14 



dently become established there many years ago, while young 

 trees were springing up from seed produced by the older trees. 



Hamelia patens Jacq. 

 The Hamelia grows in hammocks in the southern two thirds 

 of peninsular Florida and in the hammocks of the Florida Keys, 

 but it seems never to have been observed except as a shrub. 

 However, the writer has found specimens on the Everglade 

 Keys growing in the dense hammocks between Cocoanut Grove 

 and Cutler, reaching a height of 20 feet and with a trunk diameter 

 of fully 6 inches. 



New York Botanical Garden. 



TRAGOPOGON PRATENSIS X PORRIFOLIUS 



By Earl E. Sherff 



So far as the writer can find, the presence in the United States 

 of hybrids between our two well-known species of salsify, Trago- 

 pogon pratensis L. and T. porrifolius L., has not heretofore been 

 observed with certainty. Britton and Brown* state that "an 

 apparent hybrid between . . . [these two species] . . . has been 

 noticed at New Brunswick, N. J." But more recently, Brittonf 

 omits mention of this "apparent" hybrid and, similarly, Gray's 

 New Manualt fails to record it. 



That there exists, however, within the two species in question 



a potentiality for hybridization, was demonstrated by Linnaeus§ 



as early as 1759. By removing the pollen of T. pratensis and 



placing upon the stigmas some pollen from T. porrifolius he 



secured hybrids with an intermediate color scheme in the flowers. 



Instead of the yellow peculiar to T. pratensis or the purple 



peculiar to T. porrifolius, the heads of the hybrid exhibited both 



red and yellow. These colors were somewhat approximated later 



in spontaneous hybrids observed by J. Lange|| in the Danish 



*Illustrated Flora, p. 269. 1898. New York. 



tMan. of Flora of Northeastern States and Canada. 1905- New York. 



JGray's New Manual. 1908. New York. 



§Amoenitates academicae, X., p. 126. 1790. Erlangen. 



llSee Focke, Pfianzen Mischlinge, p. 222. 1881. Berlin. 



