toerbaceons Plants. 299 



the grass on barren slopes and hillsides. O. tomentosum 



has white, woolly foliage forming dense tufts or mats. 

 C. Blebersteini is a plant of a similar habit, but larger in 

 all its parts, much used in carpet-bedding and for edging 

 beds and borders. 



Sandwort, Arenaria. — Chiefly rock-plants, or plants of 

 sandy fields and seashores. Fine in rockeries, and may also 

 be used to cover barren and sandy soil where grass is not 

 likelv to grow. The grass-leaved sandwort (A. gramini- 

 folia) has white flowers in loose panicles six inches high. 

 Larch leaved sandwort (A. laricifolid) is another pretty 

 species. Other neat forms are montana and Balearica, the 

 latter, growing only on moist rocks, a very pretty plant. 

 The northern sandwort (A. Grcenlandica) is common in 

 high mountain regions; it is a closely tufted plant, with 

 white flowers, fine for rockeries, 



THE PURSLANE FAMILY. 



Showy Purslane, Portidaeca grandiflora. — A well- 

 kuown, prostrate, annual herb with fleshy leaves and 

 showy flowers, white, yellow, rosy-purple, scarlet, and 

 crimson. May be sown in autumn or early in spring in 

 sandy places. Also fine for beds in poor soil. 



Spring Beauty, Claytonia Virginica. — One of our show- 

 iest spring flowers, common in rich woods and moist wood- 

 laud meadows. Flowers white or pale-rose, with deeper 

 veins : leaves linear-lanceolate. Fine for naturalizing in 

 lame masses in shrubberies and moist lawns. 



