66 LEAFI.ETS. 



its whitish glaucous stems ; the whiteness being due to bloom, 



not pubescence. 



In early August, 1901, Mr. Macoun again collected the 



gton 



There is also 



Herb, a snecimen bv Alfred Ricksecker from the 



Macoun 



likely to prove the common, if not the only hibiscus of the 

 Lake Erie marshes. It differs from //. palustris not only in 

 respect to its comparative lack of pubescence. Its leaves are 

 lobed below the middle, not above it. 



Hibiscus platanoides. Akin to H. lasiocarpus, but stem 



glabrous, leaves short-petioled and the blades not cordate but 

 nearly as broad as long, not even acute, but lightly and 

 unevenly angled after the manner of those of Platanus occi- 

 dentalis and dentate like them, not serrate, about 3 inches 

 long, often quite as broad, whitened and sparsely stellate 

 beneath, dark-green and strigose-hairy above but not velvety : 

 peduncles few and umbellate at summit of the stem only; 

 bracts of involucres equalling the calyx, this cleft to the 

 middle and the lobes triangular-lanceolate, very acute : corolla 

 cream-color, 4 inches long, the petals not cuspidate. 



South Pass, lyouisiana, 20 June, 1900, collected by S. M. 

 Tracy. The foliage as much like that of Platanus occidcntalis 

 in outline as can well be imagined. Mr. Tracy informs me 

 that he could never identify it by any description extant. 



Hibiscus pinetorum. Stems smooth and glabrous below, 

 the upper part, together with petioles and peduncles dotted 

 with scattered stellate or tufted short hairs : leaves long- 

 petioled, the blade 3 to 5 inches long, ovate-lanceolate, with 

 a pair of subhastate lobes at about the middle, above these 

 acuminate and lightly subserrate- toothed, upper face dark- 

 green and glabrous, lower whitened and closely pubescent, 

 but on the veins beset with only scattered substellate hairs : 



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shore of Lake Erie in Ohio, at Vermillion, a point quite oppo- . 



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