230 54. BORAGINACE^. 



10. Mertensia Roth. 



1. M. maritima (Don); st. procumbent branched, 1. ovate 

 acute rough with callous dots glabrous fleshy glaucous, nuts 

 smooth. — Lithospermum Sm., E. B. 361. Stenhammaria Fr. — 

 Fl. in racemes, purphsh-blue. Protuberances in throat of cor. 

 yellow. L. tasting like Oysters. Nuts free, forming a pyramid, 

 exceeding the calyx. Pericarp membranous ; seed smaller than 

 the cavity. — Northern sea-shores. P. V. — VIII. 



11. Lithospermum Zwm. Gromwell. 



1. L. officinale (L.); St. erect much branched, 1. lanceolate 

 acute veined hispid with bulbous adpressed bristles above hairy 

 beneath, throat of the cor. with a crown of scales, nuts smooth. 

 — E. B. 134. — Fl. greenish-yellow. Nuts gray, highly polished, 

 stony, 2 or 3 ripening in each calyx. Root whitish. — Dry and 

 stony places, especially on limestone. P. VI. — ^VIII. Gromwell. 



2. L. purpureo-caruleum (L.); barren st. prostrate creeping, 

 the others erect 2 — 3-fid above, 1. lanceolate acute hispid, hairs 

 on the upper side adpressed bulbous, cor. much exceeding the 

 calyx, nuts smooth. — E. B. 117. — Fl. large, bright blue. Nuts 

 " silvery- white, highly polished, slightly rugged," rarely pro- 

 duced. This species and the following have no scales in the 

 throat of the cor., but merely 6 longitudinal downy folds, and 

 belong to the genus Rhytispermum Link, Spenn. — Thickets on 

 a limestone soil, rare. P. V. — VII. E. 



3. L. arvense (L.) ; st. erect branched, 1. lanceolate rather 

 acute hispid with adpressed bulbous hairs on both sides, cor. 

 rather exceeding the calyx, nuts tubercular. — E. B. 123. — Fl. 

 small, white. Nuts pale brown, polished, ivrinkled, pitted, 3 or 

 4 perfected in each calyx. Root bright red, colouring paper. — 

 Corn-fields. A. V. — VII. Corn Gromwell. 



12. Myosotis Linn. Scorpion-grass, 

 i. Persistentes Cal. of fruit shorter than its stalk. 



1. M. palustris (With.) ; fr.-cal. open with straight adpressed 

 bristles, teeth short triangular, cor.-limb flat longer than the 

 tube, lobes slightly emarginate, style about equalling cal., pubes- 

 cence of St. spreading. — E. B. 1973. St. 42. 2. — L. bluntish, api- 

 culate. St. angular owing to the prominent decm-rent lines from 

 the margins of the leaves. Clusters quite leafless. Cor. large, 

 bright blue with a yellow eye. Cal. divided about i down. — 

 ^. M. strigulosa (R.) ; slenderer, more erect, pubescence of st. 

 adpressed, 1. less blunt, cal.-teeth rather longer. St. 42. 3. Base 



