WILD FLOWERS OF NEW YORK 1 09 



In dry woods and thickets, Vermont and Ontario to North Dakota, 

 south to Georgia and Arkansas. Flowering from March to May. 



Stiff White Water Crowfoot 

 Batrachium circinatum (Sibthorp) Reichenbach 



Plate 7Q 1 



Plant entirely submerged, except the flowers. Stems branching, 

 usually 1 foot long or longer. Leaves about 1 inch long, spreading nearly 

 at right angles from the stem, only slightly or not at all collapsing when 

 drawn from the water, repeatedly forked into capillary divisions. Flowers 

 white, one-third of an inch broad on stout peduncles, 1 to 2 inches long 

 opposite the leaves, flowering just above the surface of the water; sepals and 

 petals five; petals oblong-oval and blunt. Fruit a small cluster of tiny, 

 apiculate achenes. 



In ponds and slow streams, Nova Scotia to British Columbia, south 

 to North Carolina, also in Europe and Asia. Flowering from June to 

 September. 



The form illustrated here has the beak of the achenes about 1 mm long, 

 so that it should be classed as Batrachium longirostre (Godron) 

 F. Schultz. 



Early Meadow Rue 



Thalictrum dioicum Linnaeus 



Plate 71 



Stems glabrous, erect, 1 to 2 feet high, slender and leafy from brown 

 perennial roots. Leaves three to four-ternate. Leaflets thin, pale beneath, 

 orbicular or broader, often cordate and the terminal one somewhat cuneate 

 five to nine-lobed. Flowers dioecious, greenish or greenish yellow, drooping 

 or spreading; panicle elongated, of numerous lateral corymbs or umbels; 

 sepals usually four, blunt ; petals none ; stamens numerous, filaments longer 

 than the sepals; anthers linear, blunt, longer than the filaments. Achenes 

 in fruit ovoid, sessile or minutely stipitate, strongly ribbed, much longer 

 than the stvle. 



