Part 100 (1/2)

A. aNNUA, L. Tall, much branched; leaves 2-pinnately divided, the oblong segments deeply pinnatifid; heads small, in a loose ample panicle.--Ind.

to Kan. (Nat. from Old World.)

-- 3. _Receptacle hairy; flowers all fertile, the marginal ones pistillate._

A. ABSiNTHIUM, L. (WORMWOOD.) Rather shrubby (2--3 high), silky-h.o.a.ry; leaves 2--3-pinnately parted, lobes lanceolate; heads hemispherical, panicled.--Roadsides, escaped from gardens. (Adv. from Eu.)

11. A. frigida, Willd. Low (6--20' high), in tufts, slightly woody at the base, white-silky; leaves pinnately parted and 3--5-cleft, the divisions narrow-linear; heads globose, racemose.--Dry hills and rocks, Sask. to Minn., W. Tex., and westward.

72. TUSSILaGO, Tourn. COLTSFOOT.

Head many-flowered; ray-flowers in several rows, narrowly ligulate, pistillate, fertile; disk-flowers with undivided style, sterile.

Involucre nearly simple. Receptacle flat. Achenes cylindrical-oblong; pappus copious, soft and capillary.--A low perennial, with horizontal creeping rootstocks, sending up simple scaly scapes in early spring, bearing a single head, and producing rounded-heart-shaped angled or toothed leaves later in the season, woolly when young. Flowers yellow.

(Name from _tussis_, a cough, for which the plant is a reputed remedy.)

T. FaRFARA, L.--Wet places, and along brooks, N. Eng., N. Y., and Penn.; thoroughly wild. (Nat. from Eu.)

73. PETASTES, Tourn. SWEET COLTSFOOT.

Heads many-flowered, somewhat dicious; in the substerile plant with a single row of ligulate pistillate ray-flowers, and many tubular sterile ones in the disk; in the fertile plant wholly or chiefly of pistillate flowers, tubular or distinctly ligulate. Otherwise as Tussilago.--Perennial woolly herbs, with the leaves all from the rootstock, white-woolly beneath, the scape with sheathing scaly bracts, bearing heads of purplish or whitish fragrant flowers, in a corymb. (The Greek name for the coltsfoot, from p?tas??, a broad-brimmed hat, on account of its large leaves.)

[*] _Pistillate flowers ligulate; flowers whitish._

1. P. palmata, Gray. Leaves rounded, somewhat kidney-form, palmately and deeply 5--7-lobed, the lobes toothed and cut. (Nardosmia palmata, _Hook._)--Swamps, Maine and Ma.s.s. to Mich., Minn., and northwestward; rare. April, May.--Full-grown leaves 6--10' broad.

2. P. sagittata, Gray. Leaves deltoid-oblong to reniform-hastate, acute or obtuse, repand-dentate.--N. Minn. and westward.

[*][*] _Ligules none; flowers purplish._

P. VULGaRIS, Desf. Rootstock very stout; leaves round-cordate, angulate-dentate and denticulate.--About Philadelphia. (Nat. from Eu.)

74. aRNICA, L.

Heads many-flowered, radiate; rays pistillate. Scales of the bell-shaped involucre lanceolate, equal, somewhat in 2 rows. Receptacle flat, fimbrillate. Achenes slender or spindle-shaped; pappus a single row of rather rigid and strongly roughened-denticulate bristles.--Perennial herbs, chiefly of mountains and cold northern regions, with simple stems, bearing single or corymbed large heads and opposite leaves.

Flowers yellow. (Name thought to be a corruption of _Ptarmica_.)

1. A. Chamissnis, Less. Soft-hairy; _stem leafy_ (1--2 high), bearing 1 to 5 heads; _leaves thin, veiny_, smoothish when old, toothed; the upper _ovate-lanceolate_, closely sessile, the lower narrower, tapering to a margined petiole; scales pointed; pappus almost plumose. (A.

mollis, _Hook_.)--N. Maine, mountains of N. H. and northern N. Y., sh.o.r.es of L. Superior, and westward. July.

2. A. nudicaulis, Nutt. Hairy and rather glandular (1--3 high); _leaves thickish, 3--5-nerved, ovate or oblong_, all sessile, mostly entire and near the root, the _cauline small_ and only one or two pairs; heads several, corymbed, showy.--Damp pine barrens, S. Penn. and southward.

April, May.

75. SENeCIO, Tourn. GROUNDSEL.

Heads many-flowered; rays pistillate, or none; involucre cylindrical to bell-shaped, simple or with a few bractlets at the base, the scales erect-connivent. Receptacle flat, naked. Pappus of numerous very soft and slender capillary bristles.--Herbs, in the United States, with alternate leaves and solitary or corymbed heads. Flowers chiefly yellow.