348 MONffiCIA TRIANDRIA. \JCL. XXI. 



TRIANDRIA. 

 3. TY'PHA. REED-MACE. 



Barren flowers numerous, arranged in a dense, cylindrical, 

 hairy, terminal catkin, the common stalk of which is hairy or 

 scaly. Calyx none. Corolla none. Anthers about three, ob- 

 long, furrowed, drooping, placed on a common filament. 



Fertile flowers numerous, in the lower part of the same catkin. 

 Calyx none. Corolla none. Germen superior, oblong, stalked. 

 Style hair-like ; stigma simple. Seed solitary, egg-shaped, on a 

 bristly stalk. Named from tiphos, a marsh. 422. 



1. T. latifolia. Great Cat's-tail or Reed-mace. Leaves linear, some- 

 what convex beneath ; catkin continuous, its common stalk hairy. 



Stems about six feet high, erect, round, leafy at the bottom : catkin about 

 a foot long, brown. Perennial : flowers in July : grows in the borders 

 of ponds, lakes, and rivers: frequent. Eng. Bot. vol. xxi. pi. 1455. Eng. 

 Fl. vol. iv. p. 71. 1280. 



2. T. angustifolia. Lesser Cat's-tail or Reed-mace. Leaves linear, 

 convex beneath, channelled above ; barren and fertile catkins separated 



from each other, the common stalk scaly. Stems about four feet high. 



Perennial : flowers in June and July : grows in pools and ditches : rare. 

 Eng. Bot. vol. xxi. pi. 1456. Eng. Fl. vol. iv. p. 72. 1281. 



4. SPARGA'NIUM. BUR-REED. 



Flowers arranged in several dense heads. 



Barren flowers numerous, in one or more superior heads. 

 Calyx of three or more oblong, equal, deciduous leaves. Corolla 

 .none. Filaments three, hair-like, erect, longer than the calyx; 

 anthers roundish, two-celled. 



Fertile flowers numerous, in dense heads under the former. 

 Calyx of three or more oblong, equal, deciduous leaves. Corolla 

 none. Germen superior, egg-shaped. Stigma awl-shaped, or egg- 

 shaped, oblique, downy on one side, permanent. Drupe inversely 

 egg-shaped, beaked, dry, one-celled. Nut solitary, egg-shaped. 

 Name, from sparganon, a little band. 423. 



1. S. ramosum. Branched Bur-reed. Leaves triangular at the base, 

 their sides concave ; common flower-stalks branched ; stigma awl-shaped. 



Stem erect, from two to three feet high. Perennial: flowers in July 



and August : grows in ditches and by the sides of lakes and pools : com- 

 mon. Eng. Bot. vol. xi. pi. 744. Eng. Fl. vol.iv. p. 74. 1282. 



2. S. simplex. Unbranched Bur-reed. Leaves triangular at the base, 

 with the sides nearly flat: common flower-stalk unbranched ; stigma 



linear. Stem erect, about two feet high. Perennial: flowers in July 



and August : grows in ditches, and by the sides of lakes and pools : fre- 

 quent. Eng. Bot. vol. xi. pi. 745. Eng. Fl. vol. iv. p. 75. 1283. 



3. S. ndtans. Floating Bur-reed. Leaves floating, flat; common 



flower-stalk unbranched ; stigma egg-shaped, very short. Stem a few 



inches above the water. Perennial: flowers in July: grows in pools, 

 lakes, and rivers: common in Scotland. Eng. Bot. vol. iv. pi. 273. Eng. 

 Ft. vol.iv. p. 75. 1284. 



