206 



XL VI. COMPOSITE. 



** 



Pappus pilose, filiform. 



7. 

 8. 

 9. 



t Achenes much compressed. Involucre of fruit erect 



Lactuca. Beak of achenes filiform. PaRnus vprv cnrf ' ^ ^ 

 Invol. few-flowered. ^^ ^^^^ ^°ft and flaccid. 



ft Achenes nearly terete, or angled at the base. 



10. Crepis. Pappus nearly white, soft, deciduous. Achenes witho„f 



11 T^i"'^' ''''"'^i>^ ^"'^ '^^■■' °"^' longitudinally striate """^ ^ 



11. BoRKHAusiA. Pappus white, soft, dedduous. Achenes terete B«.l- 



12T,.nv°^- ^"^^^^^^« °^fr^it oval, erect, ribbed and furrowed '^ 



12. Leontodon. Pappus white, soft, deciduous. Achenes sub compressed 

 ,„ „^eaklong. Invol. of fruit reflexed. "compressed. 

 Id. HiEKAciUM. Pappus brown, brittle. Beak 0. 



**• 



14. 

 15. 



Pappus neither filiform nor plumose. Receptacle naked. 



Lapsana. Pappus none, or a mere rim to the aJhene 

 UCHORIUM. Pappus of all the florets of erect scales. 



11. Florets all tubular, homogamous, or those of the ray neuter 

 Style swollen below its branches. Cv^^AROCEPHALiE. 



* Scales of the involucre with a hooked point. Achenes glahrous 



16. Arctium. Anthers with 2 bristles at the base ; appendages filiform. 



Scales of the involucre not hooked at the point. 



t Pappus of several rows, conspicuously unequal; inner row the lonaesi 



much longer than the glabrous achene. ^ ' 



17. Serratula. Pappus pilose, hairs filiform. Anthers ecatidate at 



the base ; appendages obtuse. ecatiaate at 



-L». bAussuREA. Inner pappus plumose, hairs thickened nf +1,« \.. 



Anthers with 2 bristles at fhe base • appe^nSlonitute. ''"' 



ft Pappus equal, long ; hairs united at the base into a ring. Achenes 



glabrous, 



'"• '^•-Serf ;iEh"J/t'S-. ^"""■" "■""'=-«■• K-eptacle bristly. 



Achenes silk//. 



22, Carlixa. 



tttt P«i>P«s or short (equal to, or shorter than the achenes). 



23. Cenxaukea. Eay frequently without stamens or pistils. 



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