320 PITTONIA. 
even the coarser hairs are then visible under a lens, chiefly 
by virtue of their dark color, for they are almost concealed 
by the tomentum which invests, or seems to invest, the mar- 
gin as well as the lower face of the leaf. 
Var. AMBIGENS. Not as tallas the type, the stems more 
leafy, their foliage more ample, slightly and about equally 
arachnoid-tomentose on both faces; the leaves and inflores- 
cence slightly glandular, less so than in the type; heads 
fewer; leaves of the stolons smaller, thinner, more spatulate, 
arachnoid above, tomentose beneath, but even the tomentum 
of the lower face mostly deciduous. 
Of this certainly very notable variety not many plants 
have been seen, and all of them females. It grows with A. 
arnoglossa, and is at the season of flowering almost hoary, 
while the type is bright green. It is, of all the forms grow- 
ing near Washington, the latest to flower. 
Of the typical A. arnoglossa, after many hours of careful 
search expended upon aeres of the plant, I have found two 
small patches of the male; and I am glad to be able to re- 
port that these, in general aspect, as well as in the character 
of the inflorescence, are extremely unlike the males of A. 
decipiens. It would be impossible to confuse them, even in 
the poorest conceivable herbarium specimens. 
The extremely plantain-like appearance of this species, 
rendering it, by comparison, the only Antennaria meriting 
the name plantaginifolia, finds expression in the Greek-made . 
name which I have provisionally assigned it, arnoglosson 
being the ancient Greek name of plantain. 
As for A. decipiens, of which I knew only the male plant 
at the time of publishing it, I am now able to give account 
of the female; for it is quite as common as the male, in cer- 
tain localities within the District of Columbia. Moreover, 
in treating all the hoary-leaved (as to both faces) plantag- 
ineous forms as belonging to A. decipiens, I now perceive 
that the name covers an aggregate of forms, several of which 
