and acute, not very numerous, but somewhat in 3 series, rather unequal;
the inner whitish, with a brownish mid-nerve, nearly glabrous. Inner
pappus of few (15-20) bristles ; the exterior fewer and very small.
32. E . decumbens (Nutt.): scabrous-pubescent; stems slender,'decumbent
or ascending, glabrous at the base, leafy, numerous from the same root,
somewhat branched or corymbose at the summit; the branches bearing single
heads; leaves linear, entire, acute; the lower somewhat lanceolate, tapering
into a petiole ; rays (white, Nutt.) more than twice the length of the linear
hairy and rather loose scales of the involucre; exterior pappus minute.—
Nutt. ! in trans. Amer. phil. soc. (n. str.) 7. p. 309.
Rocky Mountains towards the Oregon, Nuttall! Wahlamet, Douglas !—
Stems more slender than in E. corymbosum, 10-15 inches long; the whole
plant scabrous-pubescent, not hoary, leafy nearly to the summit. Leaves
2—3 inches long, often less than 2 lines wide; the lower attenuated into
slender petioles. Heads as large as a Daisy, on slender peduncles. Scales
of the involucre narrow, acute, nearly in a single series. Rays 40-50, in a
single series.
33. E . corymbosum (Nutt.): canescently pubescent throughout; stems -
numerous from the same root, erect, bearing few (3-5) corymbose heads at
the summit; leaves lanceolate-linear, entire, acute, sessile ; the radical lanceolate
or slightly spatulate, tapering into a petiole ; rays (blue) about twice
the length of the lanceolate canescent appressed scales of the involucre;
aehenia minutely h a iry ; exterior pappus squamellate-setaceous, very distinct.—
Nutt.! in trans. Amer. phil. soc. (n. ser.) 7. p. 308.
Rocky Mountains, in about lat. 42°, towards Oregon, Nuttall!—Plant
6-8 inches high, rather stout, hoary with a close and short pubescence.
Leaves rather rigid, strongly 1-nerved, 1-3 inches long, about 2 lines wide.
Heads middle-sized, on naked peduncles. Scales of the involucre in about
2 nearly equal series, appressed, hirsute-canescent. Rays 30 or more, in a
single series. Pappus somewhat brownish; the exterior rather copious,
shorter than the 2-3-nerved compressed aehenia.—Habit of Chrysopsis, and
with a similar exterior pappus.
34. E . ochroleucum (Nutt.): somewhat casspitose, low; stems numerous
from a thickened caudex, simple, slender, naked above, pubescent with appressed
hairs ;' bearing solitary or rarely 3-5 heads; radical leaves crowded,
very narrowly linear, tapering into a petiole ; the caUline few or scattered,
sessile; rays (ochroleucous, Nutt.) scarcely twice the length of the pubes-
cent-tomentose linear-lanceolate scales of the involucre; aehenia somewhat
pubescent; exterior pappus squamellate-subulate, very distinct.—Nutt. ! in
trans. Amer. phil. soc. (n. ser.) 7. p. 309. Diplopappus linearis, Hook. Jl.
Bor.-Am. 2. p. 21. (ex descr.) Chrysopsis hirtella, DC. prodr. 5. p. 327 ?
Plains of the Oregon, Nuttall! On dry rocks and sandy grounds near
1 Priest’s Rapid,’ and on Lewis River, Douglas ! Aug.—Stems 3-5 inches
high, often simple and scape-like, leafless above and bearing a single head ;
frequently more leafy and bearing 3 or 4 heads on'naked peduncles. Leaves
clustered at the base, slender, 2-3 inches long, rather rigid, slightly dilated
upwards or near the apex, or somewhat spatulate-linear, half a line to scarcely
a line in width, resembling an Armeria, nearly glabrous when old, at first
clothed with slender, appressed hairs: cauline leaves nearly similar, but
sessile, often almost filiform. Heads as large as in E. alpinum. Scales of
the involucre nearly equal and somewhat in a double series. Rays 50 or
more, in a single series. Inner pappus of few bristles.—This is without
much doubt the Diplopappus linearis of Hooker) and the Chrysopsis hirtella
of De Candolle (described from imperfect specimens): having yellowish-
white rays (according to Nuttall,) it certainly closely approaches Chrysopsis.
