillwyn, t. 92; C. atro-purpurea, Dillwyn, t. 103; Eng. Bot. 2085; Gr. Algae, 177.
In Limestone caves between Sunderland and Shields, on Marsden Rocks and Sunderland Pier, D. On Blackhall Rocks, D. — John Hogg, Esq. Near Berwick upon Tweed, N. — Dr. G. Johnston.
2. B. Johnstoni.
Greville, MSS., Berwick Flora, ii. 260.
On Slate rocks near Berwick. Not uncommon at high-water mark. — Dr. G. Johnston.
3. B. Laminariae.
Gr. Fl. Eds. 302; Berwick Flora, ii. 259.
Parasitical on the fronds of Laminaria esculenta. — Dr. G. Johnston.
4. B. ? atro-virens.
Gr. Fl. Eds. 302; Conferva atro-virens, Dillwyn, t. 25; Cornicularia pubescens, Ach. Syn. 302; Lichen pubescens, Eng. Bot. 2318; Lightfoot. 893.
On Simonside and Cheviot, N. On stones in Hag Crag in Teesdale Forest, D. — Rev. J. Harriman.
228. SCYTONEMA.
1. S. ocellatum.
Gr. Fl. Eds. 302; Conferva ocellata, Dillwvn, Sup. t. D.; Eng. Bot, 2530.
In springs near Hamsterley, D. — Mr. Backhouse.
2. S. comoides.
Conferva comoides, Dillwyn, t. 27; Eng. Bot. 1700; C. radicans, Dillwyn, 72, t. C.; Eng. Bot. 2138.
On rocks, stones, and the stems of Fuci, N. and D. Near Seaton, D. — Mr. Backhouse.
3. S. Myochrous.
Conferva Myocrous, Eng. Bot. 1555; Dillwyn. t. 19.
In springs near Darlington, D. — Mr. Backhouse.
229. OSCILLATORIA.
1. O. limosa.
Gr. Fl. Eds. 303; Berwick Flora, ii. 265; Conferva fontinalis, Dillwyn, t. 64.
In slow streams, ponds, &c., common, floating on the surface of the water.
2. O. tenuis.
Gr. Fl. Eds. 303; Conferva limosa, Dillwyn. t. 20; Eng. Bot. t. 2053.
In wells and slow streams.
3. O. ochracea.
Gr. Fl. Eds. 304; Berwick Flora, ii. 265; Conferva ochracea, Dillwyn, t. 62.
In springs near Darlington, D. — Mr. Backhouse. Near Benwell, N.
I suspect that this plant owes its colour, from the water in which it grows, being impregnated with iron.
4. O. scopulorum.
Gr. Fl. Eds. 304; Conferva scopulorum, Eng. Bot. 2171; Dillwyn, Sup. t. A.
On rocks on the coast.
5. O. viridis.
Bot. Gall. ii. 993; Berwick Flora, ii. 264.
On mud in stagnant water. In the Low below Goswick, N. — Dr. G. Johnston.
6. O. decorticans.
Gr. Fl. Eds. 304; Conferva decorticata, Dillwyn, t. 26.
On damp wood and pumps, also on walls.
7. O. confervicola.
Conferva confervicola, Dillwyn, t. 8; Eng. Bot. 2576.
On the stems of Algae.
8. O. vaginata.
Conferva vaginata, Dillwyn, t. 99; Eng. Bot. 1995; Vaginaria epthonoplustes, Gr. Fl. Eds. 305, f. 1; Gray, i. 280.
On damp walls, garden posts, &c.
9. O. aeruginea.
Dillwyn, t. T.E.; Northumberland and Durham Guide, ii. 75.
On the beach near Hartley, N. Near Sunderland, D.
10. O. violacca.
Berwick Flora, ii. 264; Conferva violacca, Hudson, 592; C. confragosa. With. iv. 156; Lightfoot. ii. 976; C. mucosa, Dillwyn, Muse. 15, t. 2, f. 4.
On stones in rapid streams near Berwick. — Dr. G. Johnston.
230. BULBOCHAETA.
1. B. setigera.
Agardh, Syn. Conferva vivipara, Dillwyn, t. 59; Eng. Bot. 2086.
At Rice Carr, D.—Mr. Backhouse.
231. ASPEROCAULON.
1. A. Arbuscula.
Gr. Fl. Eds. 307; Conferva arbuscula, Dillwyn, t. 85; Eng. Bot. 1916.
