49 



Salix fragilis L . Found along roadsides, usually solitary and 



rare. 

 These two species are practically the only ones that represent 

 Salix in this region. 

 Alnus incana (L.) Willd. Forming more or less extensive 



thickets along watercourses and in low swampy ground that 



has passed from the pond into the swamp condition. It 



flowers in May and fruits in August. 

 Fagus grandifolia Ehrh. In more or less extensive formations 



on first and second (more recent) terraces in bottom of 



most drainage areas in the region. Associated with pine 



and thus constituting a mixed formation (pine-beech or 



beech-pine, as the case may be). It flowers in April and 



May, fruits in September and October. 

 Ulmus americana L. In moist soil, especially along streams. 



Flowers in March and April, fruits in May. 

 Urticastrum divaricatum (L.) Kuntze. In moist and wooded 



banks of Amster brook and its tributaries, rare. Flowering 



in July, fruiting in August and September. 

 Polygonum arifolium L. In ponds in pine woods, occurring in 



groups. July. 

 Claytonia caroliniana Michx. In meadows and pine barrens, 



in small colonies. One of the first plants to appear, after 



the snow is gone. End of April. 

 Cerastium longipedunculatum Muhl. Very common in open 



slopes and bottom of gulfs. July. 

 Caltha palustris L. In colonies in swampy pastures, along ditches 



and natural watercourses. June and July. 

 Aquilegia canadensis L. Rare. In small groups in alluvial 



bottom of Amster Brook. Flowering in May and June, 



fruiting in July and August. 

 Actaea alba (L.) Mill. In rich wooded slopes of Amster Brook 



and other streams, rare. Flowering in June, fruiting in 



August. 

 Clematis trifolia Salisb. In small groups in pine-barrens and 



damp wooded slopes, belonging to the plateau-valley and 



gulf formation. May. 



