Bidens hyperborea Greene

Estuary beggarticks (en)

Species

Angiosperms > Asterales > Asteraceae > Bidens

Characteristics

Annuals, (5–)10–30(–70+) cm. Leaves sessile or petioles 5–25 mm (± winged); blades oblanceolate to linear, 15–40(–100+) × (3–)6–10(–15+) mm, bases cuneate, margins entire or ± serrate, sometimes ciliate, apices rounded or obtuse to attenuate, faces glabrous. Heads borne singly or in 2s or 3s. Peduncles 10–60 mm. Calyculi of 2–3(–9) erect, oblanceolate to lance-linear (± foliaceous) bractlets or bracts (6–)10–20(–75+) mm, margins usually ciliolate, abaxial faces glabrous. Involucres usually ± campanulate to cylindric, sometimes ± hemispheric, 5–7(–9) × (4–)7–10 mm. Phyllaries 6–8(–12), oblong, 6–11 mm (tips usually yellow, as are tips of paleae). Ray florets 0 or 3–7; laminae pale yellow, 4–12 mm. Disc florets 15–30(–60); corollas yellow (often orange-tipped), 3–4 mm. Cypselae blackish to olive, flattened, narrowly cuneate, outer 4–9 mm, inner 5–10 mm, margins retrorsely barbed, apices ± truncate to convex, faces ± 1-nerved, ± striate, glabrous; pappi of (2–)3–4 ± erect, retrorsely barbed awns 2–5 mm.
More
Annual 1–7 dm, glabrous or the stem scabrous-hispid; lvs oblanceolate to narrowly lance-elliptic or narrowly oblong, not ciliate, sessile except sometimes the lower, acute to more often acuminate, 2–10 cm × 3–10 mm, with a few small teeth or subentire; heads erect or occasionally nodding, discoid or with rays to nearly 1 cm, narrow, campanulate or turbinate, the disk 5–15 mm wide; outer invol bracts 4–8, leafy, ascending-erect, lance-linear, 1.5–4 cm; disk-corollas (3)4(5)-lobed; anthers included; achenes narrowly cuneate, flat or nearly so, blackish, coarsely striate, 4–7 mm, the summit finally cartilaginous and somewhat convex; pappus of 2–4 retrorsely barbed awns; 2n=24, 36. Estuaries; Mass. (and reputedly N.Y.) to N.S. and Que.; James Bay. Aug., Sept.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 0.3
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 -

Images

Bidens hyperborea unspecified picture

Distribution

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

Conservation status

Bidens hyperborea threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:32480-2
WFO ID wfo-0000027691
COL ID 68K2X
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Bidens colpophila Bidens hyperborea Bidens hyperborea var. colpophila Bidens hyperborea var. hyperborea Bidens hyperborea var. svensonii Bidens hyperborea var. cathancensis Bidens hyperborea var. arcuans