TYPHA. SPARGANIUM. 347 



2. SPARGANIUM. Fl. in dense globose heads, each with a 

 single 3 4 -leaved perianth. Stam. free. Fruit dry, ses- 

 sile. 



1. TYPHA Linn. Reed-mace. 



1. T. latifolia (L.); 1. linear nearly flat, sterile and fertile 

 spikes contiguous, style exceeding the bristles, stig. oblique 

 linear- subulate rounded below. E. B. 1455. R. ix. 323. St. 

 6 7 feet high. L. overtopping the inflorescence, very broad. 

 Spikes very long. [In T. Shuttleworthii (Koch), R. ix. 322, the 

 style equals the bristles.] Ponds and lakes. P. VI. VII. 



2. T. angustifolia (L.) ; 1. linear channeled below, sterile and 

 fertile spikes a little separated, style longer than the bristles, 

 stig. long filiform. .E. B. 1456. R. ix. 321. St. 56 feet 

 high, much slenderer than in the preceding. L. very narrow, 

 overtopping the inflorescence. Spikes very long, slender, sepa- 

 rated by an interval of about an inch. [T. gracilis (Suhr.), R. 

 ix. 320, has a rounded spathulate stigma.] Lakes and ponds. 

 P. VI. VII. 



[T. minor (Sm.) ; 1. linear-setaceous overtopped by the 

 distant spikes. E. B. 1457. Reported to have been found on 

 Hounslow Heath. Dillenius. P. VII.] 'E. 



2. SPARGANIUM Linn. Bur-reed. 



1. S. ramosum(H.Vi&s.)', 1. triangular at the base with concave 

 sides, st. branched, stigma linear, fl. sessile. E. B. 744. R. ix. 

 326. St. erect, about 2 feet high ; lower branches with several 

 heads, 1 3 fertile, the rest barren. Heads spherical. L. long. 

 Ditches. P. VII. 



2. S. simplex (Huds.) ; 1. trigonous at the base, st. simple, 

 stigma linear, fr. slightly stalked subfusiform. E. B. 745. R. 

 ix. 325. About 1 foot high. L. long, often floating ; sheath 

 slightly fun-owed, not inflated. Heads many; barren several, 

 sessile ; fertile shortly stalked, especially the lowest. Fr. ob- 

 long, narrowed into a long beak, elliptic-fusiform. Ditches. 

 P. VII. 



3. S. natans (L.) ; st. simple flaccid, floating 1. very long linear 

 from a dilated sheathing base, heads many panicled distant, fertile 

 heads spiked, barren male heads several sessile, fr. stalked oblong 

 not longer than its subulate beak. S. ajftne Schn., R. ix. 417. 

 St. much thicker than in the next plant. L. grass-green, very 

 long. Male heads fewer in our plant than in the Swedish. 

 Lakes in Scotland. Cunnamara, Ireland. Mr. D. Moore. Snow- 

 don. P. VIII. 



