CL. XII.] ICOSANDKIA POLYGYJSTIA. 225 



procumbent at the base: leaves ternate: leaflets oblong, deeply 

 serrate, acute: calyx ribbed, hairy : petals bright- yellow. The 

 root of this plant is used very extensively in the Hebrides for 

 tanning. From its astringent quality, it is also employed as a 

 gargle in enlarged tonsils and other diseases of the throat. Peren- 

 nial : flowers in June and July : grows in pastures, heaths and 

 woods : common. Eng. Bot. vol. xii. pi. 863. Eng. Fl. vol. ii. p. 

 428. 786. 



2. T. reptans. Trailing Tormentil. Stem prostrate, scarcely 



branched ; leaves stalked. Root woody : stems about two feet 



long: leaves ternate or quinate : leaflets inversely egg-shaped, 

 hairy, deeply serrate : calyx ribbed, hairy : petals bright-yellow, 

 larger than in the last species, of which some have taken this as a 

 variety. Both species have occasionally five petals, and ten seg- 

 ments to the calyx. Perennial : flowers in June and July : grows 

 in woods and barren pastures: common. Eng. Bot. vol. xii. pi. 

 864. Eng. Fl vol. ii. p. 428. 



10. GE'UM. AVENS. 



Calyx inferior, of one leaf, the limb deeply divided into ten 

 acute segments, of which five alternate ones are much smaller. 

 Petals five, rounded, undivided or cleft, as long as the calyx. 

 Filaments awl-shaped, shorter than the corolla ; anthers short, 

 roundish, two-celled. Germens superior, egg-shaped, com- 

 pressed, numerous, collected into a round head. Styles long, 

 lateral, with a joint above the middle, one to each germen ; 

 stigma simple. Seeds egg-shaped, compressed, hairy. Re- 

 ceptacle cylindrical, dry, hairy. Named from geuo, to smell 

 agreeably. 255. 



1. G. urbdnum. Common Av ens. Herb Bennet. Leaves ternate, 



root-leaves somewhat lyrate; flowers erect; styles naked. 



Eoot of large fibres : stems erect, two feet high, round, branched 

 at the upper part : root-leaves on long stalks, interruptedly pin- 

 nate, with a large rounded terminal leaflet : stem- leaves ternate, 

 stalked : uppermost leaves simple, three-lobed : flowers terminal, 

 solitary, stalked, with yellow petals : styles curved. A variety 

 occurs, intermediate between this and the next species. The roots 

 gathered in the spring, and put into ale, give it a pleasant flavour. 

 Perennial : flowers from May to September : grows in woods, 

 hedges, and waste places: common. Eng. Bot. vol. xx.pl. 1400. 

 Eng. Fl. vol. ii. p. 430. 788. 



2. G. rivdle. Water Avens. Root-leaves interruptedly pinnate, 

 somewhat lyrate ; flowers drooping ; styles hairy. Root some- 

 what woody, creeping : stem nearly a foot high, slightly panicled : 

 root-leaves stalked, the terminal lobe very large, rounded, lobed 

 andcrenate: stem-leaves tern ate or three-lbbed: flowers drooping : 

 calyx purplish-brown : petals erect, cleft, yellowish-brown. The 

 root is astringent and aromatic. Perennial : flowers in June and 

 July : grows in moist meadows and woods, and by ditches and 

 streams. Eng. Bot. vol. ii. pi. 106. Eng. Fl. vol. ii. p. 431. A va- 

 riety intermediate between this and the preceding is not uncom- 

 mon. 789. 



11. DRY' AS. MOUNTAIN AVENS. 



Calyx inferior, of one leaf, flat, permanent, the limb deeply 

 divided into eight or ten permanent segments. Petals eight, 