The style, receptacle &c. agree with Erigeron. ,
35. E . ccespitosum (Nutt.): dwarf, canescent with a close and short pubescence
; stems numerous from a thickened caudex, casspitose, decumbent,
mostly simple and terminated by single heads ; leaves linear-oblong, rather
obtuse, entire; the cauline sessile; the radical clustered, oblanceolate or
spatulate-oblong; rays (white or pale rose-color), very numerous and somewhat
in a double series, twice the length of the birsute-tomentose involucre;
aehenia hairy ; exterior pappus squamellate-setaceous, very distinct.—Nutt.!
in trans. Amer. phil. soc. (n. ser.) 7. p. 307.
(3. grandiflorum: larger; stems occasionally somewhat branched; rays
more than twice the length of the involucre.—Diplopappus grandiflorus,
Hook. ! Jl. Bor.-Am. 2. p. 21.
Dry hills of the Platte, in the Rocky Mountains, and on the Colorado of
the West, Nuttall! /?. Plains of the Saskatchawan and prairies of the
Rocky Mountains, Drummond!—Stems 3-5, or in [3. often 6-8 inches high.
Radical leaves in dense clusters, about 2 inches long, or in /3. larger, obscurely
3-nerved; the cauline 4-1 inch long, obtuse or abruptly acute.
Scales of the involucre appressed, narrow, very acute, the exterior shorter,
the interior broader.—The head is about as large as a Daisy in Mr. Nuttall’s
plant: in the specimens of Drummond, the heads, as well as the whole
plant, are larger, and the rays longer. Mr. Nuttall has overlooked the exterior
pappus ; the squamellate seta; of which, although not numerous, are as
large and distinct as in any species of this section.
$ Species unknoum to us.
36. E . (Pseuderigeron) canescens: canescently pubescent; leaves linear-
lanceolate, entire, very much narrowed at the base; the lower on long
petioles; stem simple, corymbose ; the branches elongated, leafy, bearing
single heads ; scales of the involucre narrow, very acute, hirsute-scabrous.
Hook.—Diplopappus canescens, Hook. Jl. Bor.-Am. 2. p. 21.
Saskatchawan, between Carlton House and Edmonton House, Drummond!
—According to Hooker, this plant may possibly prove to be a variety of his
Diplopappus grandiflorus, which is a large variety of E. caespitosum, N u tt.;
but it is said to be a taller, more erect, and corymbose plant, with smaller
heads.
37. E . lonchophyllum (Hook.): stem tall, simple, hispid; leaves very
long, linear, glabrous, nerved, ciliate; the lower ones linear-spatulate; raceme
terminal, leafy, many-flowered ; peduncles elongated, somewhat leafy
(foliolosis) ; rays numerous, narrow (white ?), scarcely longer than the
copious pappus. Hook.jl. Bor.-Am. 2. p. 18.
Saskatchawan, Drummond.—Apparently a remarkable species, founded
on a single specimen, said to be about 2 feet high, very hispid with spreading
and rigid white hairs ; the cauline leaves several of them 6 inches long and
2-4 lines broad; the heads similar to those of E. glabellum: but in the
specific character the rays are said to be scarcely longer than the pappus.
38. E . hispidum (Nutt.): stem erect, corymbose, above scabrous and hispid
; leaves entire, ciliate and scabrous on the margin; the radical spatulate;
cauline sessile, acuminate ; peduncles elongated, one-flowered ; scales of the
involucre hoary, hispid, very hirsute, much acuminated; rays very numerous.
Nutt, in trans. Amer. phil. soc. (n. ser.) 7. p. 310, not of DC.
“ St. Barbara, California.—Nearly allied to E. speciosum, from which,
however, it is very distinguishable, by its exceedingly hirsute involucrum,
and hispid, naked, elongated peduncles; the leaves appear, also, broader,
and scabrous towards the points. Rays blue, more numerous than in E.
speciosum, and not so long. Pappus double in ray and disk; rays [bristles]
20 to 24, persistent.” Nutt.—We have not seen this plant. There is probably
a typographical error in the character; the word ‘ hispid’ should proba