All Floras      Advanced Search
FNA Vol. 20 Page 36, 37 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 20 | Asteraceae | Laennecia

2. Laënnecia filaginoides de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 376. 1836.

Conyza filaginoides (de Candolle) Hieronymus

Annuals, 10–30+ cm. Leaf blades: bases obscurely, if at all, clasping, faces densely to loosely tomentose (at least abaxially, sometimes glandular beneath tomentum); proximal narrowly obovate or oblanceolate to linear, 10–30 × 1–5 mm, often obscurely pinnately lobed or toothed; distal similar, smaller, entire or distally toothed. Heads in ± racemiform arrays (on main and lateral stems). Involucres 3.5–4.5 mm. Receptacles 1.5–2.5 mm diam. Pistillate florets 20–40+; corollas: lengths ± 1 / 2 styles, laminae 0. Disc florets 3–10. Cypselae purplish, 1.3–1.5 mm, densely sericeous (hairs 0.3–0.5 mm), sometimes glandular near apices; pappi of 30–40+ white bristles in 2 series, outer ± persistent, 0.8–1 mm, inner persistent or ± fragile, 2–3 mm. 2n = 18.

Flowering late summer–fall. Disturbed sites, openings in pine and oak forests; 1800–2300 m; Tex.; Mexico.


 

Related Objects  
  • Distribution Map
  • Map

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |