It differs chiefly in the longer corolla-tube, longer style 

 and larger flowers. Indeed D. nivalis was first published 

 as an Androsace by Graham in the Edinburgh Philoso- 

 phicalJournal (July, 1829), a circumstance overlooked by 

 Lindley, -who might otherwise have hesitated to found a 

 new genus upon it ; this he did chiefly on the few-seeded 

 capsule, a character now known to occur in Androsace. 

 That the length of the corolla tube is a futile differential 

 character is shown by one of the species, D. montana, A. 

 Gray, having the tube barely equalling the calyx. D. 

 laevigata is a native of the Rocky Mountains in Oregon, 

 and the specimen figured which flowered in the Royal 

 Garden in November of last year and again early in the 

 present year. The seeds were received from Dr. Gray in 

 1886, and the plant flowered early in the present year. 

 It is perfectly hardy. 



Descr. A small densely tufted herb, glabrous, or with 

 a very few scattered deciduous forked hairs. Leaves 

 rosulate, bright green, one-half to three-quarters of an 

 inch long, oblong or linear-lanceolate, acute or subacute, 

 coriaceous, spreading. Peduncle about an inch long, stout 

 erect. Involucral bracts four to six and a quarter of an 

 inch long broadly ovate obtuse, bearing two or five- 

 pedicelled flowers, and some reduced leaves and buds at 

 the base of the pedicels, which are half an inch long. 

 Calyx campanulate; lobes ovate, subacute, puberulous. 

 Corolla tube about twice as long as the calyx terete not 

 swollen ; limb rose-pink, one-third of an inch in diameter ; 

 lobes very broadly obovate ; oral glands triangular. Sta- 

 mens small, inserted below the mouth. Ovary globose ; 

 style slender, stigma capitellate ; ovules many. — J.D. H. 



Ficr. 1, flower ; 2, calyx ; 3, corolla laid open ; 4, ovary ; 5, placenta and ovules ; 

 6, ovule : — all enlarged. 



