202 ENGLISH BOTANY. 



clothed with dark pui-ple or hhack gland-tipped hairs intermixed 

 ■with white Avoolly ones, which are most abundant on the margins. 

 Petals usually 8 in number, longer than the calyx, oblong-elliptical 

 or oval. Achenes oblong, convex on the outer side, pointed, hispid, 

 terminating in a long tail from 1 to 2 inches long, which is plumose 

 with long white spreading hairs. Leaves rugose, deep-green, 

 shining above, pure white beneath (except on the veins) from a 

 dense felt of white hairs. Petioles and under side of the veins with 

 woolly hairs. Peduncles with white woolly hairs and stouter 

 reddish purple gland-tipped ones, similar to those on the sepals, 

 but less numerous. 



Var. 3 I have not seen. The calyx in the common plant is 

 quite as often flat and truncate as not, so that character is of no 

 importance : Professor Babington now considers it a variety of D. 

 octopitala. 



Mountain Acens. 



French, Dryade d, hull Petals. Gevman, AclUhUiltrige Dryade. 



Tkibe IV.— ROSIDJE. 



Prickly shrulis with regularly pinnate leaves, with a few pairs of 

 pinnae, very rarely none. Calyx-tube urceolate-ovoid or subglobose ; 

 segments sometimes deciduous in fruit. Petals large, generally 

 pink, red, or white, more rarely yellow. Stamens indefinite. Carpels 

 numerous, in several whorls, arranged on the concave disk which 

 lines the tube of the calyx. Styles lateral. Pruit consisting of 

 dry achenes enclosed in the tube of the calyx,* which becomes 

 Ilesliy at maturity and gives it the appearance of an inferior fruit. 



GEN US XII.— 'R O S A. Tournef. 



Calyx with an urceolatc or subglobose tube (the excavated 

 apex of the peduncle ?) contracted at the mouth by a fleshy ring ; 

 segments 5, rarely 4, herbaceous, frequently pinnatifid, persistent 

 or deciduous. Petals as many as the calyx-segments, inserted into 

 the throat of the calyx. Stamens numerous, inserted with the 

 petals. Ovaries included in the calyx-tube ; ovules solitary, pen- 

 dulous ; styles lateral, coming through an aperture in the centre 

 of the disk which closes the mouth of the calyx-tube. Achenes 



* Although the fleshy sac which encloses the carpels is usually called the tube of 

 the calyx, it is quite probable that it really consists of the excavated apex ot the 

 peduncle or thalamus. 



