3 B. glomeruliflora Pers. Glabrous, minutely scurfy; lvs. all obovate tapering to a short petiole, very obtuse, repand-few-toothed ; hds. in sessile glomertdes, in the axils of the upper lvs. - Va. to Fla. and La., along the coast St. 3 to of high, pale green as well as the whole plant Lvs. 1 to 2' long, § as wide. Hds. thrice larger (3" long and wide) than in No. 1. Sept. - Nov.
Tribe 4. SENECIONIDae
36. PTEROCAITLON, Ell. Black-root. (Gr. ,awing, a stem ; i. e., a winged stem.) Heads many flowered, the fertile flowers ♀ in several rows, the sterile flowers central (! ), mostly ; scales .imbricated, caducous with the fruit, ♀ corollas 3-toothed, 5-cleft; acheuia angular, hispid ; pappus of equal capillary bristles longer than the involucre. - Ц Rhizome tuberous. Lvs. alternate, very densely tomentous beneath, decurrent into the wings of the stem. Hds. sessile, densely crowded into a woolly terminal spike. (Conyza, Mx.)
P. pyonostachyum Ell. St simple; lvs. lanceolate, finely serrulate, smooth above; spike continuous. - Sandy soils, S. Car. to Fla. A curious plant, 2 to 3f high. Lvs. a finger's length, dark green above, creamy-white beneath, as are also the wings of the stem. Spike 2 to 3' long. May - Aug.
37. BORRICH'IA, Adans. Sea Ox-eye. (Dedicated to Olof Borrich, a Danish botanist.) Heads radiate, many-flowered ; rays ♀, fertile; scales imbricated, the outer leafy ; receptacle flat, chaffy, the chaff rigid, persistent; achenia 4-angular, crowned with a 4-toothed pappus. -Shrubby maritime plants with opposite lvs. and solitary, yellow hds. (Buphthalmum, L.)
B. frutescens DC. Minutely canesccnt downy; lvs. laneeolate and oblanceolat obscurely repand-toothed, slightly connate at base, chaff of the recept. cuspidate with a rigid point. - Va. to Fla. St. 1 to 3f high. Lvs. 2 to 3' long, rounded at the end (with a cuspidate point), varying to linear, the upper alternate. Jn.- Oct.
38. ECLIP TA, L. Head many-flowered ; ray fls. ♀ numerous narrow ; disk tubular, mostly 4-toothed ; scales 10 - 12, in 2 rows, leafy, lance-ovate; receptacle flat; chaff bristly ; achenia somewhat angular or 2-edgcd ; pappus 0. - (1) Herbs strigose with rigid hairs, erect or procumbent. Lvs. opposite. Heads axillary and terminal, solitary. Fls. white. (Fig. 328.)
E. erecta L. St. often decumbent; lvs. lanceolate or lance-oblong, tapering to each end, subserrate; ped. longer than the heads; scales or leaves of the involucre acuminate. - Damp soils, Md., Ohio, and I11., S. to Flor. Stem often rooting at the lower joints, 1 - 3f long, with an elastic, thread-like fiber. Leaves 1 to 2' long, rough, obscurely tripli-veined. Heads small, with minute flowers and short rays. The juice turns black, and is said to dye wool black. Jn. - Sept (E. procumbens and brachipoda, Mx.)
39. POLYM'NIA, L. Leaf-cup. (The name of one of the ancient Muses; why applied to this plant is not obvious.) Heads radiate. Involucre double, outer of 4 or 5 large, leafy scales, inner of about 10 leaflets, concave ; ray-flowers pistillate, few ; disk sterile ; receptacle chaffy ; pappus none. - Ц Clammy herbs. Lvs. opposite. Fls. yellow.
1 P. Canadensis L. Viscid-villous; lvs. denticulate, petiolate, acuminate, lower pinnatifid, upper 3-lobed or entire, rays shorter than tlie invol. - A coarse, broad-leaved, hairy-viscid plant, 3 - 5f high, Can., N. Y. to III., and the mts. of Car.
Stem with opposite leaves and spreading branches. Flowers light-yellow, the rays short, surrounded by the concave leaflets of the double calyx in such a manner as to form a sort of cup, hence called Leaf-cup. Leaves feather-veined, 3 - 8' long, and nearly as wide, lobes deeply divided and acuminate. Heads 1/2'diam. June.
2 P. uvedalia L. Hairy and rough, stout; lvs. 3-lobed, acute, decurrent into the petiole, lobes sinuate-angled; rays 7 to 12, much longer than the involucre.-^-In highland woods. Stem 3 - 6f high. Lower leaves very large. Flowers large, yellow, the rays oblong, obtuse. Jl. - Neither of these plants has been found in N. Eng., and they are rare in N. Y., but not uncommon in the W. and S. W. States.
40. CHRYSOG'ONUM, L. (Gr. ,gold, , knee; the golden .flowers at the joints.) Heads many-flowered, radiate ; rays about 5, ♀, fertile, disk but sterile \ scales in 2 rows of about 5 each, the outer leafy, the inner chaffy; receptacle flat, chaffy; achenia of the ray ob-compressed, obovate, each embraced by a chaff-scale; achenia of the disk abortive; pappus a small, 2 to 3-toothed crown. - Ц A little prostrate herb, with opposite lvs. and solitary, pedunculate, bright yellow vernal fls.
C. Virginiarmm L. - In rich shady soils, Md. to HI., common southward to the Gulf. One of the earliest flowers of spring. Plant flat on the ground, hirsute, at first acaulescent, at length caulescent and ascending. Lvs. ovate, tapering to a petiole, crenate. Rays expanding 7 to 9 '. Feb. - May.