Suborders And Tribes Part 14 868 ; involucre hemispherical, of equal scales; receptacle subalveolate, conical; pappus none. - Low herbs, either (1) and caulescent or Ц and acaulescent. Hds. solitary.

1 B. integrifdlia Mx. Annual, diffusely branched; lvs. entire, spatulate-obovale, upper oblong-lanceolate, sessile; scales lance-ovate, setaceous-acuminate, with scarious margins. - Wet prairies, Ky. to Tex. Sts. 6 to 12'. Rays violet-purple, in hds. similar to the next. Mar. - May.

2 B. perennis L. Perennial; root creeping; scape naked, single-flowered; lvs. obovate, crenate.- Ц Native of England and other parts of Europe, nearly naturalized in some parts of N. England in cultivated grounds. Scape 3 or 4' high, with a single white head which is single, double or quilled in the different varieties. Blossoms in the spring and summer months.

23. DAHLIA, L. (In honor of Andrew Dahl, a Swedish botanist, pupil of Linnaeus.) Heads many-flowered, rays $, diskSuborders And Tribes Part 14 869 : involucre double, the outer series of many distinct scales, the inner of 8 scales united at base ; receptacle chaffy; pappus none. - Ц Splendid Mexican herbs. Lvs. pinnate, opposite.

1 D. variabilis Desf. St. green ; rachis of the lvs. winged; Ifts. ovate, acuminate, serrate, puberulent or nearly smooth; outer invol. reflexed ; ray fls♀ . , sterile or fertile. - These superb and fashionable plants are natives of sandy meadows in Mexico. They have coarse and roughish lvs. resembling those of the common elder, but the flowers are large and beautiful, sporting into innumerable varieties, single and double, of every conceivable shade of scarlet, crimson, purple, red, rarely yellow, blooming from July until arrested by frost

2 D. coccinea Cav. St. frosty, or hoary, hollow; lvs. with the rachis naked; Ifts. roughish beneath; outer invol. spreading; rays neuter. - Stems about 4f high. Foliage rather glaucous. Rays scarlet, saffron-color or yellow, never purple or white. - The Dahlias are generally cultivated by the divisions of the tuberous roots, which, as soon as the frost blackens the tops, are to be taken up and preserved through the winter in a dry place, free from frost.

24. B0LT0'NIA, L'Her. (To J. B. Bolton, author of "Ferns of Great Britain," etc, 1788.) Hds. many-flowered ; ray-flowers ?, in a single series, those of the disk tubular,Suborders And Tribes Part 14 870 ; scales in 2 series, appressed, with membranous margins; receptacle conic, punctate; achenia flat, 2 or 3-winged; pappus of minute setae, 2 (to 4) of them usually lengthened into awns. - Ц Glabrous, branching herbs. Lvs. lanceolate, entire, sessile. Hds, loosely corymbous. Rays purplish-white.

1 B. glastifolia L'Her. Lvs. linear-lanceolate, narrowed to the base, the lowest serrate; hds. in a loose paniculate corymb; fr. obovate, with 2 awns, and several minute setae between. - Prairies, etc. West and South. Very slender, 3 - 7f. high, strict Lvs. 3 - 5' long. Rays pale, spreading 7 - 9". Jl - Aug.

2 B. decurrens. Lvs. oblong, margins decurrent on the winged stout stem ; hds. corymbous, globular in fruit; ach. as in No. 1 ; rays purple. Bottoms W.

3 B. diffusa Ell. Lvs. linear-lanceolate and linear-subulate, all entire; hds. small, in a diffuse panicle with very numerous and slender branchlets; ach. obovate, narrowly winged, with 2 awns less than half its length, and several very minute setae between. - Ga. to La., common. A very slender and diffusely branched plant, 3 to 7f high. Rays spreading about 5". Aug. - Oct.

4 B. asteroides L'Her. Lvs. lanceolate, all entire; hds. in a somewhat condensed corymb, on long peduncles; branches leafy; ach. broadly oval, smooth, with 4 to 5 minute seta;, none of them produced into awns. - Margins of swamps, Penn. to Ga. Plant 1 to 3f high. Rays 13 to 20, spreading 6 to 7". Aug., Sept.

