260 COMPOSIT.E. (fOMl'OSITK FAMILY.) 



63. BALDWINIA, Hll. 



Ilcails niaiiy-flowereil, gloljose in fruit; ilie ray Howe rs 20-30, neutral, 

 3-tootheil at the apex; tube of tlieilisk tiowers dilated and indurated. Scales 

 of the involucre short, fleshy, imbricated in about 4 rows. Iiecej)tacle deeply 

 alveolate; the 5-6-angled cells with entire margins, enclosing the slender 

 obcouiciil hairy achenia. Pappus of 7-9 oblong nerveless chafly scales, as 

 long a.« the achenia. — An erect puberulent mostly simple perennial herb, 

 with alternate Hesliy entire linear or (the lowest) spatulate leaves, and a 

 solitary head of yellow Howers on a long peduncle. 



1. B. uniflora, Kll. — Low pine barrens, Florida to North Carolina, and 

 westward. Se])t. — Stem 2''-3^ '"nli- Heails large. — Dr. Curtis fin<ls a 

 form with the disk flowers dark purple. The rays are also sometimes tubular. 



64. ACTINOSPERMUM, Kll. 



Scales of the involucre iu about 2 rows, lanceolate, setaceously acuminate. 

 Margins of the cells of the recei)tacle cusjiidate-toothcd. Achenia radiate at 

 the summit. Pappus a row of 12 short roundish entire scales. Otherwise 

 like Baldwinia. — A slender brandling annual. Leaves alternate, linear, 

 fleshy. Heads of yellow flowers showy, terminating the peduude-like summit 

 of the brandies. 



1. A. angustifolium, Torr. & Gray. (Baldwinia multiflora, A^»^/.) — 

 Dry sandy ridge.'i in tlie ])iiie barrens, Florida and (Jeorgia. Sept. — Stem 

 l°-2° high, smooth. Leaves very numerous, sprinkled with jointed hairs. 



65. MAESHALLIA, Schreb. 



Heads many-flowered ; the flowers all tubular and perfect. Corolla pu- 

 bescent, with linear spreading lobes. Scales of the involucre obloug-liuear 

 or lanceolate, in 1-2 rows. ChalT of the convex or conical receptacle narrow- 

 linear, rigid. Achenia oblong, narrowed downward, .5 angled, mostly hairy. 

 Papjnis of .5 - 6 ovate or triangular acuminate entire niemliranaceous scales. 

 — Perennial herbs, with simple and scajie-like or branching stems, smooth 

 entire 3-uerved alternate leaves, and a solitary head of white or purplish 

 flowers terminating the stem or branches. Anthers blue. 



1. M. latifolia, I'ursh. Stem leafy, simple, or sparingly branched 

 above ; leaves ovate-lanceolate, acuminate ; scales of the involucre acute ; 

 achenia smooth. — Dry soil, in the upper districts. May -June — Stem 

 1° high. 



2. M. lanceolata, Pursh. Stem naked above, simple, pubescent; leaves 

 lanceolate, obtuse ; the lowest spatulate ; scales of the involucre olituse ; 

 achenia ])ubescent. — Var. platvphvlla, Curtis. Stem leafy to the middle ; 

 leaves longer and broader, the lowest long-petioled. — 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, 

 puberulent above ; leaves linear, acute, the lowest spatulate ; scales of the 



