163 
monoecious. The wind is so uncertain an agent, that species which 
had this two-fold security would be more likely to survive. Very 
few are annual. Ambrosia, mentioned before, is a remarkable excep- 
tion, but then the staminate are so arranged in reference to the 
pistillate flowers that self-fertilization appears to be pretty certain. 
J : We in 
§ 164. Townsendia.—Among the many interesting specimens/ 
sent by Dr. T. E. Wilcox, U. S. A., collected at Camp Supply, in the ~ 
Indian Territory, I find the following which seems to be new: ; 
Townsendia Wilcoxiana.—Acaulis ; foliis radicalibus spatulatis 
acutis hispidulis 1-14 policaribus; capztu/o magno, solitario (rarius du- 
obus) radicali sessili; invol. bracteis linearibus subacutis subequalibus, 
disco brevioribus, ciliatis, vix purpureis; radiis flor, masc. uniseriatis 
purpureis linearibus A/anis erectis, disco duplo longioribus (1’); disci 
flor. fem. tubulatis luteis cum dentibus 5 atro-fuscts ; pappo in radio 
et disco conformi, setibus ad 30 albis, disci longitudine. 
Resembles in habit 7. sericea, the original species, but differs 
specifically in the characters italicised above. All my specimens are 
with but one head, but there are specimens in the herbarium of 
Columbia College (confounded with those of T. sericea) which show 
a tendency to form two heads or a double head. A. Woop. 
§ 165. Borago.—This is the spelling of the word we find in Lin- 
neeus, but of late years the double ¢ has come into use. This change 
appears to have originated among the botanists on the continent of 
Europe, and to have gradually made its way into England and to 
this side of the Atlantic. Whatever the origin of the word, it 
seems to obtain in some form among both the Latin and Germanic 
nations, among the latter, however, more frequently with one +. 
As the double x is now adopted by so many eminent authorities, 
it seems advisable to abandon the Linnean spelling, and write 
Borrago, Borraginaceae, though we shall hardly change the English 
word Borage. It is curious to notice how little reliance can 
be placed upon spelling in a quotation. For we find Lindley, for 
example, quoting Tournefort, in his index, for Borrago, but in his 
list of genera, Borago. 
§ 166. Lechea.—In Bentham & Hooker’s Genera, at the close of 
the character of the order C7stinea, occurs the following : 
“Fr ORMAE ABNORMES.” 
“Flores dimorphi, alii apetali oligandri in Hedianthemis nounullis 
“et interdum in Lechea. a oe 
“Stamina interdum pauca, imo petalis pauciora in Lechea et in 
“ Helianthemis quibusdam.”” : 
The two forms of flower in Helianthemum Canadense are well 
known, and Linnzeus himself mistook a form of this Helianthemum 
for a Lechea, but I do not find any American authority for the state- 
ment that Lechea has sometimes dimorphous flowers, and presume 
that Dunal in:the Prodromus is the source from which Bentham and 
Hooker drew, but have not that work at hand. According to 
Rafinesque the flowers of Lechea are only open in the middle of the 
day. I have seldom seen them open, but have examined very many 
of different species when dried, and have never observed any ten- 
AS ens 
