122 ROSACES. [DBYAS. 



Stony, chiefly limestone and mountain districts, local, from Carnarvon and 

 Stafford to Orkney, ascends to 2,700 ft. ; descending to sea-level in N. and 

 W. Ireland ; fl. June-July. Stem tortuous, much branched. Leaves ^-1 in., 



glandular hairs, obtuse or subacute. Petals oblong. Achenes hispid ; awn 

 1-2 in. DISTRIB. of the genus. 



5. GE'UM, L. A YENS. 



Erect perennial herbs. Radical leaves crowded, pinnate ; terminal 

 leaflet very large ; stipules adnate to the petiole. Flowers solitary or 

 corymbose, white yellow or red, honeyed. Calyx inferior, persistent, with 

 5 bracteoles above its base ; lobes 5, imbricate or valvate in bud. Petals 

 5. Stamens crowded. Disk smooth or grooved. Carpels manv, recep- 

 tacle short or long ; styles filiform, straight or bent ; ovule 1, ascending. 

 Achenes many, on a dry receptacle, ending in filiform straight or bent 

 styles which are often hooked at the tip. DISTRIB. N. and S. temp, 

 and cold regions ; species 30. ETYM. yevoo, from the aromatic roots. 



1. G. urba'num, L. ; flowers erect, head of achenes sessile, awn with 

 a short glabrous hook at the tip, calyx-lobes reflexed in fruit. 



Borders of copses, hedgebanks, &c., from Caithness southd., ascends to near 

 1,700 ft. in the Lake district; Ireland; Channel Islands; fl. June-Ang. 

 Softly hairy. Stem 1-3 ft. Radical leaves long-petioled, interruptedly pin- 

 nate ; terminal leaflet 2-3 in. broad, suborbicular, obscurely lobed. crenate ; 

 lateral J-| in., oblong, sessile; cauline leaves variable; stipules foliaceous, 

 lobed and toothed. Flowers ^-f in. diam., yellow, proterogynous ; peduncle 

 slender. Petals obovate, spreading, as long as the acute calyx-lobes. 

 A chenes hispid, spreading; awn | in. ; receptacle hispid. DISTRIB. Europe 

 (Arctic), N. Africa, N. and W. Asia, Himalaya, N. America. 



2. G. riva'le, L. ; flowers drooping, head of achenes stalked, awn 

 jointed and hairy beyond the middle, calyx-lobes appressed in fruit. 



By streams, in copses, &c., from Devon and Sussex to Orkney ; ascends to 

 2,800 ft. in the Highlands ; Ireland ; fl. May- July.- Stem 1-lf ft., lower 

 part with soft reflexed hairs, very pubescent above. Leaves very variable, 

 much as in G. urba'num, but the segments are often numerous, the lateral 

 larger, and all more toothed; stipules small. Flowers 1-1| in. diam., 

 proterogynous, sometimes submonoacious. Calyx-segments red-brown, 

 acuminate, pubescent. Petals yellow, obcordate. Achenes more or less 

 hispid. DISTRIB. Europe (Arctic), N. and W. Asia, N. and S. America, 

 Australasia. 



G. intermedium, Ehrh., is a hybrid; flowers sometimes erect, petals of G. 

 urba'num but deeper coloured, calyx intermediate, not reflexed in fruit, 

 fruit usually sessile. Damp woods, not uncommon (often with riva'le, 

 seldom with urba'num, Syme). Bell Salter produced this hybrid artificially, 

 and it proved fertile. 



