MONOECIA MONANDRIA.
351. EUPHORBIA.
1. E. Peplus. Petty Spurge.
Sm. Eng, Fl. iv. 60 ; Eng. Bot. 959 ; Curt. Lond. Fasc. i.t. 35; Hook. Fl. Scot. 148.
On cultivated ground, everywhere.
2. E. exigua. Dwarf Spurge.
Sm. Eng. Fl. iv. 60 ; Eng. Bot. 1336 ; Curt. Lond. Fasc. iv. t. 36 ; Gr. Fl. Eds. 106 ; With. ii. 588 ; Berwick Flora, 197.
In corn fields near Cleadon, Fulwell, and Castle Eden, D. Near Norton, Wynyard, and Seaton, D. — J. Hogg, Esq. Near Prestwick. — Mr. W. Robertson. In Greenfield Moor-fields near Alnwick. — Mr. J. Davison. By the road side at the Inn below Mountholy, N. — Dr. G. Johnston
3. E. Lathyris. Caper Spurge.
Sm. Eng. Fl. iv. 61; Eng. Bot. 2225; With. ii. 588.
In corn stubble near Norton, D. — J. Hogg, Esq. Naturalized on the banks of Wear below Mr. Fox's garden, Durham.
A very doubtful native.
4. E. paralia. Sea Spurge.
Sm. Eng. Fl. iv. 63 1 Eng. Bot. 195; With. ii. 589.
On Sunderland ballast-hills, D. On Willington ballast-hills, N.
Plentiful on the Cumberland coast, but it does not appear to cross the Solway Frith.
5. E. helioscopia. Sun Spurge, Common Wart-wort.
Sm. Eng. Fl. iv. 63; Eng. Bot. 883; Curt. Lond. Fasc. i. t. 36; Hook. Fl. Scot. 148.
Everywhere, on cultivated ground.
6. E. striata. Upright Warty Spurge.
Sm. Eng. Fl. iv. 64; β Eng. Bot. 333 ; E. platyphylla. With. ii. 591, var. 2.
By the race below Rennoldson's Mill in Heaton Dene, N. Probably brought there with corn.
7. E. Cyparissias. Cypress Spurge.
Sm. Eng. Fl. iv. 66 ; Eng. Bot. 840 ; Gr. Fl. Eds. 106 ; With. ii. 593.
On the banks of hedges four miles south of Alnwick. — July 17, 1804; and naturalized on the walls of Hulne Abbey, N.
352. CALLITRICHE.
1. C. verna. Water Starwort.
Sm. Eng. Fl. i. 10 ; Wahl. Fl. Lapp. 2 ; C. aquatica, Eng. Bot. 722 ; Hook. Lond. 127 ; Fl. Scot. 259.
In ditches, ponds, &c.
When growing in deep pools the submersed leaves of this plant are linear, and in this state it has often been mistaken for the succeeding species.
2. C. autumnalis. Autumnal Water Starwort.
Wahl. Fl. Lapp. 2 ; Sm. Eng. Fl. i. 10 ; Berwick Flora, 3.
In pools of water in the vale below Langley Ford at the foot of Cheviot. — Dr. G. Johnston.
C. autumnalis, may be considered a rare species with us, though it is abundant in the deep ditches which communicate with Derwentwater in Cumberland. If the following distinctions be attended to, the two plants can never be confounded with each other, as has heretofore frequently been the case. C. verna.
Fruit stalks with two bracteas at their base, fruit regularly tetragonal, each portion bluntly keeled at the back. C. autumnalis. Fruit stalks without bracteas, fruit irregularly tetragonal, each portion broadly and acutely winged at the back. — Arnott, MSS.
253. ZOSTERA.
1. Z. marina. Grass Wrack.
Sm. Eng. Fl. i. 5 ; Eng. Bot. 467 ; With. iii. 658 ; Hook. Lond. t. 35 ; Gr. Fl. Eds. 188 ; Berwick Flora, 2.
At Jarrow Slake and Hartlepool, D. On Fenham Flats, N. Between Goswick Links and the Old Law — Thompson's Berwick Plants. Among the rejectamenta of the sea on the coast, abundant.
354. ZANNICHELLIA.
1. Z. palustris. Horned Podweed.
Sm. Eng. Fl. iv. 70; Eng. Bot. 1844; With. ii. 8; Gr. Fl. Eds. 187 ; Berwick Flora, 197.
In ditches near St. Peter's Quay, and in ponds at St. Anthon's, Walker, and Benwell, N. In ditches near Gateshead, in ponds near Hilton Castle, at Hebburn Quay, and Monkwearmouth, D. In the
pond at Scremmerston Lime-kilns, and ditches near Windmill Hill, Berwick. — Dr. G. Johnston.
MONOECIA TRIANDRIA.
355. TYPHA.
1. T. latifolia. Great Cat's-tail, or Reed-mace.
Sm. Eng. Fl. iv. 71 ; Eng. Bot. 1455; With. ii. 163; Gr. Fl. Eds. 188; T. major. Curt. Lond. Fasc. iii. t. 61 ; Berwick Flora, 197.
In slow streams and pools, common, N. and D. In the mill pond at Grange Bourn and North Fluve near Goswick. — Thompson's Berwick Plants.
2. T. angustifolia. Lesser Cat's-tail, or Reed-mace.
Sm. Eng. Fl. iv. 72 ; Eng. Bot. 1456 ; With. ii. 163; Hook. Fl. Scot. 259; T. minor, Curt. Lond. Fasc. iii. t. 62.
In a pond near the Friar's Goose, below Gateshead, D. In a pond by the road to Nesham from Darlington, D. — Mr. Janson.
356. SPARGANIUM.
1. S. ramosum. Branched Bur-reed.
Sm. Eng. Fl. iv. 74 ; Eng. Bot. 744 ; Curt. Lond. Fasc. v. t. 66 ; With. ii. 164 ; Gr. Fl. Eds. 189 ; Berwick Flora, 198.
In slow streams and pools.
2. S. simplex. Unbranched Upright Bur-reed.
Sm. Eng. Fl. iv. 75 ; Eng. Bot. 745 ; Curt. Lond. Fasc. v. t. 67; Gr. Fl. Eds. 189; With. ii. 164; Berwick Flora, 198.
In pools and slow streams, N. and D. By the sides of the Lough on Holy Island, and in the pond above Spindlestone, N. — Dr. G. Johnston.
3. S. natans. Floating Bur-reed.
Sm. Eng. Fl. iv. 75 ; Eng. Bot. 273 ; Gr. Fl. Eds. 189; With. ii. 164; S. simplex β, Hudson, 401.
In the rivers Derwent and Team, D. In the Ousebourn in Heaton Dene, and in the River Pont, N. In Prestwick Carr, N. — Mr. J. Thornhill.
