162 



with that of Fernald (1940). The vars. natans and lorata are now 

 placed together because they seem to be phases of a more robust 

 southern subspecies in which the leaves may be either with or with- 

 out blades. The widely distributed collection oi A. H. Curtiss, no. 

 6536, from a shallow stream near Jacksonville, Florida, affords a 

 good example of specimens intermediate between vars. natans 

 and lorata. In this collection, some of the leaves on the same plants 

 are blade-bearing, while others are long and ribbon-like, rather 

 abruptly tapering at the tips. Since plants with blades occur in the 

 same region and even in the same habitats as those without blades, 

 and since the degree of stoutness appears not to be correlated with 

 the presence or absence of blades, there seems little basis for sepa- 

 rating these populations. Observation of a series of specimens in 

 the herbaria at Cornell University indicates complete intergradation 

 without geographic, ecologic or genetic barriers. 



The ssp. lorata is a plant of pools and streams in Florida and 

 coastal Georgia and South Carolina. As var. natans, Fernald (1. c.) 

 reports it occurring as far north as southeastern Virginia. 



Literature Cited 



Fernald, M. L. 1940. Sagittaria subidata, in A century of additions to the 



flora of Virginia. Rhodora 42:407-409. 

 Small, J. K. 1933. Sagittaria, in Manual of the southeastern flora, p. 22-26. 



Bailey Hortorium, 

 Cornell University, 

 Ithaca, N. Y. 



Chile Tarweed East of the Mississippi 



Harold N. Moldenke 



A glance through the various current manuals of the flora of 

 North America east of the Rocky Mountains soon shows that the 

 Chile Tarweed (Madia sativa Molina) is not recorded in Britton 

 and Brown's "Illustrated Flora of the Northern United States," 

 the seventh edition of Gray's "New Manual of Botany," Small's 

 "Manual of the Southeastern Flora," or Rydberg's "Flora of the 

 Prairies and Plains of Central North America." We must go to 

 the manuals of far western botany to find it recorded and de- 



