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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 9, No. 3 



FIG. 107. Stomatochaeta crassifolia {Cowan & Wurdack 31162), portions of flower drawn 

 to show venation. A, corolla; B, style; C, achene; D~I, sections of corolla base and achene 

 at the Uvels indicated. A, B, X 4.5; C-I, X 9. 



(fig. 106 D, F), but rather than extending to the base of the achene> they join ex- 

 terior bundles at various points toward the top of the achene (fig. 106 D). Nu- 

 merous other interior bundles, which terminate freely above, are present in 

 the achene. Together with the ovule trace, these form, in the achene base, a 

 plexus which separates into branches which join exterior bundles below. The 

 ovule trace is unbranched. At the base of the achene, all of the exterior bundles 

 unite into a single strand of vascular tissue which passes into the receptacle. 



The floral vasculation of Stifjtia chrysantha differs in several features from 

 that of Stenopadus: union of laterals beneath the sinuses of the corolla; union 

 of stylar traces with exterior achene wall bundles near the top of the achene; 

 and union of all achene bundles at the base of the achene to form a single strand. 

 Aside from these features, the venation is not unlike that of Stenopadus, an 

 interesting similarity being the large number of interior bundles present in the 



