SEE Se ee eS ee ee oe ee 
THE YUCCEAE. 81 
Y. flexilis patens (André) Trelease. 
Y. patens André, Ill. Hort. 173120. f. (1870).—Gard. Chron. 
18713 412. 
Y. pruinosa Baker, Gard. Chron. 1870 ¢ 1122. — Garden 8 ¢ 133. 
Y. gloriosa pruinosa Baker, Journ. Linn. Soc. Bot. 183 226. (1880). 
A garden form, said to have come from China, with less arched glau- 
«cous slightly rough-margined leaves: approaching some of the forms 
of Y. gloriosa. 
Y. gloriosa, Y. recurvifolia, and Y. flexilis, — the last 
two of which have frequently been treated as forms or 
varieties of the first-named, present a number of interesting 
and suggestive peculiarities when studied comparatively. 
Y. gloriosa occurs spontaneously among the sand dunes 
of a restricted portion of the southeastern Atlantic coast, 
where it is often intimately associated with Y. aloifolia 
and oneor moreforms of Y. filamentosa. Y.recurvifolia, 
except for one isolated group of stations, is known from a 
still more limited part of the same coast. Y. jlexilis is 
known only in gardens, and its source appears to have been 
as unknown to its describer as it is to those who now 
cultivate it. 
About these three so-called species, have clustered in 
horticultural literature a considerable number of cultivated 
forms, sometimes treated as varieties of one or the other 
and sometimes specifically named, all of them entire-leaved 
with the exception that the margin is more or less persist- 
ently a little roughened or denticulate or a little filiferous 
in several of them, and all, so far as I have observed rec- 
ords, flowering usually in late summer or later,— occas- 
ionally well on to the end of the season. 
These forms are not infrequently aberrant when placed, 
from the appearance of a character usually present in some 
other of the three species than the one under which the 
given form goes on the general assemblage of its characters. 
This interblending of characters in some of the variants of 
plants so distinct in their typical forms as Y. gloriosa, Y. 
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