112 BRITISH BOTANY. 



M. niccBensis, All. — Stem procumbent or ascending, round, 

 hairy, tubercular, with spreading branches. Pedicels short, 2-4 

 together. Calycule (bracts) ovate-lanceolate. Calyx increasing 

 slightly after flowering (Gr.) . Petals twice as long as the calyx, 

 obovate, and notched. Carpels glabrous or slightly pubescent, 

 not toothed at the margin. 



Battersea and Wandsworth, on rubbish. Annual ; July-Oct. 



M. borealis, Wallm. M. pusilla, Sm. — e.b. 241. l.b.s., ex- 

 cluded species. List B, p. 15. 



Stems prostrate, leafy. Leaves like the same organs in M. 

 rotundifolia. Bracts of the calycule linear, as long as the seg- 

 ments of the calyx. Petals about as long as the calyx. Fruit pu- 

 bescent. Carpels reticulate- rugose. 



About Hythe, Kent. Annual; July-September, 



M. ambigua, Guss. — Stem round, slender, branching, ascend- 

 ing or procumbent, flexuous, covered with short, white, rigid, 

 stellate hairs. Leaves smaller than they are in M. sylvestris, 

 3-5-lobed, the lobes, especially the middle one, are longer and 

 narrower than in the former mentioned species. Flowers few, on 

 slender, hairy pedicels ; lobes of the calyx ovate-acuminate, hairy. 

 Petals scarcely double the size of the calyx-lobes. Fruit smooth, 

 with an elongate central column. 



Wandsworth Steam-boat Pier. Annual ; July-September. 



M. parviflora, Lin. — Stems rigid, firm, erect or arched, branch- 

 ing, round, smooth (hispid above), hollow, leafy. Leaves orbicular, 

 cordate, with broad, blunt, crenulate lobes, on stout, elongate, 

 hispid leafstalks. Peduncles slender, unequal, spreading. Bracts 

 of the calycule linear, pointed. Calyx-lobes broad, mucronate, 

 much developed when in fruit, and becoming scarious and reddish. 

 Carpels strongly wrinkled across, with prominent toothed margin. 



Wandsworth Steam-boat Pier. Annual ; July- August. 



M. microcarpa ? Desf. — Stem round, rough with tubercles 

 and rigid stellate hairs. Leaves on hairy leafstalks, with plicate 

 pointed lobes. Flowers often in pairs, with slender, hairy pedi- 

 cels. Bracts of the calyx triangular. Calyx-lobes broad with 

 an abrupt point, ribbed and ciliate. Petals scarcely longer than 

 the calyx-lobes, strongly notched. Tube of the stamens hairy. 

 Fruit small, smooth at the bottom of the calycine cup, which is 

 but little enlarged after flowering. 



Wandsworth, with the above. Annual ; July-September. 



