COMPOSITA. (COMPOSITE FAMILY.) 241 
62. ACTINOSPERMUM, Ell. 
Scales of the involucre in about 2 rows, lanceolate, setaceously acuminate. 
Margins of the cells of the receptacle cuspidate-toothed. Achenia radiate at the 
summit, Pappus a row of 12 short roundish entire scales. Otherwise like Bald- 
winia. — A slender branching annual. Leaves alternate, linear, fleshy. Heads 
of yellow flowers showy, terminating the peduncle-like summit of the branches. 
1. A. angustifolium, Torr. & Gray. (Baldwinia multiflora, Nutt.) — 
Dry sandy ridges in the pine barrens, Florida and Georgia. Sept. — Stem 
1?-2? high, smooth. Leaves very numerous, sprinkled with jointed hairs. 
63. MARSHALLIA, Schreb. 
Heads many-flowered ; the flowers all tubular and perfect. Corolla pubescent, 
with linear spreading lobes. Scales of the involucre oblong-linear or lanceolate, 
in 1-2 rows. Chaff of the convex or conical receptacle narrow-linear, rigid. 
Achenia oblong, narrowed downward, 5-angled, mostly hairy. Pappus of 5-6 
ovate or triangular acuminate entire membranaceous scales. — Perennial herbs, 
with simple and scape-like or branching stems, smooth entire 3-nerved alternate 
leaves, and a solitary head of white or purplish flowers terminating the stem or 
branches. Anthers blue. 
l. M. latifolia, Pursh. Stem leafy, simple or sparingly branched above ; 
leaves ovate-lanceolate, acuminate; scales of the involucre linear-lanceolate, 
acute; achenia smooth. — Dry soil, in the upper districts. May and June, — 
Stem 1° high. 
2. M. lanceolata, Pursh. Stem naked above, simple, pubescent; leaves 
lanceolate, obtuse ; the lowest spatulate; scales of the involucre oblong-linear, 
Obtuse; achenia pubescent. — Var. PLATYPHYLLA, Curtis. Stem leafy to the 
middle; leaves longer and broader; the lowest (5'—6/) on long and slender 
petioles, — Dry open woods, Florida to North Carolina, and westward ; the 
Variety in the upper districts. April-June. — Stem 6! —- 12! high. Leaves 
2/-3! long. 
3. M. angustifolia, Pursh. Stem simple or branched, leafy below, pu- 
berulent above ; leaves linear, acute, the lowest spatulate ; scales of the involu- 
cre linear and acute; disk at length ovate or oblong; achenia with hairy angles. 
io" pine barrens, Florida to North Carolina. July and Aug.— Stem 2°-3° 
64. MARUTA, Cass. May-weep. 
Heads many-flowered ; the rays neutral. Scales of the hemispherical involu- 
cre imbricated in few rows, shorter than the disk. Receptacle conical, chaffy 
throughout, or only at the summit. Achenia obovoid, ribbed, smooth. Pappus 
none. — Branching annuals. Leaves alternate, thrice pinnately divided. Heads 
Solitary, terminal. Rays white. ah 
 ,L M. Cotula, DC. Stem 1° high; divisions of the leaves linear; scales — 
Waste places. Introduced. May and June, — = 
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