Bidens heterodoxa Fernald & H.St.John

Connecticut beggarticks (en)

Species

Angiosperms > Asterales > Asteraceae > Bidens

Characteristics

Annuals, (5–)25–35(–55+) cm. Leaves: petioles (narrowly, if at all, winged) 5–20(–35+) mm; blades lanceolate to lance-linear, (20–)30–50(–80+) × (3–)6–20(–30+) mm, sometimes laciniately 1-pinnatisect with 2–4+ lobes near bases, bases cuneate, margins incised to serrate, seldom ciliate, apices acute to attenuate, faces glabrous. Heads borne singly or in 2s or 3s. Peduncles 10–35(–55) mm. Calyculi of (2–)3–5(–7) ± erect, oblanceolate or spatulate to linear, ± foliaceous bractlets or bracts (6–)10–25(–40+) mm, margins rarely ciliate, abaxial faces usually glabrous, sometimes sparsely hispidulous. Involucres usually obconic to broadly campanulate, rarely hemispheric, (4–)6–7 × (4–)5–7 mm. Phyllaries (4–)5–8, oblong to lance-ovate, (4–)5–8+ mm. Ray florets usually 0, sometimes 1–3+; laminae orange yellowish, 2–5(–10) mm. Disc florets (7–)20–70+; corollas yellowish, 2.5–3.5 mm. Cypselae: outer red-brown, ± flattened, sometimes 3–4-angled, broadly cuneate, 4–5(–6) mm, inner blackish, narrowly cuneate, (5–)6–7(–8+) mm, margins glabrous or sparsely antrorsely strigillose, apices ± truncate to convex, faces ± 1-nerved, glabrous or sparsely setulose, usually smooth, sometimes ± tuberculate; pappi 0, or of 2(–4) spreading to divergent, antrorsely or retrorsely barbed awns (0.1–)1–3.5+ mm. 2n = 48.
More
consists of a series of rare and local coastal and subcoastal populations from Conn. to Que., to some extent estuarine, approaching B. eatonii in achenes and pappus(variously antrorsely or retrorsely barbed or barbless) but with broader, more numerously fld heads as in B. connata. The proper taxonomic status of these plants is uncertain.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.25 - 0.35
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 5-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

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

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Bidens heterodoxa world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:32462-2
WFO ID wfo-0000085574
COL ID 68JQR
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Bidens heterodoxa Bidens infirma Bidens tripartita var. heterodoxa Bidens heterodoxa var. atheistica Bidens heterodoxa var. monardifolia Bidens heterodoxa var. heterodoxa Bidens heterodoxa var. orthodoxa Bidens heterodoxa var. agnostica