324 On the Discovery of two species of Trichomanes. 
barely a line long, much shorter than they are described by Choi- 
sy ; while the ripe fruit, in well developed specimens, is 4 or 5 
lines long (3 lines, Choisy): it is articulated with the apex of 
the pedicel (as it is in a glabrous, eae destitute of 
its lillorenteiles and the singular form of the fruit. I pif the 
later name of Senkenbergia ‘for this subgenus, because there is an 
earlier genus Tinantia or Tinnantia. The first published spe- 
cific name “gypsophiloides” is so inappropriate, that I venture, 
in restoring the plant to Boerhaavia, to adopt the characteristic 
name given by Pavon in his herbarium. 
The other species distributed in Mr. Wright’s numbered collee 
tions appear to be: B. erecta, Linn. various forms, all of them 
apparently with annual roots '(No. 609, 1726, 1727, shee B. 
panroutata, Rich. (No. 611); and B. viscosa, ‘Lag. (No. 612). 
Art. XXXIV.—On the Discovery of two species of Tricho- 
manes in the State of Alabama, one of which is paste pie! 
Asa Gray, M.D. 
Wiru one exception, no iswsbuptiniuanees Fern has been 
supposed to grow within the limits of the United States; 0% 
when the nature of our climate is considered, would an hb such 
Fern be expected to occur, except, perhaps, in Florida. 
exceptional case referred to, that of Hym menophyllum rey 
Swartz, said by Willdenow to come from Pennsylvania, as W' 
as the West Indies, doubtless rests on some mistake. At least 
ste enumerated in the Catalozus Ricakanas 4088 sept 
2) of Muhlenberg, who was Willdenow’s chief North American 
4 nace nor is it found in the Muhlenbergian herbarium 
“Se :scab rson, so far as | know, who pretends to have e seen 
the ae m bikie country is Pursh, who, in his Vora Amer. ans 
r i= sim the habitat “In shad y forests; on the trunks of 
nsylvania and Virginia, v. v.” I fear that this eee 
al cannot be implicitly received, however, since more tT 
ors pee — in which this author has oe the ae 
of a species and employed the sign v. v. where he never 
a locality No chi of any yma 
