CL. III.] TRIANDRIA MONOGYKIA. 65 



Root of very long fibres, forming a thick tuft : stem about a 



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

 colour, the uppermost of which bear narrow acute leaves : spike- 

 lets black : anthers long, yellow : stigmas dark purple : seed white, 

 shining. Perennial : flowers in June : grows in bogs and wet 

 moors; common. Eng. 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, enlarged at the base. Seed roundish, hard, crowned 

 by the permanent base of the style. Named from rhynchos, a 

 beak, and spora, a seed. 23. 



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

 channelled ; spikes forming a somewhat corymbose head ; stamens 

 two. Stem from five to ten inches high, triangular, very slen- 

 der : 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. Eng. Bot. vol. xiv. pi. 985. Eng. FL 

 vol. i. p. 52. 71. 



2. R.fiisca. 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. 

 Perennial : flo'vei-s in June : grcw's in bogs, chiefly in the South 

 of England and in Ireland: ra^e. Eng. Bot. vol. xxii. pi. 1575. 

 Eng. Fl vol. i. p. 53. 72. 



8. CYPE'RUS. CYPERTJS. 



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 5 anthers linear. Germen 

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

 the Greeks. 24. 



1 . C. lon'gus. Sweet Cyperus. English Galingale. Umbel leafy, 

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

 Stem from two to three feet high : spike-stalks sometimes amount- 

 ing 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. pi. 1309. Eng. Fl. vol. i. p. 54. 73. 



2. C. fus'cus. Brown Cyperus. Umbel with three leaves, com- 

 pound ; 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. Eng. Bot. Suppl. pi. 2626. Eng. Fl. vol. i. p. 54. 74. 



9. SCI'RPUS. CLTJB-RTJSH. 



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

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



