ROSACE5E. 



101 



1. G. strictum Ait.: hairy; leave*? *ll - 



terminal leafet larger; leafets ovate, dentate ; stipules ovate, incised ; 

 calyx with 5 alternate segments, linear and short ; flowers erect ; per 

 tals roundish, a little longer than the segments ; awns naked, uncinate. 

 r-G. canadense Murr. 



HAB, Swamps. Can. and N. S. Aug. 21. Stem 2 feet high. 

 Floicers large, yellow. Yellow Avens. 



2. G. mrginianum Linn. : pubescent ; radical lower stem leaves ter^ 

 nate ; the upper lanceolate ; stipules ovate, nearly entire ; flowers 

 erect ; petals shorter than the calyx ; awns uncinate, naked, hairy and 

 twisted at the summit. 



HAB. Shady woods. Can. to Car. W. to Miss. June, July. 

 If. Stem 2 feet high, erect. Lower leaves large, sometimes 

 quinate. Floicers yellowish-white, on long peduncles. 



Virginian Avens. 



3. G. album IVittd. : pubescent ; radical leaves pinnate ; stem leaves 

 ternate ; the upper one simple, 3-eleft ; lower stipules incised ; flow- 

 ers erect ; petals as long as the calyx ; awns uncinate, naked, hairy at 

 the summit. G. canadense Jacq. 



HAB. Banks of streams. Can. to Car. June, July. 11. Stem 

 2 feet high. Flowers white, on short peduncles. De Candolle 

 thinks it may be a variety of the former. White Avens. 



4. G. rivale Linn. : pubescent ; stem simple, 1 4 flowered ; radical 

 leaves interruptedly pinnate ; lobes obovate, doubly-serrate ; stem 

 leaves 3-lobed ; lobes acute ; flowers nodding ; petals as long as the 

 calyx ; awns plumose, nearly naked at the summit, minutely uncinate. 



HAB. Moist places. Can. and N. S. May, June. If. Stem 

 18 inches high. Flowers large, terminal, several on each branch, 

 dark purple. Water Avens. 



5. G. peckii Pursh. : somewhat hairy ; stem few-flowered ; radical 

 leaves reniform, incisely toothed and somewhat lobed ; petioles elon- 

 gated, with minute leafets ; petals roundish, longer than the calyx. 



HAB. White hills, N. H. July, Aug. If. Stem 810 inches 

 high. Radical leaves on long petioles. Flowers yellow, middle 

 sized. 



0. G. geniculatum Mich. : stem branched above ; stem leaves sessile, 

 3-parted ; stipules entire ; flowers somewhat panicled ; petals obcor- 

 date-cuneate ; awns hairy, geniculate in the middle. 

 HAB. Canada. Mich. An obscure species. 



5. COMAROPSIS. Rich. 



Calyx with the tube turbinate, the limb 5rdeft, not bracted, 

 Petals 5, without claws. Stamens numerous. Carpels small, 



9* 



