CL. IV.] TETRANDRIA MONOGYNIA. 103 



9. CENTU'NCULUS. CHAFF-WEED. 



Calyx inferior, of one leaf, four-cleft, permanent. Corolla 

 of one petal, tubular, not permanent, tube nearly globular; 

 limb four-cleft, expanded. Filaments thread-shaped, very long, 

 arising from the mouth of the tube ; anthers roundish, two- 

 celled. Germen oblong. Style thread-shaped, as long as the 

 stamens j stigma acute. Capsule globose, one-celled. Seeds 

 numerous, minute, fixed to the central receptacle. Name 

 doubtful. 72. 



1. C. minimus. Small Chaff-weed. Flowers sessile ; corolla des- 

 titute of glands at the base. From one to two inches high : 



leaves sessile, egg-shaped, smooth : flowers axillar, solitary, sessile, 

 white. Annual : flowers in June : grows on moist sandy ground : 

 rare. Eng. Bot. vol. viii. pi. 531. Eng. Fl. vol. i. p. 217. 253. 



10. SANGUISO'KBA. BURNET. 



Calyx superior, of one leaf, deeply four- cleft, the segments 

 egg-shaped, coloured. Corolla none. Filaments dilated up- 

 wards, as long as the calyx ; anthers roundish, two-celled. 

 Germen inferior, four-cornered. Style thread-shaped, short ; 

 stigma notched. Capsule four-cornered, one-celled, not burst- 

 ing. Seeds one or two, elliptical. Named from sanguis, blood, 

 and sorbeo, to absorb. 73. 



1. S. officindlis. Great Burnet. Spikes egg-shaped. A hard, 



somewhat woody plant, about two feet high : stem erect, furrowed : 

 leaves pinnate : leaflets heart-shaped, serrate, about four pairs, 

 with a terminal one : spikes about an inch long, purple. Perennial : 

 flowers in June and July: grows in moist pastures, chiefly in the 

 north of England and south of Scotland. Eng. Bot. vol. xix. pL 1312. 

 Eng. Fl. vol. i. p. 218. 254. 



11. EPIME'DIUM. BARREN- WORT. 



Calyx inferior, of four small egg-shaped deciduous leaves. 

 Corolla of four egg-shaped, equal petals. Nectaries four, lying 

 upon the petals, nearly as large. Filaments awl-shaped, close 

 to the style ; anthers oblong, two-celled, opening from the base 

 upwards. Germeii oblong. Style roundish, as long as the 

 stamens ; stigma simple. Pod oblong, tapering to a point, 

 one-celled, two-valved. Seeds numerous, oblong. Name of 

 doubtful origin. 74. 



1. E.Alpinum. Barren-wort. Stem-leaf thrice ternate. Root 



slender : stems simple, about a foot high, each bearing a single de- 

 licate leaf, which is thrice ternate, with heart-shaped fringed leaf- 

 lets : petals dark-red, with pale- yellow nectaries. Perennial : 

 flowers in May : grows in thickets in the mountainous parts of the 

 north of England : rare, and certainly not indigenous. Eng. Bot. 

 vol. vii. pi. 438. Eng. Fl. vol. i. p. 220. 255. 



12. CO'RNXJS. CORNEL. 



Calyx superior, very small, four-toothed, deciduous. Corolla 

 of four oblong, equal petals. Filaments awl-shaped, erect, 



