



1 



ADVERTISEMENT. 



THE first and nearly half of the second Number of this Sketck 

 iiad b.en printed, before I could obtain a copj of Pursh's Flora 

 ^mericm Septentrionalis. This work, published in London under 

 the most favorable auspices, has enabled me to add to my own re- 

 searches, and those of the friends who have aided me, all that has 

 been collected in this country bj the travellers and botanists of Eu- 

 rope. Willing to avail myself of the advantages it afforded me, and 

 to present to my readers as compreliensive a view of our Botany as 

 possible J desirous also, not to ^dd to the confusion of synonymes, 

 which is becoming a serious evil in American botany, and to correct 

 a few inaccuracies which had been^ointed out io me, I immediately 

 reprinted the first number of my work^ In the second number the 

 alterations ^vere too unimportant to render this measure necessary. 



are 



\}e added to those I have already described. These shall again be 

 inserted in the supplement to this w rk, when this sheet may be de- 

 stroyed. They are now prefixed, that persons studying our botany 



ly nav 



PANICUM. 



.^ 



Vertic 

 P, spica 



Spikes verticillate, the 

 quaterrds ; invo- I branches by fours ; small 

 lucellJs unifloris, bisetis ; | involucrum 1 flowered, 2 

 cuhnis difttisis. Sp. pi. | awned ; stem diffuse. 



1. p. 334. 



Pursh, l.p. 66. 



_ Pursh remarks tliat he has seen this species in the herbarium of 

 Walter. 



Grows in sandy woods, from New-Jersey to Carolina, 

 yio vvei-s June — July. 



Walterf. Pursh. 



P. spiels alteriiis, erec- I Spikes alternate, erect, 

 tis, solitariis, simplicibus ; | solitary, simple j glumes 



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