CERTAIN GENTIANACEAE. 91 
which he proposes as a new generic type De Candolle’s Scilla 
pomeridiana, which I knew to be a familiar Californian plant, 
commonly called Chlorogalum pomeridianum. This last generic 
name I recalled as certainly not published untila later date 
han this LAOTHOE of Rafinesque; and a subsequent comparison 
of the dates results in a showing of seven years of priority for 
LAoTHOE ; and I find that Mr. Jackson both gave this name a 
place in the Index Kewensis as a synonym, and also remarked 
its right of priority over the name assigned by Kunth in 1843. 
At Rafinesque’s date of 1836, only one species was known, 
but now thereare a half-dozen, all having been published under 
the name of Chlorogalum, which can have no other status by right 
than that of a synonym of LAorgog, the recognized species of 
which are 
L. AUGUSTIFOLIA. (Kell. Calif. Acad. ii. 104). 
L. DIVARICATA. (Kunth. Enum. iv. 682). 
L. LercHTuinit. (Baker, Gard. Chron. for 1874, p. 689). 
. PARVIFLORA. (Wats. Proc. Am. Acad. xiv. 243). 
. POMERIDIANA. (Ker.) Raf. Fl. Tell. iii. 53. 
. PURPUREA. (Brandg. Zoe, iv. 159). 
ac Be Ie 
On Certain Gentianaceae. 
Regarding my interpretation of the habitat of Pursh’s Swer- 
tia fastigiata, given on page 72 preceding, I have been persuaded 
by Mr. C. V. Piper that Pursh must be understood as meaning 
not on this side, but the other side of the Rocky Mountains ; 
and I have little reason to controvert such an opinion in the 
presence of one who, like Mr. Piper, has lived and travel- 
led along the route of the Lewis and Clarke expedition, and 
has particularly studied that route. Admitting, then, the 
correctness of Mr. Piper as to where the gentianaceous herb in 
question must have been gathered, it may have to be conceded 
that Pursh’s Swertia probably is what high authorities have 
maintained that it is, namely, Frasera thyrsiflora, Hook. 
Against this view it may be objected that, inasmuch as Pursh 
