globose or slightly elongate, 5-12 mm. long; achenes small, sparsely puberulent 

 to glabrous on faces, with a hooked beak. G. oregonense (Scheutz) Rydb. 



Wet meadows in mts., seepage along streams and wet soil about lakes and ponds 

 in N. M. (San Juan, Santa Fe, San Miguel and Taos cos.) and Ariz. (Apache, 

 Coconino and Graham cos.), May-Sept.; Mich, to B. C, s. to N. M., Ariz, and 

 Calif. 



4. Geum triflorum Pursh. Oldman-whiskers, grandfathers-beard. 



Perennial with thick scaly rootstocks, forming clumps to 3 dm. across or more; 

 flowering stems to about 3.5 dm. tall, with a pair of opposite much-reduced 

 leaves with leafletlike stipules about midway its length; leaves mostly basal, oblong 

 to obovate, 5-15 cm. long, unequally and interruptedly pinnate to pinnatifid or 

 lyrate above; leaf segments as many as 29, unequal, the primary ones from 

 deeply cleft into linear or oblong ultimate divisions to cleft much less than half 

 their length and again 2- or 3-toothed, puberulent to hirsute or pilose, some- 

 what grayish; flowers as many as 9, mostly cymose; calyx narrowly to broadly 

 turbinate or campanulate to cup-shaped, reddish-purple to pink or nearly yellow 

 and only reddish-veined; sepals erect to convergent, valvate, 8-12 mm. long; 

 hypanthium almost hemispheric, 4-5 mm. long; bracteoles linear to narrowly 

 elliptic, somewhat spreading, simple to 2- or 3-cleft, shorter to longer than the 

 sepals; petals valvate, erect to convergent, light-yellow to strongly pinkish- or 

 reddish-purple-tinged, elliptic to elliptic-obovate, longer or shorter than calyx 

 bracteoles; achenes pyriform, about 3 mm. long; lower part of purplish straight 

 or tortuous style strongly pubescent and 2.5-5 cm. long, the terminal glabrous 

 segment 3-6 mm. long and often slightly geniculate at the point of juncture with 

 the lower segment and usually tardily deciduous from it. 



In wet mt. meadows, pine forests and open hillsides in N. M. (Taos Co.) and 

 Ariz. (Apache, Navajo, Coconino and Gila cos.), May-Aug.; Nfld. to B. C, s. to 

 N. Y., 111., Neb., N. M., Ariz, and Nev. 



5. Geum rivale L. 



Perennial with short to elongate scaly rootstocks; flowering stems mostly 4-7 

 dm. tall, hirsute below, puberulent above; basal leaves several, somewhat rosulate, 

 to about 3 dm. long, lyrate-pinnatifid; leaflets 7 to 15, once or twice crenate-serrate, 

 1 to 3 of them larger than the others, the terminal one cuneate-obovate and to 

 1 dm. long; cauline leaves 2 to 5, alternate, with leafletlike stipules, the blades 

 pinnatifid below to deeply trilobed above; inflorescence open, mostly 3- to 7- 

 flowered, cymose but alternately branched, the flowers nodding in bud but soon 

 erect; calyx reddish-purple, the erect lanceolate lobes acute to acuminate and 

 about 1 cm. long; hypanthium broadly cup-shaped, shorter than the sepals; petals 

 yellow to pinkish, 2-3 mm. long; stamens 100 or more; achene elliptic in outline, 

 3-4 mm. long, strongly hirsute; styles strongly geniculate, the lower persistent 

 segment 6-8 mm. long, hirsute below, glabrous above and hooked at the tip, the 

 upper sparsely hirsute and soon deciduous segment 3-4 mm. long. 



In swamps, wet meadows, bogs, and in seepage along streams in N. M. (Santa 

 Fe, San Miguel and Taos cos.), May-July; Nfld. and Que. to Alta., s. to Pa., Ind., 

 Mich., Mo. and N. M. 



6. Geum Rossii (R.Br.) Ser. in DC. var. turbinatum (Rydb.) C. L. Hitchc. 



Perrenial with thick scaly rootstocks, forming dense clumps to 3 dm. across; 

 flowering stems simple, mostly 8-20 cm. tall, sparsely pubescent to villous; 

 basal leaves many, noticeably marcescent, oblong in outline, mostly 4-10 cm. 

 long, interruptedly pinnate or pinnatifid into usually 15 to 25 main segments; leaf 

 segments varying from entire and linear to elliptic or broadly cuneiform and 3- 

 to 7-toothed or -cleft, from nearly glabrous and greenish to silvery-sericeous or 



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