488 General Notes. [ August, 
saw that it was meant to refer to the rugose fruit, and therefore should 
have been written rhyssocarpa. 
The essential characters of the genus are: flowers dicecious ; the fe- 
male achlamydeous. 
The true Aenide are submaritime and have a pretty large and inde- 
hiscent utricle, which is somewhat fleshy when fresh. Our botanists on 
the whole have failed to make out more than one species. 
Moquin-Tandon, in De Candolle’s Prodromus, in 1849, added a sec- 
tion, Montelia, with a more membranaceous, utriculate, and smaller fruit, 
under which he placed two species, A. tuberculata, a new one, and A. 
ruscocarpa, which he took for Michaux’s of that name ; but the plant he 
describes is not the one figured in Michaux’s Flora, and I suppose is not 
distinct from Moquin’s own A. tuberculata. This belongs mainly to the 
banks of rivers and lakes. 
When I published the second edition of my Manual of the Botany of 
the Northern United States, I had in cultivation, from Fendler’s seeds, 
the Amarantus tamariscinus of Nuttall, which I saw had the characters _ 
of Acnida, sect. Montelia of Moquin-Tandon, except that the utricle was 
circumscissile in the manner of a true Amarantus. Whereupon, having 
adopted Huzolus, I followed up Moquin’s hint, and set up Montelia as a 
genus, upon what I took to be one polymorphous species; having, by a 
sad oversight, confounded Mogquin’s Montelia, which has a small and in- 
dehiscent utricle, with my M. tamariscina, the utricle of which dehisces 
transversely, and which likewise has far more slender fertile inflorescence. 
While correcting this gross mistake, I wish also to direct the attention 
of our botanists this summer to the coast species of Acnida, and to request 
that specimens be prepared, and also critically examined when fresh, with 
the view of soon determining whether I am justified in my belief that 
we have three genuine species on the Atlantic coast, or within reach of 
tidal water. If my present opinion is well founded as to the species, 
and as to the extent of the genus, the arrangement should be somewhat 
_ as follows :— 
Acnipa (Aenide Mitchell) Linn. 
(1.) Evacyipe. Utricle somewhat fleshy, indehiscent, large, t ¢ O° 
and a half to two lines long. 
A. RHYSSOCARPA, alias RUsOcARPA Michx. Fertile inflorescence 
the 
_ A. CANNABINA L. Fertile inflorescence slender or sometimes gome 
ate; utricle thinner and smaller, with acute and smooth angles, much 
exceeding the bracts ; stigmas very long and filiform, almost plumosely 
hairy. Salt marshes and river-banks even beyond brackish water, New 
England to Georgia, West Indies (?), ete. 
