DICOTYLEDONOUS PLANTS. 



** ,.^^ 



itary, either erect or pendulous. Embryo minute. Albumen 

 corneous, large. 



Herbs or Undershrubs. Leaves simple, often variously 

 lobed, with petioles, more or less dilated at their base. 



1. CLEMATIS. Linn. 



Involucre none, or like a calyx under the flower. Sepals 

 4 8, coloured. Petals none, or shorter than the sepals, 

 Carptls many, terminated by a long, mostly feathery awn. 



Polyandria. Polygynia. 



1. C. virginiana Linn. : stem climbing ; leaves ternate ; leafets cordate- 

 ovate, acute, coarsely toothed or lobed ; flowers paniculate, dioecious. 



HAB. Can. to Flor. N. to lat. 55 W. to Columbia river. Aug. 

 f?. >S'tew long. Flowers white, in large panicles. Tails of the" 

 carpels at length clothed with long silken hairs, having the ap- 

 pearance of tufls of wooL Virgins Bower. 



2. 0. viorna Linn. : stem climbing ; leaves pinnately divided ; seg- 

 ments entire, or 3-lobed, ovate, acute ; floral ones entire ; peduncles 

 I -flowered ; sepals thick, acuminate, connivent, reflexed at the apex. 



HAB. Woods. Penn, to Geor. W. to Miss. June, July. If. Fto<r- 

 ers large, nodding, violet. Tails of the carpels long, plumose. 



3. C. ochroleuca Ait. : herbaceous, erect, simple, pubescent ; leaves 

 simple, ovate, very entire, the younger ones with the calyx silky ; flow- 

 er peduncled, terminal, solitary, nodding. C. sericea Mich. 



HAB. Woods. Penn. to Geor. June. If. Stem 1218 inches 

 high. Flowers yellowish- white. Carpels conspicuously feathered. 



Sepals 4 ; petals many, minute. ATRAGKNE. 



4. C. vcrticittaris De Cand. : leaves whorled in fours, ternate r leaf- 

 M.s ;>ctioled, cordate, nearly entire ; peduncles 1-flowered ; petals acute. 

 Atragene americana. Sims. Pursh. 



HAB. Rocks. N. Y. Penn. N. to lat. 54. June. T?.8tcm 

 climbing. Flatccrs very large, purple. 



2. THALICTRUM. Linn. 



Involucre under the flower none. Petals none. Carpels 

 dry, not awned, sometimes stipitate, sometimes with a longi- 

 tudinal furrow. Polyandria. Polygynia. 



* Stamens longer than the Calyx. 



1. T. cornuti Hook. : leaves decompound ; leafets roundish-obovate 

 or oblong, 3-lobed, glaucous beneath, with the nerves scarcely promi- 

 nent ; flowers mostly dioecious ; filaments sub-clavate ; anthers ellip- 

 tic or sub-linear ; stigmas filiform, membranaceous on the margin ; 

 carpels ovate-oblong. T. cornuti and T.pubesccns Pursh. T. rcroiutum 

 Ell. 



