ROSACE^E 201 



GBNUSXI.—DRYAS. Linn. 



Calyx flattish or slightly concave at the base, 8- to 10-partite. 

 Segments nearly equal and in a single row. Petals 8 or 9, more 

 rarely fewer, oval or oblong, entire. Stamens numerous. Recep- 

 tacle flattish or concave, dry. Achenes dry, terminated by the 

 elongated very plumose styles, which are neither jointed nor bent. 



Undershrul)s with decumbent branches, and simple ovate-oblong 

 or elliptical crenate or entire leaves, white beneath. Flowers 

 large, solitary, white or yellow. Styles with white hairs. 



The name of this genus of plants was given to it by Linniieus, from the dryads or 

 nymphs of the oak, in consequence of the leaves bearing some resemblance to those of 

 the oak. 



SPECIES I.— DRYAS OCTOPETALA. Linn. 

 Plate CCCCLX. 



Leaves oblong-ovate, truncate at the base, crenate-lobed, 

 hoary white beneath, with the mid-rib prominent and not white. 

 Sepals strapshaped or oblong. Petals white. 



Var. a, gemdna. 

 Sepals strapshaped, sub-acute. 



Var. (3, depressa. 



D. depressa, Bab. Ann. Nat. Hist. Ser. 1, Vol. X. p. 183. 



Sepals oblong, blunt and rounded at the apex. 



On rocks and stony debris on mountains, particularly partial to 

 limestone. Var. a in Wales, the North of England, and Scotland, 

 extending to Hoy Hill, in Orkney; and in Clare, Galway, and 

 the North of Ireland. Var. 3 on Ben Bulben, county Sligo. 



England, Scotland, Ireland. Shrub. Summer. 



A small prostrate much-branched shrub, with dark-brown bark 

 peeling off from the old branches. Loaves stalked; lamina i to 1 

 inch long, abrupt and occasionally sub-cordate at the base, blunt at 

 tlie apex, with 5 to 8 large blunt teeth or small lobes on each side, 

 extreme margins reflexed ; midrib more or less pilose, and fre- 

 quently clothed with small fringed scales. Stipules scaiious, 

 adnate for two-thirds of their length, the free jjortiou lauceohitc, 

 ciliated with woolly hairs. Peduncles terminal, 1 to 3 inches high 

 in flower, in fruit lengthening to 2 to 5 inches. Flowers 1 to 1^ 

 inch in diameter, white. Calyx-segments generally 8, reddish, 



VOL. III. 2 D 



