WorldFloraDB - Rudbeckia amplexicaulis

Characteristics

Leaf blades 3–15 × 0.5–4 cm. Involucres 1–4 cm diam. Phyllaries spreading to reflexed, green, linear to lanceolate, herbaceous. Ray laminae spreading, eventually reflexed, elliptic to obovate, 12–30 × 7–15 mm, abaxially hirsute. Disc corollas 2.8–3.5 mm. Cypselae: each face 4–5-striate and minutely cross-rugose, glabrous; pappi 0 (cypselae each with ring of tan tissue at apex, ca. 0.1 mm). 2n = 32.

Life form

annual

Growth form

herb

Growth support

-

Foliage retention

deciduous

Sexuality

hermaphrodite

Pollination

-

Spread

-

Mature width (meter)

0.1 - 0.5

Mature height (meter)

0.55 - 0.6

Root system

-

Rooting depth (meter)

0.2

Root diameter (meter)

-

Flower color

Blooming months

Jan	Feb	Mar
Apr	May	Jun
Jul	Aug	Sep
Oct	Nov	Dec

Fruit color

-

Fruiting months

-

Nitrogen fixer

-

Photosynthetic pathway

-

Environment

Light
Soil humidity
Soil texture
Soil acidity
Soil nutriment	-
Hardiness (USDA)

Usage

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

Cultivation

Can be grown by seedlings. Seeds needs stratification.

Mode	seedlings
Germination duration (days)	5 - 21
Germination temperacture (C°)	21
Germination luminosity	light
Germination treatment	stratification
Minimum temperature (C°)	-12
Optimum temperature (C°)	-
Size	-
Vigor	-
Productivity	-

Images

Leaf

Distribution

Identifiers

LSID	urn:lsid:ipni.org:names:241660-1
WFO ID	wfo-0000072191
COL ID	4TM9R
BDTFX ID	58558
INPN ID	119399
Wikipedia (EN)	Link
Wikipedia (FR)

Synonyms

Rudbeckia amplexicaulis Rudbeckia oppositifolia Dracopis amplexicaulis Rudbeckia heterophylla Rudbeckia spathulata

WorldFloraDB 2024

Rudbeckia amplexicaulis Vahl

Clasping coneflower (en), Rudbeckia (fr), Rudbeckie amplexicaule (fr), Rudbeckie à feuilles embrassantes (fr), Rudbeckia à feuilles embrassantes (fr)

Species

Angiosperms > Asterales > Asteraceae > Rudbeckia