DESCRIPTION OF THE SPECIES. 279 



CONOSPERMITES Ett. 



CONOSPERMITKS ELLIPTICKS, sp. IIOV. 

 Pl:if(> CXXXVIII, Fi-;. 14. 



Leaves very thick and leathery, witli entire margins, elliptical in 

 snape; nerves three in number, slender but distinct, one modinl and two 

 marginal, the latter parallel to the margins of the leaf, all running from 

 the base to the apex, and apparently uniting at the apex ; no other nerves 

 seen. 



Locality: Road-side near Potomac Run. 



Only one specimen was found. The thick leathery texture of the 

 'eaves concealed all the nervation except the three main nerves. Tliey 

 continue without much diminution from base to apex. 14" is a reproduc- 

 tion of the leaf 



ACACLEPHYLLUM, gen. nov. 



Leaves in outline elliptical or spatulate, in texture quite thick, nar- 

 rowed gradually below into a long petiole; leaves inserted very obliquely 

 on compai'atively stout stems, arranged spirally ; })etiole, on entering the 

 lamina of the leaf, S[)litting up into a comparatively stout middle nerve 

 and two lateral ones, the latter varying in stoutness ; each main nerve 

 sends off very oblii[U('ly subordinate nerves, which anastomose with the 

 adjacent ones to form long and irregular meshes; ultimate nerves not seen; 

 the midnerve splits up towards the apex by sending off lateral nerves. 

 These leaves are more like those of some of the acacias of New Holland 

 than any other plants. We may compare them with the phyllodes of 

 Acacia salicina Lind., and A. longifolia Willd. 



ACACI^PHYLLIIM LONGIFOLIUM, Sp. nOV. 

 Plato CXXXVII, V\^. (i: I'late CXXXVIII, Pig.s. l-:i. 



Entire leaves not seen, but long elliptical in form, gradually narrowing 

 below into a long petiole: midnerve persistent to near the summit of the 

 leaf, comparatively strong, somling off very obliquely .slender secondary 



