80 Mr. Brown's Ohsevvntiom on ihc 



Since my attention has been again turned to tlie subject, T have 

 endeavoured to collect all that has been observed on the nerves 

 or vessels of the corolla ot'Compositar. a brief account of which 

 may be not altogether without interest. 



The earliest notice I have been able to fuul is contained in a 

 passage (in page 170) of G raw's Anatomy of Plants, where, in 

 speaking of syngenesious flosculi, he says, " they are frequently 

 ridged, or as it were hem'd like the edge of a band." And his 

 figure of a magnified floret of the common Marigold, in tab. 6l, 

 gives a tolerable idea of the marginal vessels of its lacinite. Grew 

 however takes no notice of the trunks from which these branches 

 arise, either in his text or plates. 



Van Berkhey, in his Dissertation on Compositae, published at 

 Leyden in 1760, though he makes no mention of the nerves of 

 the corolla in his text, yet in all the magnified figures he has 

 given both of ligulate and tubular florets, correctly represents the 

 trunks of the primary vessels, Avithout however noticing their ra- 

 mification in the lacinite. I am anticipated therefore by this au- 

 thor's figures exactly in the same degree as by the passage con- 

 tained in M. Cassini's second memoir. 



The accurate Schmidel, in the few Compositje which occur in his 

 Icones, has correctly represented the trunks of the primary ves- 

 sels, but has equally omitted their ramifications. 



In the Analysis Florum of Batsch, a work published in 1790, the 

 object of which was to give an idea of the structure of the natu- 

 ral families of plants, by a minute description and magnified 

 figures of one or more species selected from each. Coreopsis tripte- 

 ris occurs ; and although the vessels of its tubular floret are very 

 indistinctly figured, yet both their trunks and branches are cor- 

 rectly described. The same author however, who in 1802 pub- 

 lished 



