THE FLORA. 85 



judged from one of its names, "the hyacinth of the 



marshes." Distinguished at once by the white beards 



upon the purple-tinged white petals. 

 Marsh Violet ( Viola palustris). 

 Wild Celery (Apium graveolens}. 

 Angelica (Angelica sylvestris). 

 Slender Water Dropwort (CEnanthe fistulosa). A very singular 



and elegant plant, composed in every part of slender 



green tubes. 



Common Water Dropwort ((Enanthe crocata). 

 Common Marshwort (Sium nodifloruni). 

 Fine-leaved Marshwort (Sium angustifolium). 

 Common Water-Plantain (Alisma Plantago}. 

 Small Water-Plantain (Alisma ranunculoides). 

 Amphibious Persicaria (Polygonum amphibiuni). 

 Flowering-rush (Butomus umbellatus). 

 Ragged Robin (Lychnis Flos-cuculi). 

 Purple Lythrum (Lythmim Salicaria). 

 Meadow-sweet (Spircea Ulmarid}. 

 Water Septfoil (Comarum palustre). 

 White Water-lily (Nymphcea alba}. 

 Yellow Water-lily (Nuphar lutea). 

 Water Snowcups (Ranunculus aquatilis). 

 Marsh-marigold (Caltha palustris}. 

 Common Water-mint (Mentha hirsuta). Occurs also among 



the sandhills. 



Water-cress (Nasturtium officinale). 

 Bur-marigold (Bidens cernua). 

 Butterbur (Petasites vulgaris). 

 Reed-mace (Typha latifolid). 



