160 
BOTANY, 
as long as the stigmatic ; achenia pubescent. — Oregon to California ; Colorado. 
East Humboldt Mountains, on a peak of 10,000 feet altitude; August. (573.) 
ApLOPAPPUS LANCEOLATUS, T. &. Gr. Glabrous or at first slightly lanu- 
ginous ; stems 6-12' long, ascending from a deep fusiform caudex, corymbosely 
Ijranched towards the summit, and often with one or two longer branches 
from below the middle ; leaves rather rigid ; the radical lanceolate, 3-5' long, 
4-6" wide, narrowed into short petioles, sinuate-dentate or serrate ; upper 
ones oblong, entire or serrate, the base dilated and clasping ; heads 2-10, 
9'^ wide when expanded; involucre turbinate-hemispherical, the sparingly 
imbricated sub-equal scales lanceolate-oblong, slightly ciliate, greenish 
towards the tip; rays 16-25, yellow; disk-flowers numerous; appendages of 
the style lanceolate, about equal to the stigmatic portion ; achenia villous ; 
pappus of unequal brownish-white scabrous capillary bristles. — Saskatchewan 
to Oregon, Southern Wyoming and Nebraska. Clayey and alkaline meadows 
in Northern Nevada; 5-6,000 feet elevation; June-August. (574.) 
Var. Vaseyi, Parry, Ms., is more condensed, and wath a stouter 
caudex; heads 3-12, rather large; the scales of the involucre broader, wdth 
well-developed herbaceous tips, very unequal, and imbricated in several rows; 
rays deep saffron -yellow. — Colorado, (273 Vasey.) Parley's Park, Utah, in 
a muddy saline flat ; 6,000 feet elevation ; July. The Utah specimens have 
a less imbricated involucre than those from Colorado, and show the necessity 
of uniting Vascy's plant with the older species. (575.) 
Aplopappits tenuicaulis. Silky-tomentose, or at length nearly 
glabrous ; steins 6-15' long, very slender, curved and ascending from a fusi- 
form caudex ; leaves all narrowly lanceolate, rather rigid ; the radical 2-3' long, 
2-3" wide, entire or sparingly denticulate, narrowed into a very short 
petiole ; cauline ones sessile by a dilated base ; heads small, 2-6, racemose 
on slender p(!duncles ; involucre hemispherical, the broadly oblong scales 
tomentose on the l)a(;k, and ratlier obtuse; rays about 20, yellow; disk- 
flowers iiuiiiei-oiis ; hispid appendages of the style linear-lanceolate, tw^ice as 
long as the stigmatic portion ; achenia silky-villous ; pappus w^hite, of unequal 
almost plumulose capillary bristles. — Alkaline meadow in Ruby Valley, 
Nevada; 6,000 feet elevation; August. Near to A. lanceolatus, hut mWici- 
vnily distinguished from it by the narrow^er and at first white-tomentose 
h'aves, tlie very shuuh-r stems, racemosely rather than corymbosely branched, 
and the smaller heads, with different involucral scales. (576.) 
