256 XLYIT. CAMPANULACE^. 



Anomalous Gemts, 



47. Xanthium^ Linn, Bur-weed. (Tab. V.) 



Monoecious. — Barren fl. Involucre of few scales, with many 

 small capitate flowers^ upon a common receptacle. Cal, o. 

 Cor. obovate, sessile. Anthers ternainating a tube which is in- 

 serted at the base of the cor. Germen abortive. — Fertile fl, 

 hiVohicre single, prickly, with two beaks, entirely closino- 2 

 flowers ; the 2 stigmas only protruded from small apertures 

 v/ithin the beaks. CaL 0. Cor. 0. Fruit 1 -seeded, included 

 in the enlarged and hardened involucre. Juss. — learned from 

 t,avQoc^ yellow ox fair ; because an infusion of this plant was 

 supposed to improve the colour of the hair. 



1. X. '^ strumarium L. (hroad-leaved B.)*^ stem unarmed, leaves 

 cordate angulato-dentate with 3 principal nerves at the base 

 fruit downy its beaks straight the prickles hooked. E. B 

 t. 2544. 



» Tab. VII. represents, at fig.l., a lowering specimen of X^?7^/^m^5/r^^,;^f^nMm. 

 the upper clusters or heads consist of barren, the lower of fmile fl^/e ^ ^ 



l-ig.2 Scale of the involucre with a barren flower. exhib'tin«- the rornlla Anrl 

 the staminal tube with five anthers. ' t^x"iu.Cin«- tne corolla ana 



2 



^'^'' ?n '^'Pu ^''''"^' ^"^ cotyledon being removed. 

 I'Jg. 10. The same, cut vertically through the two 



f 



I 



V 



3' 



Rare, in waste ground In the S. of England, and Kerry, Ireland. n (ii 



0, 8, 9 A rank, weed-like plant, remarkable for the curious ^ k! 



structure of its ^ozrers, and the prickly involucres which surround the 

 fertile ones, enlarging and becoming part of t\\Q fruit. It is scarcely 

 naturalised, and rarely ripens seed in the S. of England. 





Oed. XLVIL CAMPAXULACEiE Juss. 



Calyx-tuhe adnate with the ovojvj^ mostly 5-lobed, lobes per- 

 sistent. Corolla regular or irregular, mostly S-lobed, mar- 

 cescent ; estivation valvular. Stamens free from the corolla 

 and equal in number with its segments, free or more or less 

 combined. Anthei^s 2-celled, diritinct or rarely cohering, open- 

 ing longitudinally. Ovary with two or more polyspermous 

 cells. Style I, pubescent on the upper half. Stigma simple or 

 lobed, naked (not surrounded by a circle of hairs). Fruit dry, 

 opening between the dissepiments. Seeds fixed to the axis'. 

 Albumen fleshy : embrtjo straight. —Herbaceous or suffruticose. ' '" 



tent, 



'0 



1 ^1!^* ^' Ifu'Y ^""T^ ' consisting of a prickly monophyllo.is involucre with 



beaks, and the branches of the styles protruded beyond the beaks . , 



corolla ^^^ ^^^^^ ^^^ «P^- ^- ^^^o-the two pistils or'flowers without calyx or | J" 



fIH: f Se fr uif.''^''^ ^^ '^' persistent involucre (natural size). 



Fig. 7. Seed. 

 Fig. 8. Embryo, 



~Lr;.- f\ nil. _ .. _ 



cotyledons. 



.J' 



J «\ m 



