SUMMARY. us 



ones often toothed at base, upper ones entire and linear. Stem 

 slender , freely branching, wiry, striate, covered with a loose cotton- 

 like down. Eoot fibrous. Cornfields, and in field crops. June, July 

 August. Annual. 



COW-WHEAT, MELAMPYRUM PRATENSE. Nat. Ord., Scrophu- 

 lariacecc. Calyx four-toothed, tubular, persistent ; much shorter than 

 corolla. Corolla monopetalous, irregular, deciduous ; upper lip later- 

 ally compressed; lower lip thrice-cleft. Flowers axillary, in pairs, 

 turned one way. Stamens four, didynamous. Anthers obtuse. Style 

 one. Stigma two-lobed. Capsule two-celled, oblong. Leaves lanceo- 

 late, opposite, sessile. Bracts in pairs, toothed -at base. Stem slender, 

 with opposite and spreading branches. Woods. May, June, July, 

 August. Annual. 



ORPINE, SEDUM TELEPHIUM. Nat. Ord., Crassulacece. Calyx 

 minute, fleshy, five pointed segments. Corolla regular, of five lanceo- 

 late acutely-pointed, pink, flat, widely-extended petals. Stamens 

 ten; anthers conspicuous. Inflorescence corymbose, dense, terminal. 

 Ovaries five, verticillate, one-celled. Leaves numerous, upright, 

 sessile, ovate, serrate, smooth, fleshy. Stalks numerous, erect, clus- 

 tered, tinbranched, round, solid, spotted with red. Borders of fields, 

 waste places, hedge-banks. July, August. Perennial. 



MEADOW SAXIFRAGE, SAXIFRAGA GRANULATA. Nat. 

 Ord., Saxifragacece. Calyx of five teeth, spreading. Petals five, pure 

 white, spreading, lanceolate. Stamens ten, inserted at base of calyx. 

 Styles two. Inflorescence paniculate. Ovary two-celled. Capsule 

 two-celled, beaked, many-seeded. Leaves exstipulate; lower leaves 

 on foot-stalks, reniform, lobed; upper leaves sessile or nearly so, 

 acutely-lobed, small and few in number. Stem erect, with clustering 

 subterranean tubers at base. Pastures and downs. May, June. 

 Perennial. 



FIELD SCABIOUS, KNAUTIA ARVENSIS. Nat. Ord., Dipsa- 

 cacece. Flowers in dense and flattened heads, on long peduncles. 

 Calyx tube adnate with ovary. Calyx of five bristly sepals, and cup- 

 shaped base. Outer florets large, unequal ; inner florets having equal 

 segments, all lilac, and all four-lobed. Receptacle hairy. Style one. 



