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MEMOIRS - OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



there appear to be such a conspicuous representation of sclerenchyma ; the excep- 

 tional development of such cells in leaves, as well as in other parts, appears to 

 be characteristic of Mutisieae. 



III. INVOLUCRE 



Structure of involucral bracts within a single species varies from outer to 

 inner bracts. Likewise, the tip of a bract may differ in anatomy from the base. 



Figs. 30-34. Diagrams of transections of outer involucral bracts, adaxial face above (sym- 

 bols explained in text). Fig. 30. Stenopadus connellii, Wurdack 34265. Fig. 31. Stenopadus 

 cucullatus, Maguire 35120. Fig. 32. Stifftia chrysantha, Trin. Bot. Gard. 1330 (GH) ;. Fig. 

 33. Wunderlichia mirdbilis, Glaziou 2168G (UC). Fig. 34. Chimantaea similis, SteyermarTc 4' 

 Wurdack 605. 



