108 TRIANDRIA. MONOGYNIA. Schcenus. 
Scales two-rowed. Spike-stalk flexuose, each seed lying within the 
corresponding curvature. Summits three, dark purple. Seed of a pearly 
lustre. 
Black Bog-rush. Welsh: Corserwynen ddu. S. nigricans. Linn. Willd. 
Sm. Hook. Cyperus nigricans. With. Ed. 7. Moors and bogs. In 
Purbeck, and on Canford and Wareham heaths. Pulteney. Feckenham 
moors; Coleshill bog. Purton. Bleasley and Fountain dale; Bullwell 
and Papplewick, Notts. P. June. E.) 
S. compres'sus. Straw sub-cylindrical, but tending to triangular; 
naked: spikets in two opposite rows: involucrum one leaf: 
florets with one husk: seed with bristles at the base. E. 
Dicks. II. S. — {E. Bot. 791. E.)— Leers , 1. 1— Pollich. 1. 2— Pluk. 34. 9— 
Mich. 31. Cyprella. K. — Scheuch. 11. 6. 
Straws cylindrical, somewhat flattened; below the spike three-sided and 
rough. Involucrum scarcely longer than the spike. Little spikes alter¬ 
nate. Scales fixed without any order to the receptacle. Summits two. 
Seed surrounded with six rough bristles. Leers. ( Root fibrous, rather 
creeping. Stem about a foot high. FI. Brit. E.) Involucrum either 
half as long, equally long, or twice as long as the spike. Its two-rowed 
spike would almost induce a reference to the genus Cyperus , did not a 
more accurate examination support its present arrangement: (and 
Professor Hooker observes, both in regard to this and the following 
species, that the glumes being, all but the lower one, fertile, might assi¬ 
milate with Scirpus. E.) 
Compressed Rush-grass. S. compressus. Linn. (Vahl. Hook. Grev. 
Carex uliginosa. Linn. Scirpus Caricis. Willd. Roth. Sm. Eng. FI. E.) Turf 
bogs. NearDitchinghamBath,Norfolk,and frequentin Suffolk. Mr.Wood¬ 
ward. (Marsh a mile west of Prestatyn, Flintshire. Mr. Griffith. Bootle 
north shore, near Liverpool. Dr. Bostock. Hinton Moor, near Bottisham 
Load, Cambridgeshire. Relhan. Hell-beck and Pindale Fell, Brampton. 
Hutchinson. Bogs between Ryhope and the sea, Durham. Mr. Winch. 
Ham Ponds, Kent. Dillwyn. Sea-coast near Bambrough. Mr. Winch. 
Common upon Farnham Mires, and elsewhere near Knaresborough. Rev. 
J. Dalton. Bot. Guide. Dumbarton Castle, by the river side. Hook. 
Scot. E.) P. July. 
S. ru'fus. Straw sub-cylindrical, spikes aggregate, two-ranked, few- 
flowered : leaves channelled, setaceous : seed without bristles. E.) 
{Dicks. II. S.—E.Bot. 1010. E.)— Light/. FI. 24. 2. 
(Allied to the last, especially in the distichous spikes; but much slenderer. 
Leaves much shorter, never plane. Spikes ovate, dark brown, of five 
or six spikelets, each of three or four flowers. Glumes more obtuse. 
Hook. E.) 
Tawny Rush-grass. (Welsh: Corsfrwynen rudd. S.rufus. Huds. FI. 
Brit. Vahl. Hook. Grev. S. compressus var. Lightf. S.ferrugineus. With. 
Ed. 2. This has often been described for S.ferrugineus, which I believe 
has never been found in Britain. Sm. Scirpus rufus. Schrad. Sm. Eng. FI. 
E.) Marshes, in the Isle of Skye and Mull, and near Glasgow. 
(Near Dunglas Castle. Lightfoot. On the coast to the east of Dunbar. 
Mr. J. Mackay. Near Primrose Bridge, between Bootle and Crosby 
rabbit-warren, near Liverpool. Mr. Shepherd. Near Aberfraw and 
Bodowen, Anglesey. Rev. Hugh Davies. In marshes on the Wear, 
below Southwick, near Hartlepool. Rev. J. Dalton, in Winch Guide. E. 
P. July. 
