Code
PTODE
Growth form
Broadleaf
Biological cycle
annual
Habitat
terrestrial
PTODE
Growth form
Broadleaf
Biological cycle
annual
Habitat
terrestrial
🗒 Synonyms
| synonym | Baccharis pterocaulon Bojer ex DC. |
| synonym | Conyza decurrens L. |
| synonym | Conyza glomerata Wall. ex Link |
| synonym | Gnaphalium decurrens L. |
| synonym | Jeffreya decurrens (L.) Cabrera |
| synonym | Monenteles pterocaulon DC. |
| synonym | Pterocaulon bojeri Baker |
| synonym | Pterocaulon decurrens (L.) S.Moore |
🗒 Common Names
| Malagasy |
|
📚 Overview
Description
Global description
Neojeffreya decurrens is an annual or biennial erect herb, becoming woody at the base, reaching up to 1 m in height. The stem and branches are completely grayish-pubescent, especially on the underside of the leaves. The leaves are simple, alternate, barely sinuate-serrated, sessile, decurrent in broad wings, uninterrupted along the stem. The lamina is oblong-sub-spatulate. The inflorescence is in capitulum, 8 to 10 mm in diameter, sessile, arranged along the branches in loose or compact leafy spikes. The fruits are oblong achenes, compressed, attenuated at both ends, pubescent.
Cotyledons
The cotyledons are small and hidden under the leaves in rosette.
First leaves
The first leaves are simple, alternate, oblong-spatulate, with more or less prominent veins, greyish pubescence, arranged in rosette at the soil surface.
General habit
Neojeffreya decurrens is an erect herbaceous plant, becoming woody at the base, 30 to 100 cm tall; plant entirely, with greyish pubescence, especially on the underside of the leaves.
Underground system
Taproot.
Stem
The stem and branches are erect, becoming woody at the base, 30 cm to 1 m high, fully-pubescent greyish.
Leaf
The leaves are simple, alternate, entire or with margin barely sinuate-serrated, sessile, with oblong-spatulate lamina, 1.5 to 4 cm long by 0.2 to 0.9 cm wide, up to 1.8 cm for the basal leaves. The base is decurrent along the stem in broad whole uninterrupted wings, the apex acute. Both sides are greyish-pubescent especially on the underside.
Inflorescence
The Inflorescence in capitulum: the very small elementary capitulums are associated with dense capitulums of 2nd order (glomeruli), sub-globular, 8 to 10 mm in diameter, sessile, arranged along the branches loose or compact leafy spikes. The subulate involucral bracts are extensively ciliated on the underside.
Flower
The corolla of female florets are filiform, finely serrated or truncated at the top; the corolla of bisexual florets are regular, with thin tube barely widened to the top, 5-serrated; Saggitate anthers, shortly bifid style, 1.8 to 2.5 mm long.
Fruit
The fruit is a small achene, oblong, compressed, attenuated at both ends especially at the base, pubescent.
Neojeffreya decurrens is an annual or biennial erect herb, becoming woody at the base, reaching up to 1 m in height. The stem and branches are completely grayish-pubescent, especially on the underside of the leaves. The leaves are simple, alternate, barely sinuate-serrated, sessile, decurrent in broad wings, uninterrupted along the stem. The lamina is oblong-sub-spatulate. The inflorescence is in capitulum, 8 to 10 mm in diameter, sessile, arranged along the branches in loose or compact leafy spikes. The fruits are oblong achenes, compressed, attenuated at both ends, pubescent.
Cotyledons
The cotyledons are small and hidden under the leaves in rosette.
First leaves
The first leaves are simple, alternate, oblong-spatulate, with more or less prominent veins, greyish pubescence, arranged in rosette at the soil surface.
General habit
Neojeffreya decurrens is an erect herbaceous plant, becoming woody at the base, 30 to 100 cm tall; plant entirely, with greyish pubescence, especially on the underside of the leaves.
Underground system
Taproot.
Stem
The stem and branches are erect, becoming woody at the base, 30 cm to 1 m high, fully-pubescent greyish.
Leaf
The leaves are simple, alternate, entire or with margin barely sinuate-serrated, sessile, with oblong-spatulate lamina, 1.5 to 4 cm long by 0.2 to 0.9 cm wide, up to 1.8 cm for the basal leaves. The base is decurrent along the stem in broad whole uninterrupted wings, the apex acute. Both sides are greyish-pubescent especially on the underside.
Inflorescence
The Inflorescence in capitulum: the very small elementary capitulums are associated with dense capitulums of 2nd order (glomeruli), sub-globular, 8 to 10 mm in diameter, sessile, arranged along the branches loose or compact leafy spikes. The subulate involucral bracts are extensively ciliated on the underside.
Flower
The corolla of female florets are filiform, finely serrated or truncated at the top; the corolla of bisexual florets are regular, with thin tube barely widened to the top, 5-serrated; Saggitate anthers, shortly bifid style, 1.8 to 2.5 mm long.
Fruit
The fruit is a small achene, oblong, compressed, attenuated at both ends especially at the base, pubescent.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
📚 Nomenclature and Classification
No Data
📚 Natural History
Life Cycle
Life cycle
Annual
There is content in another language. Please click here to read it. (Français)
Madagascar: Neojeffreya decurrens is a species of middle and end cycle; it flowers in the dry season (May-June).
