112 PITTONIA. 
inland homologue, is A. fallax; and the two, as to the female 
plant, are so alike in aspect that I should never be able to 
distinguish them at a glance. But as to the involucres they 
are distinct enough; the scales in A. fallax being less than 
half their length herbaceous, and this part covered and ob- 
scured by wool, while in A. mesochora there in no such wool 
on the scales, and these herbaceous almost to the summit. 
But the male plants of A. fallax are again very strikingly 
unlike those of A. mesochora, being tall and stout, with not 
only broad but well elongated scale-tips which are evenly 
erose; and the male-bristle-tips in A. fallax are broad and 
sharply and deeply serrated. 
It becomes more and more certain, from these studies, 
that we can never know our antennarias well but by critical 
field study on the part of the most experienced investiga- 
tors, and in the light of knowledge of the staminate plants, 
which, though often rare, are most important. 
DoDECATHEON LAETIFLORUM. Stout stem firmly erect, 4 
to 1} feet high from amid a tuft of small leaves, the roots 
short and rather fleshy, the newly formed and uppermost 
even almost fusiform: leaves very small for the plant, obo- 
vate to nearly elliptical, about 1} inches long including the 
short petiole, the margins entire and minutely erisped, of 
plane and with a few evident small teeth, the whole plant 
pale-green, glabrous except as to the bracts, pedicels, and 
calyx, these sparingly glandular-puberulent: corollas large, 
the segments white, except at base, these for a short space — 
deep-yellow, the short tube below colored into a ring of 
deep violet-purple: stamens slightly monadelphous; anthers 
short, oblong, obtuse, exactly erect, not in the least con- 
nivent, the style well exceeding them. : 
An exceedingly beautiful large white-flowered species, 
