Iberbaceous plants* 299 



the grass on barren slopes and hillsides. C. tomentosum 

 has white, woolly foliage forming dense tufts or mats. 

 C. Biebersteini 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 

 likely to grow. The grass-leaved sand wort (A. gramini- 

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

 Larch-leaved sand wort (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 sand wort (A. G-rcenlandica) is common in 

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

 white flowers, fine for rockeries. 



THE PUBSLANE FAMILY. 



Showy Purslane, Portulacca grandiflora. A well- 

 known, 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- 

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

 veins ; leaves linear-lanceolate. Fine for naturalizing in 

 large masses in shrubberies and moist lawns. 



