ICOSAND. POLYGYN. 165 



10. GEUM. 



1. G. urhanum {common Avens), flowers erect, awns naked, cau- 

 line leaves ternate, radical ones lyrato-pinnate. LightJ. p. 273. 

 E. B. t. 1400. 



Hab. Woods and hedges, frequent. Fl. June. 2/ . 



Root with a sweet smell that has heen compared to cloves. Stems 

 erect, 1 — 2 feet high. Leaz^es very variable. J?«f/ica^ ones on long 

 footstalks, with 2 or 4 small lateral pinnae and a great terminal 3- 

 lobed leaflet. Stem leaves sessile, ter- or quinate : the lower leaflets, 

 as Sir James Smith observes, however, may rather be considered 

 large stipules, ovate, the rest lanceolate ; all of them inciso-serrate. 

 Flowers small,, yellow. Petals roundish, entire, patent^ as well as 

 the cal. 



2. G. rivale {IVater Avens), flowers drooping, awns feathery, 

 cauline leaves ternate, radical ones interruptedly piunato-ly- 

 rate. Light/, p. 274. E.B.t. 106. 



Hab. Marshes and wet moory grounds, frequent. Fl. June, July. 1/ . 



Shorter but stouter than the last, and less branched. Flov:ers much 

 larger, with erect purplish calyces and erect dull orange-coloured 

 petals, which are clawed and broadly obcordate. Head of fruit pe- 

 dicellate. Aicns hooked in both species. — There is a var. found in 

 Collington woods by Mr. Maughan, which seems precisely inter- 

 mediate between this and G. urbanum, and which Smith suggests 

 may be a hybrid. 



II. DRYAS. 



i. Dr. octopetala {Mountain Avens), petals 8, leaves simple ser- 

 rated. Light/, p. 274, E.B.t. 451. 



Hab. Highland mountains, in many places. Upon the micaceous 

 mountains in Breadalbane ; and on the limestone rocks in Skye ,■ 

 on a vast limestone tract called Creg-achnocaen, on the confines 

 of Ross-shire and Sutherland, Lightf. Upon Carn-dearg, in Glen 

 Creran, and near the top of Malmore, in Glenco, Argyleshire, Dr. 

 Stuart. Braes oflnver Naver, and common along the coast of Su- 

 therland, Mr. Borrer and Hook. Fl. June. 1/ . 



Stem short, procumbent, scaly from the withered bases of old leaves. 

 Leaves ovato-elliptical, evergreen, glabrous and wi'inkled' above, 

 white and downy beneath, margins revolute. Petioles longer than 

 the leaves. Peduncles downy, the down mixed as on the underside 

 of the leaves with purple glands or bristles, solitaiy. Flowers large, 

 white. 



12. COM ARUM. 



1 . C. palustre {Marsh Cinqne-fuil) . Lightf. p. 276. E. B. 1. 1 72. 



Hab. Peat-bogs and marshes, frequent. F/. July. %. 



Stems 6 — 8 inches long, ascendent. Leaves petiolate, with 7 lanceo- 

 late deeply serrated leaflets ; upper ones quinate or ternate, ses- 

 sile 3 with a pair of ovate entire or cut stipules. Flomer-'stalk 

 branched. Flowers dingy purple, with a large, coloured, spreading 

 ral. and veiy minute petals. Scarely different in genus from Poten- 

 tilla, where, indeed, Ncstlcr places it. 



