242 TETRANDRIA— TETRAGYNIA. Tiltea. 



Stems several, erect, 3 or 4 inches high, round, leafy. Leaves 

 opposite, sessile, linear-lanceolate, entire, single-ribbed. Flowers 

 erect, solitary, onlong terminal stalks, conspicuous for the shining 

 white of their petals and the edges of their calyx-leaves. Caps. 

 of a light shining brown. 

 An elegant little plant, certainly misplaced in Sagina, as its habit 

 and "the structure of the capsule evince. The uncertainty of 

 its genus is hinted, in Fl. Brit, and Engl. But. ,• though I had not 

 then seen Ehrhart's work, to consider his characters. The ori- 

 ginal specific name erecta ought not to be changed. We maybe 

 thankful to get rid of Quateniella. 



85. TILL^EA. Tillsea. 



Linn. Gen. 68. Juss. 307. Mich. Gen. t. 20. Fl. Br. 201. Lam. 

 t.90. Gcertn.t. 112, 



Nat. Ord. Succulents. Linn. 13. Sempervivtz. Juss. 83. 



Cal. in 3 or 4 deep, spreading, large, ovate, succulent seg- 

 ments, inferior. Pet. 3 or 4, ovate or lanceolate, acute, 

 flat, thin, rather smaller than the calyx, and alternate 

 with its divisions. Nect. none. Filam. 3 or 4, simple, 

 awl-shaped, shorter than the corolla, erect. Anth. roundish, 

 of 2 cells. Gcrmens 3 or 4, ovate, superior. Styles ter- 

 minal, very short. Stig??ias obtuse. Caps. 3 or 4, oblong, 

 pointed, recurved, bursting lengthwise at their upper edge, 

 each of 1 cell, and 2 valves. Seeds ovate, 2 in each cap- 



's 

 sule. 



Small, succulent, annual herbs, with numerous branches, op- 

 posite sessile leaves, and generally axillaryTfowcr^ This 

 genus differs from Crassula in the want of nectariferous 

 scales, as well as in number of the several parts. 



1. T. muscosa. Mossy Tillaea. 



Stems procumbent. Flowers sessile, mostly three-cleft. 



T. muscosa. Linn. Sp. PL 186. Willd. v. 1 . 72 1 . FL Br. 201. 



Engl. Bot. v. 2. t. 116. Rose's Elem. append. 448. t. 2. J. 2. 

 T. muscosa annua perfoliata, flore albo. Mich. Gen. 22. t. 20. 

 Sempervivum omnium minimum, repens, muscosum, polygoni 



facie. Bocc. Mus. v. 2. 36. t. 22. 

 Polygonum muscosum minimum. Bocc. Sic. 56. t. 29. 

 Crassula foliis sessilibus connatis, floribus aggregatis in foliorum 



alis. Guett. Obs. v. 2. 97. 

 On the most barren sandy heaths. 

 Frequent in Norfolk and' Suffolk. A troublesome weed on the 



gravel walks at Holkham. 

 Annual. May, June. 



