ALSINACEAE 305 



i. Alsine [Tourn.] L. 



Styles 5; leaves ovate, 2-5 cm. long. 

 Styles 3, rarely 4. 



Leaves broad, ovate, ovate-oblong or oblong. 



Plant glabrous or with a few scattered hairs. 

 Stems with 1-2 pubescent lines, petioles often ciliate. 

 Petals shorter than the calyx; lower leaves petioled. 

 Petals longer than the calyx; lower leaves rarely petioled. 

 Leaves narrow, linear, oblong, oblanceolate or spatulate. 

 Flowers 14-20 mm. broad. 

 Flowers only 4-12 mm. broad. 



Bracts of the cyme small, scarious. 



Leaves linear, acute at each end; seeds smooth. 



Leaves lanceolate, broadest below; seeds rough. 



Bracts of the cyme foliaceous, resembling the upper 



leaves; seeds smooth. 8. .4. boreal n. 



i. A. aquatica (L.) Britton. In wet and waste places: Ont. to 

 Pa. Also in Br. Col. Adventive from Europe. 



A rare and local weed, known definitely only near Philadelphia 

 and New York. 



2. A. uliginosa (Murr.) Britton. In cool brooks and springs: 



Md. and Penn. to Newf. Also in Br. Col. and the N. W. 



Terr. Europe and Asia. 



N. Y. Orange, Sullivan, and Delaware counties, within the drain- 

 age of the Delaware River and at Queens, L. I. 



N. J. Burlington, Mercer, Hunterdon, Morris, Warren and Sussex 

 counties all within the drainage of the Delaware River. 



Pa. Throughout the counties bordering the Delaware, and also in 

 Luzerne county. 



3. A. media L. In waste places: common throughout North 



America. Naturalized from Europe. 

 Common as a weed almost everywhere. 



4. A. pubera (Michx.) Britton. In waste rocky places: N. J. and 



Pa. to Ind., Ky., Ga. and Ala. 



N. J. Reported from Mercer Co. not recently collected. 



Pa. Bucks, Montgomery, Philadelphia, Delaware and Chester 



counties. 



Tertiary, o: Cretaceous, rare in Bucks Co., Pa. Older Forma- 

 tions, not very common. Not north of the moraine. 176-224 

 days. About sea-level. 



5. A. Holostea (L.) Britton. L. I., N. Y., and Poland, Me. 



Fugitive or adventive from Europe. Native also of Asia. 

 N. Y. Western L. I. 