25. BRACHYCHae' TA, Torr. etc Gr. False Solidago. (Gr.Suborders And Tribes Part 14 871 short, Suborders And Tribes Part 14 872 , hair; in reference to the pappus.) Heads few-flowered; rays 4 or 5,♀ , ligulate ; disk-flowers 4 or 5, Suborders And Tribes Part 14 873 , tubular; involucre cylindric, imbricate; receptacle naked; pappus a single row of scalelike bristles shorter than the obconic achenium. - Ц Habit that of a Solidago. The golden yellow heads arranged in little clusters, forming one or several unilateral, recurved racemes.

B. cordata Torr. & Gr.. Woods, E. Ky. (near Cumberland Gap) to Ga., along the mts. St. 2 to 4f high, simple or with several branches above, pubescent. Lvs. alternate, cordate, ovate, acute or acuminate, the lower petiolate, more or less cordate, serrate, the upper entire, sessile. Heads small (3" long), in 1 (or more) long, recurved, nearly leafless, interrupted rac. Aug. - Oct

26. SOLIDA'GO, L. Goldenrod. (Lat. solidari, to unite; from the vulnerary qualities of the plants.) Flowers of the ray about 5,♀,remote ; of the diskSuborders And Tribes Part 14 874 ; involucre oblong, imbricate, with appressed scales ; receptacle punctate, narrow ; pappus simple, capillary, scabrous. - Ц Herbs, very abundant in the U. S. St. erect, branching near the top. Lvs. alternate. Hds. small, with 1 to 15 (very rarely 0) small rays. Fls. vellow (one species whitish), expanding in the autumnal months.

a Shrub 1 to 3f high. Rays 1 to 3. Southern..........................................................

.......NO.1

a Herbaceous ; heads without rays , - discoid......................................................

..Nos.2,3

a Herbaceous ; heads radiate, rays, 1 to 15, usually small, (b)

b Scales of the involucre with recurved, herbaceous tips....................................

...Nos. 4,5

b Scales imbricated, erect, scarious, seldom herbaceous, (c)

C Rays white or cream-coloured. Clusters axillary and terminal...........

No. 6

C Kays golden yellow, (d)

d Inflorescence axillary (chiefly), in clusters or short racemes, (e)

e stems pubescent..................................................................

Nos. 7,8,

e stems glabrous....................................................................

...Nos. 8, 9

d Inflorescence terminal, virgate or paniculate, (f)

f Clusters or rac. erect, not secund. Lvs. feather-veined, (g)

g Heads large, with loose scales. Alpine plants...................

.Nos.10-12

g Heads not large. Plants glabrous. Kays 4 to 7...........

Nos.13 - 15

g Heads not large. Plants soft-downy. Kays 9 to 12........

.Nos. 16, 17

t Clusters or racemes recurved and secund (one-sided), (h)

h Leaves 3 (or l)-veined. Very smooth, salt-marsh herbs....

.Nos. 18, 19

h Leaves evidently 3-veined. Herbs inland, etc. (k.)

k Leaves entireor very nearly so.....................................

Nos 20, 21

k Leaves serrate, Stem smooth and glabrous..................

.Nos.22-24

k Leaves serrate Stem rounghish-pubscent.....................

Nos. 25, 26

h, Leaves not veiny, thick, subentire. Herbs inland.........

Nos. 27 - 29

h Leaves evidently feather-veined, mostly serrate, (ra)

m Stem hairy or downy. Leaves rouirh or not..........

Nos. .30 - 32

m Stem glabrous. Leaves glabrous or not. Ray 2 to 5

Nos.33 - 35

m Stem glabrous. Lvs. glabrous or not. Rays 6 to 12.

n Racemes distant, loosly if at all panicled......

..Nos.36,37

n Racemes close

.Nos. 38 - 40

d Inflorescence terminal, in a fastigiate corymb, (o)

o Leaves lanceolate, ample. Stem smooth, glabrous....

, ,Nos. 41, 43

o Leaves lanceolat, ample. Stem rough, pubescent...

, .Nos. 43 - 46

O Leaves linear. Heads small, scales close- pressed....

. , Nos. 47, 48

1 S. pauciflosculosa Mx. Shrub, much branched, glabrous, glaucous and somewhat viscid; lvs. somewhat lanceolate and linear, obscurely 3-veined, obtuse, sessile, entire; panicle compound, of erect racemes; hds. 5 to 7-flowered, with 1 to 3 large rays. - S. Car. to Fla., barrens near the coast. A low bush, about 2f high, remarkably distinguished among our Solidagos as a shrub. Lvs. 1 to 2' long, leathery. Ray, usually solitary. Aug. - Oct.