CL. V.] PENTANDRIA "TBIGYNIA. 157 



larger, irregular, the outer one largest, and the two inner 

 smallest. Filaments thread-shaped, longer than the corolla, 

 spreading, a little incurved ; anthers roundish. Germen egg- 

 shaped, slightly compressed transversely. Styles at first erect, 

 rather short, afterwards flattened, spreading, broad and pyra- 

 midal at the base ; stigmas obtuse, notched ; floral receptacle 

 undulated, crenate, a little broader than the base of the styles. 

 Fruit inversely heart-shaped, nearly flat, crowned with the 

 floral receptacle and styles. Seeds inversely heart-shaped, 

 deeply notched at the top 5 and more or less so at the base, 

 with five ribs ; four intermediate coloured lines in the inter- 

 stices ; the border narrow, flat. Juncture close, flat, nearly as 

 "broad as the seeds. Named after Hercules. 167. 



1 . H. Sphondy'lium. Cow-par snep. Hogweed. Leaves pinnate ; 



leaflets pinnatifid, cut and serrate. Stem about four feet high, 



branched, furrowed, rough with spreading hairs. One of the most 

 important of our plants as food for domestic animals, although ut- 

 terly neglected. The stem is eaten in the Hebrides. Biennial : 

 flowers in July : grows in hedges, borders of fields and pastures : 

 common. Eng. Sot. vol. xiv. pi. 939. Eng. Fl vol. ii. p. 102. 471. 



83. TOKDY'LIUM. HARTWORT. 



Flowers separated, irregular, those of the circumference fer- 

 tile. Calyx of five unequal, awl-shaped teeth. Petals five : 

 one of the innermost flowers smallest, nearly equal and uniform, 

 inversely heart-shaped, with an inflected point ; of the circum- 

 ference of the same form, the outermost largest. Filaments 

 thread-shaped, spreading. Anthers roundish. Germen egg- 

 shaped, rugged or bristly, transversely compressed. Styles 

 thread-shaped, erect, swelled at the base, afterwards spreading. 

 Stigmas simple. Fruit nearly round, transversely compressed, 

 crowned with the tumid bases of the styles. Seeds of the same 

 form, indistinctly striated, sometimes rough. Name used by 

 the Greeks. 168. 



1. T. maximum. Great Hartwort. Leaflets lance-shaped, deeply 

 serrated; flowers somewhat radiant, the outermost petal with 



equal lobes ; stem rough, with close deflected bristles. Stem 



three or four feet high. : flowers reddish. Annual: flowers in June 

 and July : grows in waste ground, about London and Oxford : 

 rare. Eng. Sot. vol. xvii. pi. 1173. Eng. Fl. vol. ii. p. 105. 472. 



TRIGYNIA. 



84. VIBU'KNUM. GUELDER-ROSE. 



Calyx superior, minute, of one leaf, deeply divided into five 

 segments, permanent. Corolla of one petal, bell-shaped, with 

 five obtuse, spreading segments. Filaments awl-shaped, spread- 

 ing, as long as the corolla ; anthers roundish. Germen round- 

 ish. Style none j stigmas three, sessile, obtuse. Berry round- 

 O2 



