280 PITTONIA. 
of tube and limb: some of the outer achenes 10-nerved, all 
setulose-pubescent. 
Species apparently not collected except by Charles 
Wright; mistaken by Dr. Gray latterly for the equivalent 
of his var. Arizonieum, from which it differs very much in 
general appearance, being much more herbaceous and leafy, 
and showing a different involucre as well as corollas of quite 
another form. Its habitat is somewhere in eastern New 
Mexico or adjacent Texas. What are probably the original 
specimens exist in Wright’s distribution under n. 1,147. 
E. Arizonicum. Suffrutescent, 2 feet high, rather widely 
branching, the very minutely scaberulous stem and branches 
striate-angled: leaves all opposite, deltoid, 1 to 2 inches long, 
on petioles of 4 inch, serrate-toothed, venulose, scabrous 
beneath, especially on the veins, otherwise glabrous: cymes 
dense and short-peduncled: bracts of involucre in 2 some- 
what unequal series, rather strongly scaberulous: corolla 
white or pinkish, the tube shorter than the oblong subcy- 
lindric limb: styles exserted, their branches filiform but 
with short thick tips: achenes setulose. 
Common in the mountains of Arizona and adjacent New 
Mexico, and forming the chief part of Gray's E. occidentale 
var. Arizonicum, but wholly distinct from the real Æ. occi- 
dentale by many characters. 
9. Certain Species of ANTENNARIA. 
As the pioneer in research upon the identity of the Gna- 
phalium plantaginifolium of Linnsus, I have naturally read 
with interest Prof. Robinson's recent paper discussing some 
old specimens still preserved in London herbaria'; not, how- 
! RHODORA, iii, 11. 
