420 ROSACEA. Geum. 



plumose terminal styles : stigmas simple. Seed ascending. Radicle in- 

 ferior. — Depressed suflfrutescent plants, with simple leaves and large (white 

 or, yellow) flowers. Stipules adnate to the petiole. Peduncles tenninal, 

 1 -flowered. 



fl. D. octopetala (Linn.) : leaves oblong-ovate, coarsely crenate-toothed, 

 obtuse at each end, clothed witli a white tomentum beneath, tlie veins pro- 

 minent ; sepals linear ; flowers white. — Linn.! sjJec. 1. ^j. 501; Engl. hot. 

 t. 31 ; Pursh, fl. 1. p. 350 ; DC. ! prodr. 2. p. 550 ; Torr.! in ann. lye. 

 New York, 2. p. 195 ; Hook. ! Jl. Bor.-Am. 1. p. 174. 



Arctic America, and from Greenland ! and Labrador! to Behring's Straits! 

 and along the Rocky Mountains (lat. 52°-56°, Drummond !) to lat. 41°, 

 Dr. .James ! — Pubescence of the calyx and pedunde mixed with dark 

 glands. 



•^2. JD. integrifolia (Vahl) : leaves oblong-ovate, broader and subcordate at 

 the base, the margin revolute, entire or very slightly toothed towards the 

 base, clothed with a white tomentum beneath ; the veins inconspicuous ; 

 sepals linear ; floAvers white. — Vahl! in act. Hafn. 4. p. Ill, ^' fl. Dan. t. 

 1216; Hook, e.rot. fl. t. 220 ; DC! I. c; Hook.! fl. Bor.-Am. 1. p. 174. 

 D. tenella, Pursh! I. c. D. octopetala, var., Cham. i>f Scjilccht. ! in Lin- 

 ncea, 2. p. 3. 



Arctic America, from Greenland ! and Labrador ! to Kotzebue's Sound ! 

 White Mountains of New Hampshire, Prof. Peck, fide Pursh. Island of 

 Anticosti, Pursh ! — Chamisso & Schleclitendal view this plant as a more 

 arctic form of the preceding ; but Hooker considers it perfectly distinct. 



7 3. D. Dritmmondii (Hook.) : leaves elliptical, slightly attenuate at the 

 base, crenate-serrate, clothed beneath, as well as the prominent veins, with 

 a white tomentum; sepals ovate; flowers yellow. — Hook.! hot. mag. t. 

 2972, cy fl.. Bor.-Am. I. c. D. octopetala, Richards. ! appx. Frankl. journ. 

 ed. 2. p. 21. 



In the woody country from lat. 54° to 64°, and about Slave Lake to the 

 Arctic Sea in lat. 68°, Richardson ! Rocky Mountains, Drummond ! Island 

 of Anticosti, Pursh ! (in herh. Lamb.) 



8. GEUM. Linn. ; Lam. ill. t. 443 ; DC. p)rodr. 2. p. 550. 



Geum & Sieversia, JR. Br. 



Calyx rather flat or obconic at the base, deeply 5-cleft, usually with 5 

 exterior alternate segments or bracteoles. Petals 5, obtuse or emarginate. 

 Stamens numerous, inserted into the disk which lines the base of the calyx 

 in nearly a single or in several rows : filaments somewhat persistent. 

 Achenia numerous, aggregated on the conical or cylindrical dry (glabrous or 

 hairy) receptacle, caudate with terminal persistent styles : stigmas simple or 

 retuse. Seed erect. Radicle inferior. — Perennial herbs, Avith variously 

 pinnately divided leaves. Flowers white, yellow, or purplish. 



§ 1. Flowers erect {mostly small) : segments of the calyx reflexed: head of 

 carpels sessile : styles articulated and geniculate above the middle ; the 

 lower portion glabrous, persistent, uncinate at the apex after the deflexed 

 and mostly hairy tenninal portion falls away.—l^vGKvyi. (Carj^ophyl- 

 1 a strum & Calligeum, Fisch. <y Meyer. 



