Ageratina chiriquensis (B.L.Rob.) R.M.King & H.Rob.

Species

Angiosperms > Asterales > Asteraceae > Ageratina

Characteristics

Small shrub to 0.5 m tall, with many branches; stems pale to dark brownish, terete, puberulous, the internodes usually short. Leaves opposite; blades narrowly ovate, papyraceous, to 2-3 mm long and 1.4 mm wide, the base rounded, the margins serrate, the apex acute, the upper surface glabrous, the lower surface slightly paler, sparsely puberulous on veins, the veins somewhat trinervate from near the base; petioles mostly 1-2 mm long. Inflorescence corymbose, the ultimate branches 3-7 mm long, usually densely stipitate-glandular. Heads 5-7 mm high with ca. 26 florets; involucral bracts ca. 20, eximbricate, biseriate, narrowly oblong to linear, mostly 3.5-5.5 mm long, bicostate, the apices obtuse to sharply acute, the outer surface with scattered short-to long-stipitate glands; corolla white to pale lavender, 4.0-4.5 mm long, the tube slender, 1.5-2.0 mm long, glabrous, the limb cylindrical to narrowly campanulate, the lobes short-triangular, 0.5-0.7 mm long, glabrous on inner surface and with few to many hairs on outer surface; anther thecae ca. 1 mm long. Achenes fusiform, 1.7-2.0 mm long, with few to many short bristles mostly on the ribs; carpopodium cylindrical with mostly oblong cells; pappus bristles ca. 20, rather fragile at base, mostly 3.5-4.0 mm long, slightly broadened distally, often with partial series of much shorter bristles.
Life form perennial
Growth form
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.5
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Environment

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Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

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Distribution

Ageratina chiriquensis world distribution map, present in Panama

Identifiers

LSID urn:lsid:ipni.org:names:6864-2
WFO ID wfo-0000004212
COL ID 5TRVK
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Eupatorium chiriquense Ageratina chiriquensis