450 
97. CYPERACE^. 
and a point between them, nut obovate trigonous smooth. — 
E. B. 542. St. 13. 3. E. viii. 310, 311.- Creeping, sometimes 
tuberous. St. 1 — 3 feet high, leafy. Spikes large, sometimes 
solitary. Stigmas 3, or rarely 2. congiohatus (s. f. Gray'); 
spikes all sessile]. A form from Oxlode, Cambs., with spikes 
1^ in. long is probably var. /uacrostachys (Eeichenb.). — Salt 
marshes. P. VII. ' E. S. I. 
2. S. sylvat'icus (L.) ; spikes clustered in a large cymose very 
compound terminal panicle, clusters stalked and sesaile, general 
bracts several leaflike, gl. blunt apiculate, nut obovate bluntly 
trigonous.— ^. i.'. 919. ,SV. 36. 8. 7?. viii. 313.— St. 2— 3 feet, 
high. Spikes very many, small, greenish, ovate. L. broad, 
flat. Stigmas 3. — /3. dissitiflOrus (Sond.) ; spikes mostly 
solitary and usually stalked. — [_S. radicans (Schk.), spikes all 
stalked, glumes not apiculate, stoles long and rooting, may 
possibly be found.] — Damp woods and banks. P. VII. E. S. I. 
3. S. triquetrus(L.); st. acutely triquetrous throughout, spike- 
lets in a small cymose panicle, gl. notched mucronate glabrous 
fringed with rounded blunt lobes, nut " roundish-obovate plane- 
convex smooth."— i:. B. 1694. St. 36. 3. R. viii. 305.— St. 
3 — 4 feet high, with concave faces ; 1 or 2 long sheaths at the 
base, the uppermost ending in a short broad triquetrous leaf. 
Lower bract long and rigid, resembling a prolongation of the 
stem. Spikelets small, stalked and sessile. Anth. with a short 
beardless point. Stigmas 2. — Muddy banks of the Thames near 
London ; the Arun, Sussex ; and the Tamar near Calstock, 
Cornwall. Shannon estuary below Limerick. P. VIII. E. 1. 
[ aS". americdmis (Pers.) ; st. acutely triquetrous throughout, 
S2)ikelets few sessile, gl. notched mucronate smooth with acute 
lobes, nut roundish-obovate plane-convex smooth. — E. B. S. 
2819. i?. viii. 304. S. Hothii Roppe'i St. 36. 4. S. pungens 
(Vahl) — St. 6 — 18 in. high, slender; with several sheaths 
at the base ending in lo'ng 7iarrow keeled leaves. Lower bract 
very long and rigid, resembling a prolongation of the stem. 
Spikelets large, ovate, blunt, all sessile. Anth. with a subulate 
fringed point. Stigmas 2. — St. Ouen's Pond, Jersey. P. 
VI. VII.] 
4. S. carindtus (Sm.) ; st. terete below bluntly trigonous up- 
wards, spikes in a small cymose panicle, gl. notched mucronate 
slightly asperous and pilose fringed, nut " convex on the back 
smooth."—^. B. 1983. ,S'. Duvallii Hoppe, St. .36. 2. R. viii. 
308. — St. 2 — 4 feet high ; with 1 or 2 long sheaths at the base, 
the uppermost ending in a leaf 3 or 4 in. long. Lower bract 
