28 



Shad bushes 



Sheep laurel 



Skullcaps 



Sneezeweed 



Solomon's seal 



Spice bush 



Spikenard* 



Spring beauty* 



Star flower* 



Star grass {Hypoxis) 



Steeple bush 



Sweet Cicely 



Sweet clovers 



Sweet pepperbush 



Tansy 



Thistles 



Thoroughwort 



Tick trefoils 



Toadflaxes 



Toothworts* 

 Turtlehead* 

 Vervains 

 Vetches 

 Viburnums 

 Violets (most kinds) 

 Viper's bugloss 

 Water hemlock 

 Water lilies 

 Water parsnip 

 White clematis* 

 White-flowered bush 



clovers 

 White snakeroot 

 Wild bean {Apios) 

 Wild carrot 

 Wild cherries 

 Wild currants 

 W'ild geranium 



Wild indigo 

 Wild lettuce 

 Wild lily of the valley 

 Wild morning glory 

 Wild mustards 

 Wild parsnip 

 Wild plums* 

 Wild radish 

 Wild roses 

 Wild sarsaparilla 

 Wild sunflowers 

 Winterberries* 

 Witch-hazel 

 Yarrow 



Yellow-flowered cinque- 

 foils 

 Yellow gerardias* 

 Yellow rocket 



THE PERSISTENCE OF SOME OF OUR 

 NATIVE PLANTS* 



George Redles 



Conopholis Americana. — This colony was observed about 1825 

 by the late Wm. Wynne Wister along the Wissahickon and then 

 my father located it, who showed it to me at least fifty years ago, 

 so it has been under observation for at least 100 years. The 

 same directions for finding it still hold good, notwithstanding a 

 sewer and bridle path have been constructed in the immediate 

 vicinity. It seems to be of about the same dimensions as origi- 

 nally noted, even to the same black oak host. Efforts to propa- 

 gate it from seed have so far failed in other locations. 



Aletris jarinosa and Chamaelirium luteum. — These were found 

 growing in what was originally a more or less damp situa- 

 tion, caused by a brook running on a level with the place, but 

 now, owing to erosion, they are left high and dry close to the 

 top of the hill, the brook twenty feet below and the road close 

 to a hundred feet below, which naturally causes the situation to 

 become very dry under ordinary conditions. The Chamaelirium, 

 originally about twenty-five plants, has dwindled to a single 

 * A paper delivered at the meeting of the Phila. Botanic Club, October 22, 1925. 



