382 POT.YANDRIA POLYGYNIA. 



POLYGYN1A. 

 250. LIRIODENDRON. Tulip-tree. 



L. tulipifera. 



HAB. Woods. July. A large tree ; leaves 4-lobed, truncate ft. 

 large, sol., yel.-gr. 



251. CLEMATIS. Virgin's-bower. 



C. Virginian a : climbing; leaves ternate ; leaflets ovate, subeordate, 

 incisely toothed and lobed, acute ; flowers paniculate, dioecious. 



HAB. Shady thickets. July Aug. 1? ; stem long ; fl. white, in 

 large dichot. pan. 



t Calyx 4-leaved ; petals numerous, minute. ATRAGENE. 



C. rerticillaris : leaves verticillate in fours, ternate ; leaflets cordate, 

 nearly entire ; peduncles 1 -flowered ; petals acute. 



HAB. Mountains. May June, T? ; climbing ; flowers very large t 

 purp. 



252. ANEMONE. Wind-flower. 



A. nemorosa : b. quinquefolia : leaves ternate ; segments 5-parted, in- 

 cisely dentate, lanceolate, acute ; involucrum similar, petiolate ; stem 

 1 -flowered ; calyx 6-leaved ; capsules awnless. 



HAB. Woods. April May, '2J-; root black, tub.; stem 6 inches 

 high ; flowers white or purplish. 



A. virginiana : leaves ternate ; segments 3-clefl, acuminate, incisely 

 toothed ; involucrum similar, petiolate ; leaflets of the calyx acumi- 

 nate ; fruit oblong. 



HAB. Woods. July, Tj. ; stem 2 feet high ; flower gr. yd. ; caZ. 

 hairy ; caps, woolly. 



253. THALICTRUM. Meadow-rue. 



* Stamens longer than the calyx. 



T. dioicum : very smooth; leaves decompound; leaflets roundish, 

 with obtuse lobes, glaucous beneath ; filaments filiform ; flowers dioe- 

 cious. 



HAB. Rocky woods. April, 7J.; stem 2 feet high ; flowers panic., 

 rose-col. ; ~fr. oral, striate. 



T. pubescens : leaves decompound ; leaflets ovate, 3-lobed, minutely 

 and densely pubescent beneath ; margin revolute ; filaments filiform ; 

 flowers polygamous. 



HAB. Wet meadows. June July, 01; stem 4- -5 feet high ; fl. M 

 large pan. ; cal. decid. 



