CL. III.] TRIANDRIA MONOGYNJA. 65 



high, sheathed at the base with broad scales of a blackish colour, the 

 uppermost of which bear narrow acute leaves : spikelets black : anthers 

 long, yellow : stigmas dark purple : seed white, shining. Perennial : 

 flowers in June : grows in bogs and wet moors ; common. F.ng. Bot. 

 vol. xvi. pi. 1121. Eng. Fl. vol. i. p. 52. 70. 



7. RHYNCHO'SPORA. BEAK-RUSH. 



Calyx a chaff-scale. Corolla none, excepting a few bristles. 

 Spikes of a few flowers, together with numerous, empty, crowded 

 chaff-scales, imbricated all round. Filaments hair-like ; anthers 

 linear, erect. Germen superior, roundish. Style hair-like, en- 

 larged at the base. Seed roundish, hard, crowned by the per- 

 manent base of the style. Named from rhync/ios, a beak, and 

 spora, a seed. 23. 



1. R. alba. White-headed Beak-rush. Leaves tapering, linear, chan- 

 nelled ; spikes forming a somewhat corymbose head ; stamens two. 



Stem from five to ten inches high, triangular, very slender : leaves erect : 

 larger floral leaf a little longer than the head of flowers, which is white : 

 stigmas two : seed inversely egg-shaped. Perennial : flowers in July and 

 August : grows on wet heaths and in boggy places : common. Fug. 

 Bot. vol. xiv. pi. 985. Eng. Fl. vol. i. p. 52. 71. 



2. R. fusca. Brown-headed Beak-rush. Leaves thread-shaped ; 



spikes forming an egg-shaped head ; three stamens. Smaller than 



the last : leaves not tapering : head of flowers reddish-brown. Peren- 

 nial : flowers in June : grows in bogs, chiefly in the South of England 

 and in Ireland : rare. Eng. Bot. vol. xxii. pi. 1575. Eng. Fl. vol. i. 

 p. 53. 72. 



8. CYPE'RUS. CYPERUS. 



Calyx a chaff-scale. Corolla none. Spikes of numerous 

 flowers, all perfect, excepting one or two at the bottom, imbri- 

 cated in two rows. Filaments short ; anthers linear. Germen 

 roundish ; style deciduous. Seed pointed. Name, cypeiros of 

 the Greeks. 24. 



1. C. lon'gus. Sweet Ci/perus. English Galingale. Umbel leafy, 



twice compounded ; fruit-stalks naked ; spikes alternate. Stem from 



two to three feet high : spike-stalks sometimes amounting to twelve or 

 thirteen, forming an umbel : spikes brown, five or six together. The 

 root is agreeably aromatic to the smell, and warm and bitter to the taste. 

 Perennial : flowers in July : grows in marshes : very rare. By a rivulet 

 between St. David's Town and St. David's Head ; at Walton, in 

 Gordon, Somersetshire. Eng. Bot. vol. xix.pl. 1309. Eng. Fl. vol. i. 

 p. 54. 73. 



2. C. fus'cus. Brown Cyperus. Umbel with three leaves, compound ; 



spikes crowded, spreading in all directions. Stem about six inches 



high : spikes numerous, brown. Annual : flowers in September. Found 

 by Mr. Haworth in a meadow near Little Chelsea. Etig. Bot. Snppl. 

 pi. 2626. Eng. Fl. vol. i. p. 54. 74. 



9. SCI'RPUS. CLUB-RUSH. 



Calyx an egg-shaped, concave chaff-scale. Corolla none. 

 Spike of numerous flowers, all perfect. Filaments thread-like ; 



