WorldFloraDB - Croptilon hookerianum

Characteristics

Stems erect, 20–80(–120) cm. Cauline leaf blades lanceolate to linear, reduced distally (becoming bractlike near heads), margins usually serrate apically, rarely entire. Peduncles stipitate-glandular, sometimes hispid as well. Involucres campanulate, (3.5–)5–8(–10) mm diam. Ray florets (10–)13–21(–29); corolla laminae 6–12 mm. Disc florets (20–)33–70(–108). 2n = 10, 12, 14.

Life form

annual

Growth form

herb

Growth support

free-standing

Foliage retention

-

Sexuality

hermaphrodite

Pollination

-

Spread

-

Mature width (meter)

-

Mature height (meter)

0.2 - 0.8

Root system

-

Rooting depth (meter)

-

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

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

Distribution

Identifiers

LSID	urn:lsid:ipni.org:names:69649-2
WFO ID	wfo-0000081670
COL ID	ZLHS
BDTFX ID	-
INPN ID	-
Wikipedia (EN)	Link
Wikipedia (FR)

Synonyms

Isopappus hookerianus Croptilon hookerianum Haplopappus divaricatus var. hookerianus Haplopappus validus subsp. torreyi Croptilon divaricatum var. hookerianum Croptilon hookerianum var. hookerianum

Lower taxons

Croptilon hookerianum var. validum Croptilon hookerianum var. graniticum

WorldFloraDB 2024

Croptilon hookerianum (Torr. & A.Gray) House

Hooker's scratchdaisy (en)

Species

Angiosperms > Asterales > Asteraceae > Croptilon