CL. IV.J 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-cleit, expanded. Filaments thread-shaped, very long, arising 

 from the mouth of the tube ; anthers roundish, two-celled. Ger- 

 men oblong. Style thread-shaped, as long as the stamens ; 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 destitute 



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'RBA. BURNET. 



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

 shaped, coloured. Corolla none. Filaments dilated upwards, as 

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

 rior, four-cornered. Style thread-shaped, short ; stigma notched. 

 Capsule four-cornered, one-celled, not bursting. Seeds one or 

 two, elliptical. Named from sanguis, blood, and sorbeo, to absorb. 



73. 



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

 what 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. pi. 1312. Eng. Fl. vol. i. p. 218. 254. 



11. EPIME'DIUM. BARREN-WORT. 



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

 rolla 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. 

 Germen 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 delicate 

 leaf, which is thrice ternate, with heart-shaped fringed leaflets : 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'RNUS. CORNEL. 



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

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

 than the petals ; anthers roundish, fixed sidewise. Germen infe- 



