376 92. TTPHACEiE. 



1. Tt'pha Linn. Eeed-mace. 



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

 parts of spikes not separated, style exceeding the bristles, stig. 

 oblique ovate-lanceolate.— jB^. B. 1455. R. ix. 323.— St. 6—7 

 feet higb. L. overtopping the inflorescence, very broad. Spikes 

 very long, sometimes there is a very short space between them ; 

 fertile blackish brown. — [In T. Shuttleioorthii (Koch), R. ix. 

 322, the style equals the bristles.] — Ponds and lakes. P. VI. 

 VII. E. S. I. 



2. T. angustifdlia (L.) ; 1. linear channelled below, sterile and 

 fertile parts of spiJees a little separated, style exceeding the 

 bristles, stig. long filiform.—^. S. 1456. JR. ix. .321.— St. 5—6 

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

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

 rated by a flowerless interval of about an inch ; fertile reddish 

 brown. — \_T. gracilis (Suhr.), iJ.ix. 320, has a rounded spathulate 

 stigma.] — Lakes and ponds. P., VI. VII. E.S.I. 



2. Spaesa'nium: Linn. Bur-reed. 



1. S. ramdsum (Hiids.) ; 1. triqueti'ous at the base with con- 

 cave sides, St. hrandied above, 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 sphe- 

 rical. L. long, linear, erect. — Ditches. P. VI. VII. E. S. I. 



2. S. sim'plex (Huds.) ; 1. trigonous at the base, st. simple, 

 stigma linear-subulate, fr. slightly stalked subfusiform. — -E. B. 



745. R. ix. 325. — St. 1 — 2 ft. high, long, erect or ascending. 

 L. long, often floating (and then often mistaken for S. nutans) ^ 

 sheath slightly furrowed, not inflated. Heads many ; barren 

 several, sessile ; fertile shortly stalked, especially the lowest. 

 Fr. oblong, narrowed into a long beak, eflipt'ic-fusiform. — 

 Ditches, P. VII. E. S. I. 



3. S. nutans (L.) ; st. simple flaccid, floating 1. veiy long 

 linear flat at the base from a dilated sheathing base, heads many 

 distant, lower fertile heads stalked, male heads several sessile, 

 stig. linear-lanceolate, fr. stalked ohlong not longer than its subu- 

 late beak.—S. affine t^chn. 8\j. E. B. 1389. 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, 

 rare. P. VIII. E. S. I. 



4. S. min'imum (Fr.) ; st. simple flaccid, 1. linear floating 



