4 ERYTHEA. 
and fugacious pappus-scales elude him; and so our author 
must be mistaken when he believes himself to have seen 
“seeds and pappus” of a plant of this genus embedded 
together in a buffalo pad. He really does not know the genus 
which he has ventured to call by this name. Also, seeing 
there is no known American Huphorbia with “hispid twigs,” 
the writer may have mistaken perhaps a Mentzelia or a 
Phacelia for an euphorbiaceous plant. If he knows the 
meaning of “hispid” he does not know Euphorbia; albeit the 
buffalo country abounds in species of that genus, few if any 
of which are other than indigenous, many of them peculiar 
to it. In support of my objection number three, I quote his 
placing of Asclepias Syriaca among plants observed by him 
along buffalo trails. It does not grow there, and never did, 
at least, not in Colorado, where Mr. Benthoud made his 
observations. But, granting that the writer actually knows 
the genus Asclepias—a concession which we should be fully 
warranted in witholding—two Species are common on the 
plains, and indigenous there, namely, A. speciosa and A. 
Jamesit, neither of which has ever been confused with 
Syriaca by any botanist, or can be. Nor can I here omit a 
suggestion of the absurdity of supposing that Asclepias seeds, 
means of transporta- 
tion to the ends of the earth, almost, on any stead 
assertions I give the following names taken from his 
list: Lippia cunetfolia, Chenopodium album, and Martynia 
