TETRADYNAMIA SILICULOSA. 337 



^uatica i. SUB^ULARIA. Sp, pL 896. (Moris, hijl.f 8. t. 

 JO,/. ttUiin. Piuk, aim. /. 188. /. 5. vjalL Oed. 

 Ban. t. -2^^. opt. Pet: herb, t. 48./. 8. bona) 

 Awl-wort. Anglis, 

 * It grows on the borders of the highland lakes, un- 



der the water, in a gravelly or ifandy bottom, as 

 in Loch-Tay^ in Breadalbane, '&:c. Mr. Stuart, 

 o. VIII. 

 This plant is about an inch high : the leaves are 

 awl-(liap'd, and grow in a cluiter about the root: 

 the ftalk is naked, and produces four or five 

 fmall white flowers, growing alternately on fliort 

 peduncles. 

 It is very remarkable, that this diminutive plant 

 flowers under the water-, whereas mofl: other 

 aquatic vegetables emerge from that element at 

 the time of flowering. This power of emergence 

 feems however the lefs necelTary in this plant, as 

 the petals are fcarcely ever feen to expand, but 

 xonnive together, fo as mofl- probably to defend 

 the impregnating Pollen from the injuries of the 

 water. 



DRAB A. Gen. pL 800. 

 Silicula integra, ovali-oblonga. valvis planiufculis, 

 diflfepimento parallelis. Stylus nullus. 

 ^erna i. DRABA fcapis nudis, fol is fubferratis. Luu [yji. 

 nat. 432. Sp.pl. 896. {Ger. cm.p, 624./. i-fo- 

 liis male exprejfis. Pet. herb. t. 48./. 6, 7. melior, 

 Seguier. veron. p. 329. ^. 4. /. 3) 



Z Common 



