72 TETRANDRIA — TETRAGYNIA. [Tillcea. 



mens from the south of Europe. Yet the latter author quotes my figures 

 in Flora Lond. as admirably characteristic of his maritima. 



21. Sag IN A. Linn. Pearl- wort. 



1. S. procumbens, L. {procumbent Pearl-wort); perennial, gla- 

 Lrons, stems procumbent, leaves shortly mucronate, petals much 

 shorter than the calyx. E. Bat. t. 880. 



Waste places, and dry pastures, frequent. FL Ma} — Aug. If. — Stems 

 spreading, 2 — 4 inches long, in alpine situations growing amongst Sper- 

 gula subulata, from which it is with difficulty distinguished ; and often 

 sending out roots from diflerenl parts of the stem at the insertion of the 

 leaves, and these throwing u|) new jjlants. Leaves linear-subulate, con- 

 nate, membranous at the margins at the base, tipped with a short pellu- 

 cid point or inucro. Peduncles solitary, axillary and terminal, about an 

 inch long. Flowers at first drooping. 



2. S. apetala, \j. (annual small-Jlowered Pearl-wort) ; annual, 

 stems slighty hairy erect or ascending, leaves aristate fringed, 

 petals much smaller than the calyx. E. Pot. t, 881. 



Dry gravelly places, on walls, &c. frequent and sometimes growing 

 upon the sea-shore with the following species. Fl. May, June, 0. — 

 Slenderer than the last, smaller and annual. Leaves narrower, more 

 bristle-pointed, more glaucous and slightly hairy at the margins, some- 

 times glabrous. Stems also hairy. Petals always present, according to 

 Mr W. Wilson, obcordate, or wedge-shaped and truncated. 



3. S. maritima, Don, (sea Pearl-wort); annual glahrous, stems 

 erect or procumbent only at the base, leaves fleshy obtuse, petals 

 none, calyx rather longer than the capsule. Don's Hort. Sice. 

 Br. n. 155. E. Bot. t. 2195. Hook, in Fl. Lond. N.S. t. Wb.—S. 

 stricta, Fries, and Svensh, Bot. t. 562.^ 2. 



Sea-coast of England, Ireland, and Scotland, not unfrequent. Fl. May, 

 Aug. 0. — A very distinct and well-marked species, with a reddish or 

 purj)lish tinge, especially on the stems and calyces. Quite glabrous. 

 Petals altogether wanting. Cal. blunt, longer than the capsule. Leaves 

 without any apiculus, fleshy, " rounded at the back," ( Wilson). 



22. M(ENCHIA. Ehrh. Moenchia. 



I. M. erecta, Sm. (itpright Blmichia). E. Fl. v. \. p. 241. — M. 

 gJauca, Pers. — Sagina erecta, Linn. — E. Bot. t. 609. 



Pastures, in a gravelly soil. Fl. May. 0. — Stem 2 — -t inches high, 

 erect or frequently a little reclining at the base, glabrous as well as the 

 leaves which are opposite, linear-lanceolate, acute, rigid, glaucous. Cal. 

 leaves large, acuminate, white and membranous at the margin. Pet. 

 lanceolate, entire, as long as the calyx. Capsule as in Cerastium. 



23. TiLL.EA. Linn. Tilleea. 



I. T. muscosa, L. (mossy Tillcea); stems branched and decum- 

 bent at the base, flowers axillary sessile mostly 3-cleft. E. Bot. 

 t. 116. 



On moist barren, sandy heaths, in various parts of England, not found 

 in Scotland. A troublesome weed in gravel walks in some parts of Nor- 

 folk and near London. Fl. May, June. 0. — A minute succulent plant, 

 scarcely 2 inches high, allied to Sedum : with small, reddish, opposite. 



