310 DECANDRIA— TRIGYNIA. Arenaria. 



In the Highlands of Scotland. 



Near the summit of Ben Lawers. Mr. J. Mackmj. On Craig 

 Challeoch. Dr. Greville. 



Perennial. Jime. 



Very nearly allied to A. verna, to which, as a dwarf alpine variety, 

 I had referred the specimens sent by the late Mr. J. Mackay, in 

 1 796. Dr. Greville however, who, with a pupil of Dr. Hooker's, 

 of whose name I am not informed, gathered the same on Craig 

 Challeoch in June 1 824, at once recognized it, as Wahlenberg's 

 Alsine rubella. The petals are said to be reddish, of which no 

 traces remain in my dried ones. The plant forms dense tufts, 

 each'with a long central root. Stems very numerous, ascending, 

 two or three inches high, leafy, downy at the summit, each 

 bearing a solitary^ower, which is the chief difference I can find 

 between this and the verna, the structure of their flowers being 

 the same. The leaves of rubella are perhaps rather shorter and 

 blunter. I have never seen a living specimen. 



7. h.fastigiata. Level-topped Sandwort. 



Leaves awl-shaped. Stem erect, straight, densely corym- 

 bose. Petals very short. Lateral ribs of the calyx di- 

 lated. 



A. fastigiata. Engl.Bot.v.lh.t.MW. Comp.70. Hook. Scot.]3S. 



A. fasciculata. Jacq. Austr. v. 2. 49. 1. 1 82. Don H. Brit. 136. 



Alsine n. 870. Hall. Hist. v. 1. 384. 1. 17. f. 2. 



Stellaria rubra. Scop. Cam. v. 1 . 3 1 6. ^ 1 7. 



On the Highland mountains of Scotland. 



On rocks on the mountains of Angusshire and Fifeshire. Mr, G. Don. 



Annual. Ju7ie. 



Root small, tapering and zigzag. Sterns either solitary or nume- 

 rous, 4 or 5 inches high, alternately branched, leafy, round, 

 nearly smooth, often purplish. Leaves very slender, smooth, 

 erect, permanent ; dilated, combined, and 3-ribbed at the base. 

 Fl. in forked, level-topped, crowded panicles. Cahjx-leaves all 

 neariy equal, smooth, taper-pointed, remarkable for the great 

 breadth of their ivory-like lateral ribs. Pet. much shorter than 

 the calyx, white, obtuse. Stam. 10, rather longer than the 

 petals. Caps, oblong, of 3 valves. Seeds compressed, beautifully 

 toothed like a wheel, each on a long slender stalk. 



The true A. fasciculata is very different in several respects, espe- 

 cially in the long unequal leaves of the calyx, whose lateral ribs 

 are not dilated. 



8. A. ciliata. Fringed Sandwort. 



Leaves spatulate, roughish; fringed at the base. Stems 

 numerous, branched, procumbent, downy. Flowers ter- 

 minal, solitary. Calyx-leaves with five or seven ribs. 



