MOEHRINGIA. HOLOSTEUM. 
51 
mass close to the ground. L. very numerous, linear-subulate, 
fiuely ciliated. — Summits of mountains. P. VI. — VIII. S. 
II. Moeuringia Linn. 
1. it/, trinervia (Clairv.) ; 1. ovate iicute stalked 3 — 5-nerved 
the upj)er ones sessile, jiet. shorter than the calyx, sep. Lanceolate 
acute 3-ribbed the intermediate rib strongest and rough. — R. 
4943. Arenaria Sm., E. B. 1483. — St. about a foot high, weak, 
branched, downy. FI. solitary from the forks of the stem and 
axils of the upj)er leaves. Ped. ultimately spreading and curved 
just below the fruit. Lateral nerves of the sep. often obsolete. 
Distinguished from Arenaria and Alsine by the appendage to the 
hilum of its seeds. — Damp shady plaees. A. V. VI. 
12. Arenaria 
1. A. serpyllifoUa (L.) ; 1. ovate acute subscabrous sessile, 
shorter than the calyx, sep. lanceolate acute 3-ribbed hairy. — 
E. B. 923. R. 4941. — St. prostrate or ascending dichotomous. 
FI. from the forks of the stem or the axils of the upper leaves. 
Pet. narrowly ovate, narrowed below. Clothed all over with 
minute hairs which are sometimes glandular. According to 
Hooker (Br. FI. 53.) Wilson finds a plant at Bangor with 5 stam., 
the pet. only i as long as the cal. and the sep. with ])rominent 
ribs. — tenuior (Koch) ; stems much more slender, tl. and fr. 
of half the size. — Dry places and walls. A. VI. — VIII. 
2. A. ciliata (L.) ; 1. spathulate ciliated, pet. longer than the 
calyx, sep. ovate-lanceolate with 3 prominent ribs. — E. B. 1745. 
R. 4942. — St. much branched, ascending, rough. FI. 1 — 5, ter- 
minal, somewhat panicled. Pet. ovate, slightly clawed. Distin- 
guished from A. multicaulis by its keeled sepals. In the foreign 
plant the leaves are usually ciliated only near the base. — On lime- 
stone cliffs on Ben Bulben, &c., Sligo. P. VI. VII. I. 
3. A. norvegica (Gunn.) ; 1. spathulate obovate fleshy not cili- 
ated, pet. longer than the calyx, sep. ovate acute obscurely 3-rib- 
bed glabrous. — E. B. S. 2852. — St. much branched, procumbent, 
nearly smooth. FI. 1 — 3, terminal. Pet. ovate, slightly clawed. 
Seed dark broi™, tuberculated. Distinguished from A. ciliata 
by its fleshy not ciliated 1. which are less narrowed below, and 
the shorter point and obscure ribs of its sepals; in A. multicaulis 
the point of the sep. is longer than that of A. ciliata. — On Ser- 
pentine Hill, Unst, Shetland. P. VII. VIII. S. 
13. Holosteum Linn. 
1. H. umbellatum (L.) ; fl. umbellate, peduncles pubescent 
viscid, pedicels reflexed after flowering, 1. elliptical or elongate 
D 2 
