CORRIGIOLACEAE 303 



i . Talinum Adans. 

 1. T. teretifolium Pursh. On dry rocks: Pa. to Minn., Ga. and 

 Tex. 



Pa. Known definitely only from Chester and Delaware Counties. 

 Growing in our range most plentifully upon hydromica-schists 

 and azoic slates. Not north of the moraine. 



2. Claytonia [Gron.] L. 



Leaves linear-lanceolate, 8-17 cm. long. I. C. virgmica. 



Leaves ovate-lanceolate or ovate, 5-;; cm. long. 2. C. caroliniana. 



1. C. virgmica L. In moist woods: N. S. to the N. W. Terr., Ga. 



and Texas. 



Throughout the range except in the pine-barrens of N. J., there 

 wanting; on L. I. only north of the moraine. 



2. C. caroliniana Michx. In damp woods: N. S. to the N. \\ . 



Terr., Conn., N. Car., Ohio and Mo. 



Conn. Middlesex, Hartford and Litchfield counties, increasing 



northwestward. 

 N. Y. Summits of the Catskills in Ulster, Delaware and Greene 



counties. 

 Pa. Mountains of Luzerne Co. 



Tertiary, o: Cretaceous, o: Older Formations, increasing north- 

 ward and at higher elevations. Not south of the moraine. 117- 

 164 days. 322-4,020 ft. 



3. Portulaca [Tourn.] L. 



1. P. oleracea L. In fields and waste places, common throughout 

 North America. Native in the southwest, but naturalized 

 northward. 

 A troublesome weed throughout our area. Often locally rare. 



The sun plant, Portulaca grandiflora Hook., and P. pilosa L. are both occasional 

 waifs in the range. 



CORRIGIOLACEAE 



Leaves stipulate; stamens borne on the base of the calyx. 



Sepals awn-tipped. 1. Paronychia. 



Sepals awnless. 2. Anvchia. 



Leaves not stipulate; stamens borne on the throat of the calyx. 3. Scleranthus. 



i. Paronychia Adans. 



1. P. argyrocoma (Michx.) Nutt. In rocky places: Me. and 

 N. H. to Tenn. and Ga. 



