SUMMARY. vii 



PINK PERSICABIA, POLYUOXUM PERSICARIA. Nat. Ord., 

 Polygonacece. Perianth, five deeply-cut segments ; pink. Inflores- 

 cence spicatc, terminal, compact, cylindrical. Stamens six, inserted 

 into base of perianth. Styles two or three. Stipules sheathing, and 

 fringed with short bristly hairs. Achene wingless, compressed, 

 gibbous. Leaves lanceolate ; lower ones on stalks, the upper 

 ones sessile; glabrous, often with dark blotch in centre, entire. 

 Stems smooth, erect, jointed, freely branching, brittle. Eoot fibrous. 

 Waste places, moist ground, ditches, and roadsides. July, August, 

 September, Annual 



TORMENTIL, POTENTILLA TORMENTILLA. Nat. Ord., Rosacece. 

 Calyx ordinarily eight-cleft, the alternate divisions being smaller. 

 Petals ordinarily four, but occasionally five ; bright yellow. Style 

 short, simple. Stamens peryginous; anthers two-celled. Carpels 

 many. Fruit a mass of minute achenes on a common flat receptacle. 

 Lower leaves often stalked; upper ones sessile, digitate; segments 

 lanceolate, deeply serrate, alternate, having stipules. Stems freely 

 forking, procumbent or ascending; peduncles axillary. Boot-stock 

 large and woody. Moors and dry pastures. June, July, August. 

 Perennial. 



CINQUEFOIL, POTENTILLA REPTANS. Nat. Ord., Rosacece. 

 Calyx ten-cleft, the alternate segments being smaller. Petals broad, 

 five; bright yellow. Flowers singly on long peduncles, axillary. 

 Achenes numerous, small, placed on a flat, dry receptacle. Leaves all 

 stalked, five or seven obovate, coarsely serrated leaflets. Stems 

 rooting at joints, slender, prostrate, freely running. Stipules ovate, 

 entire. Meadows and hedge-banks, roadsides. June, July, August, 

 September. Perennial. 



GREATER WILLOW-HERB, EPILOBIUM IIIRSUTUM. Nat. 

 Ord., Onagracece. Calyx four-cleft. Petals four, erect at base, notched, 

 spreading, conspicuous; pink. Flowers regular. Stamens eight, in- 

 serted in calyx, erect, four longer than the others. Style filiform, 

 erect ; stigma deeply cut into four lobes. Pod long, quadrangular, 

 four-celled, many-seeded. Seeds having tuft of silky hairs at one 

 extremity. Leaves partly clasping stem, ovate, lanceolate, hairy, 

 serrate. Stem freely branching, erect, rigid, stout. Eoot creeping. 

 Damp low-lying ground, osier-beds, and margins of streams. July, 

 August. Perennial. 



HONEYSUCKLE, LOXICERA PERICLYMENVM. Nat. Ord., Ca- 

 prifoliacecB. Calyx globular, having five small teeth. Corolla having 



