Cosmos parviflorus (Jacq.) Pers.

Southwestern cosmos (en)

Species

Angiosperms > Asterales > Asteraceae > Cosmos

Characteristics

Plants 30–90 cm, glabrous or sparsely pubescent. Leaves: petioles ca. 0.5 cm; blades 2.5–6.5 cm, ultimate lobes to 1 mm wide, margins usually spinulose-ciliate, apices acute to obtuse. Peduncles 10–30 cm. Calyculi of spreading to reflexed, linear-oblong to narrowly lanceolate bractlets 6–9 mm, apices acute. Involucres (3–)5–10(–15) mm diam. Phyllaries erect, oblong, 5–8 mm, apices acute. Ray corollas white to rose-pink or violet, laminae cuneate-obovate, 5–9 mm, apices dentate. Disc corollas 4–5 mm. Cypselae 9–16 mm, setulose; pappi of 2–4 erect awns 2–3 mm. 2n = 24.
More
A small plant. It grows 50-75 cm high. It branches several times in the upper half. The leaves are threadlike. They are divided 2 or 3 times. There is a single flower head at the end of each stalk. It has 5 orchid ray flowers with yellow centre.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.9
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a temperate plant. It grows in gravelly soil up to 2,500 m altitude in Texas.
Light 7-9
Soil humidity 3-7
Soil texture 1-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 7-11

Usage

The leaves are eaten raw when young.
Uses medicinal
Edible leaves
Therapeutic use Ceremonial Medicine (leaf)
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 5 - 10
Germination temperacture (C°) 20 - 30
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Cosmos parviflorus world distribution map, present in Mexico and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:198306-1
WFO ID wfo-0000013440
COL ID 6B7NG
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Bidens humboldtii Coreopsis parviflora Cosmos parviflorus Cosmea parviflora