360 MONCECIA -PENTANDRIA. [CL. XXI. 



PENTANDRIA. 



12. XA'NTHIUM. BUR-WEED. 



Barren Flower compound. Common calyx of many imbri- 

 cated, equal scales. Compound corolla hemispherical, uniform ; 

 florets of one petal, funnel-shaped, with five equal, marginal 

 segments. Filaments five in each floret, parallel, forming a 

 cylinder ; anthers erect, parallel, not united. Common recep- 

 tacle scarcely any, the florets being separated by scales. 



Fertile Flowers beneath the others. Common calyx two- 

 flowered, formed of two opposite, acutely three-lobed leaves, 

 covered with hooked prickles, and united to the germen. Co- 

 rolla none. Germen oval. Styles two pairs, hair-like ; stigmas 

 simple. Drupe formed of the permanent prickly calyx. Nut 

 two-celled. Seeds solitary. Name from xanthos, yellow. 431. 



1. X. strumdrium. Broad-leaved Bur-weed. Prickles none ; leaves 



heart-shaped, three-ribbed at the base. Stem two feet high, 



erect, branched, furrowed, leafy : leaves stalked, lobed, and doubly 

 serrate. Annual : flowers in August and September : grows in 

 dunghills and in rich ground, in the south of England : rare, and 

 not indigenous. Eng. Bot. vol. xxxvi. pi. 2544. Eng. Fl. vol. iv. p. 

 136. 1355. 



13. AMAKA'NTHTJS. AMARANTH. 



Barren Flowers. Calyx of three or five erect, lance-shaped, 

 coloured leaves. Corolla none. Filaments three or five, hair- 

 like, erect, as long as the calyx ; anthers oblong, two-lobed. 



Fertile Flowers in the same cluster. Calyx of three or five 

 erect, lance-shaped, coloured leaves. Corolla none. Germen 

 superior, egg-shaped. Styles three, sometimes two ; stigma 

 acute, downy on the upper side. Capsule egg-shaped, one- 

 celled. Seed solitary, globular, filling the capsule. Name 

 from a, not, and maraino, to fade. 432. 



1. A. Blitum. Wild Amaranth, Flowers three- cleft, with three 



stamens ; leaves egg-shaped ; stem spreading. Stems branched, 



round, furrowed, leafy: leaves roughish on the edges: flowers 

 green, in small axillar, leafy clusters. Annual : flowers in August : 

 grows on dunghills and in rich ground, in the south of England, 

 the outcast of gardens : rare. Eng. Bot. vol. xxxi. pi. 2212. Eng. 

 Fl. vol. iv. p. 137. 1356. 



14. BKYO'NIA. BRTONY. 



Barren Flowers. Calyx of one leaf, bell- shaped, with five 

 acute teeth. Corolla bell- shaped, with five egg-shaped, spread- 

 ing segments. Filaments three, short ; anthers five ; two to- 

 gether on two of the filaments. 



Fertile Flowers. Calyx and corolla as in the barren flower. 

 Germen inferior. Style three-cleft, shorter than the corolla ; 

 stigmas cleft, spreading. Berry roundish, smooth, with two or 

 more cells. Seeds in pairs, roundish. Named from bruo, to 

 shoot, or grow rapidly. 433. 



