[ 136 ] 



MONOECIA PENTANDRU. 

 433. XANTHIUM. Bur-weed. 



Linn. Gen. PL 487. Juss. \9l. FLBr.lOX?. Tourn. t. 252. Lam. 

 t.765. Gcertn.t.]64. 



Nat. Oi'd. Cojnposita:, ^, nucamentacea; . Linn. 49. Corym- 

 biferce, sect. 9, anomalce. Juss. 55. 



Barr,Jl. compound. Common Col. of many, thin, imbri- 

 cated, equal scales, on a level with the numerous j'?or£'/5. 

 Cor. compound, hemis})herical, uniform ; Jlorets monope- 

 talous, tubular, funnel-shaped, erect, in 5 equal, mar- 

 ginal segments. Filam. 5 in each floret, converging in 

 the form of a cylinder. Anth. erect, distinct, parallel. 

 Common Hecejit . scarcely any; ihe Jlorets are separated 

 by scales. 



Fert.Jl. below the barren ones. Common Cal. 2 -flowered, 

 of 2 opposite, acutely and unequally 3-lobed, leaves, 

 beset all about with hooked prickles, and closely united 

 to the germen in every part, except the segments. Cor. 

 none. Germ, oval, clothed with the prickly calyx. 

 Styles 2 pair, capillary. Stigmas undivided. Drtqm spu- 

 rious, formed of the permanent calyx, dry, elliptic-ob- 

 long, covered with prominent hooked prickles; cloven at 

 the summit. Nnt of 2 cells. Seeds solitary. 



Herbaceous, or somewhat shrubby, rather downy, of a 

 coarse habit. Leaves alternate, stalked, simple, lobed. 

 Stipulas in some spinous. Fl. axillary and terminal, 

 spiked, greenish, inconspicuous. Fr. large, aggregate, 

 armed with hooked adhesive prickles. 



1. X. strumarium. Broad-leaved Bur-vi^eed. 



Prickles none. Leaves heart-shaped ; three-ribbed at the 

 base. 



X. strumarium. Linn. Sp. PL 1400. Willd. v. 4. 373. FL Br. 1017. 



Engl BoL y.36. ^2544. FL Dan.t. 970. Ehrh. PL 0/.419. 

 X. n. 1621. HalL HisL v. 2. 292. 

 X. seu Lappa minor. Raii Syn. 1 40. Bauh. Hist. v. 3. p. 2. 572. f. 



Matth. Valgr.v. 2. 54b. f. 

 Xanthium. Fuchs. Hist. 579./. /c. 333./. 

 Bardana minor. Ger. Em, 809./. Mcrr. Pin. 14. 

 Small Burdock. Petiv. H. Brit. t. 1./. 12. 



