25. S ericocarpus. Pappus simple, unequal. Flowers of the ray and disk few.
Involucre oblong, imbricated, cartilaginous.
26. A ster. Pappus simple, copious. Rays numerous, in a single series. Involucre
more or less imbricated. Receptacle alveolate.
27. E rigeron. P ap p u s e ither simple (n o t copious), or double; the exterior setaceous
subulate or squamellate. Rays, very numerous, and often in
two or more series. Scales of the involucre nearly equal, almost in a
single series. Receptacle naked.
28. Diplopappus. Pappus double; the exterior short and setaceous or squamellate
subulate. Rays in a single series. Involucre imbricated.
* * * Pappus of the ray and disk dissimilar.
29. T ownsendia. Pappus simple; that of the disk composed of subulate-capillary
bristles; of the ray short and subulate. Achenia compressed.
30. Chetopappa. Pappus double; the inner of 5 rigid bristles; the exterior of
1 to 5 hyaline scales. Achenia newly terete.
31. Boltonia. Pappus of several very small, and 2 or more rigid and subulate
larger bristles. Achenia flat, margined.
Suhdiv. 2. Bellidee.—P appus none, or minute and coroniform.
32. Bellis. Achenia obovate, compressed. Pappus none.
33. A phanostephus. Achenia terete. Pappus a very minute crown.
Subdiv. 1. E u a s t e r e e .—Pappus, at least the inner, composed of capillary
or rarely subulate bristles. (Euasterese, Diplopappese, Erigerese, & Heteropap-
pese, DC.)
22. GALATELLA. Cass. diet. 37. p. 463 ; Nees, Ast. p. 158. (excl. spec.)
Galatea, Cass. (diet. 18, cf-c.); Less.
Heads many-flowered; the ray-flowers few (3-12), sterile, but usually
furnished with a rudimentary style, and sometimes with one or two abortive
filaments; those of the disk tubular, perfect. Involucre shorter than the
disk ; the scales closely imbricated in 3 or 4 series, sometimes obscurely 1-3-
nerved or slightly carinate, destitute of herbaceous tips; the outermost
bracteolate. Receptacle alveolate, the alveoli toothed. Corolla of the disk
with a cylindrical tube, and an expanded deeply 5-cleft limb ; the lobes lanceolate
linear, spreading. Anthers exserted. Branches of the style (in the
disk-flowers) linear, terminated by a short and broad deltoid-spatulate or triangular
appendage. Achenia oblong or slightly cuneiform, somewhat compressed,
silky-villous. Pappu3 composed of copious rather rigid unequal
serrulate-scabrous capillary bristles; that of the ray similar but rather
shorter.—Perennial herbs (natives of Europe, Northern Asia, and the United
States); the stems simple below, corymbose at the summit. Leaves alternate,
lanceolate or linear, entire, rather rigid, 1-3 nerved, veinless, often
impressed-punctate. Heads terminating the fastigiate branches. Rays blue,
purple, or nearly white; the disk-flowers yellow, sometimes changing to
purplish.
Galatella scarcely differs from Linosyris except by the presence of (white or blue)
rays; and these, according to Ledebour, are sometimes wanting in G. dracunculoides:
the two genera have also nearly the same geographical range. The sterile
rays chiefly distinguish it from Aster §1 Orthomeris (species of Calimeris of
authors); to which Aster nemoralis, Ait. belongs.
1 . G. hyssopifolia (Nees): nearly glabrous, minutely scabrous; the corymbose
branches numerous and crowded; leaves lanceolate-linear, acute,
narrowed at the base, punctate, 3-nerved ; those of the branches small, subulate
linear ; involucre about half the length of the disk ; the scales acutish ;
the exterior ovate-lanceolate, rather fleshy ; the interior larger, linear-oblong,
with membranaceous margins; rays 5-10, longer than the disk.—Nees, Ast.
p. 160 ; DC. ! prodr. 5. p. 255. G. albiflora, Cass. diet. 18. p. 58. (under
Galatea.) Aster hyssopifolia, Linn.! mant. p. 114; Willd. ! spec. 3. p.
2022 ; Pursh ! Ji. 2. p. 543; Ell. ! sJc. 2. p. 342.
/3. 1 leaves mostly 1-nerved ; rays 3-7, not exceeding the disk.—G. lini-
folia, Nees, l. c .; DC.! 1. c. (excl. syn. Linn.) G. albiflora, Cass, in diet,
sci. nat. 18. p. 58, fide Nees. Chrysopsis linifolia, Nutt. gen. 2. p. 152.
“ Sandy fields and woods, New Jersey to Carolina,” Pursh! Aug.-Oct.
—Stem 1-2 feet high, strict. Leaves 1-3 inches long, spreading, 1-nerved,
and often with two less distinct lateral nerves. Rays white, tinged with purple.—
This is a very uncommon plant, if indeed it be a native of the United
States. We have never met with an indigenous specimen, unless that in
Elliott’s herbarium, communicated by Muhlenberg, should prove to be so.
Nees, however, professes to have seen not only spontaneous specimens of his
G. linifolia (which appears to differ,from G. hyssopifolia merely in its short
rays), but even to have met with New Jersey specimens of G. dracuncu-
loides. His G. leplophylla, an impunctate species of unknown origin, is
also conjectured to be a native of North America. The species of Galatella
are still in much confusion.
23. CORETHROGYNE. DC. prodr. 5. p. 215.
Heads many-flowered ; the ray-flowers neutral, numerous, in a single series
; those of the disk tubular, perfect. Scales of the hemispherical involucre
imbricated in several series, lanceolate or linear, with somewhat spreading
tips; the exterior shorter. Receptacle flat, obscurely alveolate, sometimes
with linear chaff scat tered among the flowers. Rays linear, elongated;
the corolla of the disk cylindraceous, with 5 short (somewhat hairy) teeth.
Anthers tipped with a filiform-cuspidate appendage. Branches of the style
linear, bordered with conspicuous stigmatic lines, tipped with a dense peni-
cillate tuft of rather rigid bristles. Achenia of the ray none, or a mere rudiment
; of the disk cuneiform or turbinate, silky or villous. Pappus simple,
of numerous rather rigid scabrous uneq ual bristles; that of the ray obsolete, or of
few short and unequal bristles.—Perennial herbs or suffrutescent plants (natives
of California), clothed with a soft and white, at length somewhat deciduous
wool; the branches terminated by rather large solitary heads. Leaves
numerous, linear-lanceolate or oblanceolat.e, mucronulate, closely sessile ; the
radical and lowermost tapering into a petiole, serrate or toothed towards the
apex. Rays violet-purple; the disk yellow. Pappus turning reddish-brown
or purplish.
To this interesting genus (founded upon a Californian plant collected by Douglas)
we had referred, from their description, the Aster 1 filaginifolius and A, 1 tomen-
tellus of Hooker & A rnott in Beecliey’s Voyage. Some time afterwards, finding
two species in the collection of Mr. Nuttall, upon which he had established a new
von. n.—13