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Cyclicity
There is content in another language. Please click here to read it. (Français)
Neojeffreya decurrens is an annual or biennial species; it multiplies only by seed. N. decurrens produces a large amount of small anemochorous seeds, spread by wind, animals and tillage tools.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Morphology
Growth form
Erected
Leaf arrangement
Alternate
Leaf type
Simple
Type of prefoliation
Leaf ratio medium
Narrow leaf
Latex
Without latex
Stem section
Round
Root type
Taproot
Hollow or solid stem
Solid stem
Stipule type
No stipule
Leaf attachment type
Decurrent leaf
Fruit type
Achene
Achene type
Achene without pappus
Lamina margin
largely dentate
hairy
undulate
Lamina apex
acute
Upperface pilosity
Less hairy
Upperface hair type
Wooly
Lowerface pilosity
Dense hairy
Lowerface hair type
Wooly
Simple leaf type
Lamina elliptic
Lamina section
embossed
Lamina Veination
in arc
Flower color
White
Inflorescence type
Glomerulate
Capitule with tubular flowers
Stem pilosity
Dense hairy
Stem hair type
Wooly
Life form
Broadleaf plant
Look Alikes
Distinctive characters of Neojeffreya decurrens (L.) Cabrera and Laggera crispata (Vahl.) Hepper & Wood
Both species are erect annual or biennial herbs, becoming woody at the base, with simple leaves, alternate, sessile, oblong, decurrent in large uninterrupted wings, more or less toothed margins. The following main characters distinguish them quite easily.
| young plant | adult | Inflorescence | Distribution and harmfullness in Madagascar | |
| Laggera crispata |
- entirely pubescent green; - oblong-elliptic leaf with apex subacute and attenuate base, light green uniform |
- stout plant with strong development, reaching more than 1 m high; - abundantly branched, leaves oblong - elliptic to lanceolate; - Finely toothed wings; - light green homogeneous. |
- flowers gathered in capitulum stalked +- tilted 10 to 15 mm in diameter and arranged in leafy panicles +- wide. - Flower heads surrounded by 4 or 5 rows of bracts. |
- generally scarce in annual crops. - Recorded especially on the Highlands and the Middle West above 800 m |
| Neojeffreya decurrens |
- pubescent – grayish; - leaves oblong-subspatulate often marked by the presence of a gray-brown spots at the base of the blade and wings. |
- medium size plant, from 30 cm to 1 m high, - +- branched, - leaves oblong - spatulate; - Slightly ondulate wings; - Especially hairy-gray on the underside. |
- flowers gathered in very small elementary capitulum arranged in glomeruls (2nd order capitulum) dense subglobose 8 to 10 mm in diameter, sessile, arranged along the branches in leafy spikes +- loose. |
- localy abundant in crops and new fallows. - present everywhere in more or less all climatic zones of Madagascar. |
Thomas Le Bourgeois, Randriamampianina Jean Augustin
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
Ecology
There is content in another language. Please click here to read it. (Français)
Central Africa: Neojeffreya decurrens grows in open, ruderal areas and fallow fields.
Comoros: Present
Madagascar: Neojeffreya decurrens grows on ferruginous soils, ferralitic soils, alluvial soils with light texture of medium to low fertility, in sunny places. It is encountered on roadsides and around the edge of habitations. It is a weed of rainfed crops in cropping systems of cassava, maize and rainfed rice, extensive; in fallows and places found in almost all climatic zones of Madagascar (Middle west Highlands, Northwest).
Mauritius: Present.
Reunion: Absent.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Habitat and Distribution
General Habitat
Habitat
Terrestrial
There is content in another language. Please click here to read it. (Français)
Origin
Neojeffreya decurrens is native to Austral Africa.
Worldwide distribution
This species occurs in Southern Africa from Tanzania to South Africa and in the Indian Ocean (Madagascar, comoros and Mauritius).
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Occurrence
No Data
📚 Demography and Conservation
Risk Statement
There is content in another language. Please click here to read it. (Français)
Local harmfulness
Comoros: Present but not a crop weed.
Madagascar: Neojeffreya decurrens is a common species with varying abundance. It is a weed of end cycle that often blooms after harvest annual of crops. It's a weed characteristic of rainfed crops on marginal lands and degraded pastures. It can be locally abundant in culture systems of cassava and upland rice in sub humid areas on light soils.
Mauritius: Present but not a crop weed.
Reunion: Absent.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Uses and Management
Management
There is content in another language. Please click here to read it. (Français)
Local control
Madagascar: Only manual weeding is practiced to fight against Neojeffreya decurrens in cropping systems based on cassava and upland rice.
Madagascar: Only manual weeding is practiced to fight against Neojeffreya decurrens in cropping systems based on cassava and upland rice.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Information Listing
Global Biodiversity Information Facility (GBIF)
There is content in another language. Please click here to read it. (Français)
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
References
- HUMBERT H. 1962. Flore de Madagascar et des Comores (Plantes Vasculaires) 189è Famille COMPOSEES Tome II, p 371-373.
- Plants of the World Online https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:234318-1
- The World Flora Online https://www.worldfloraonline.org/taxon/wfo-0000043280
Information Listing > References
- HUMBERT H. 1962. Flore de Madagascar et des Comores (Plantes Vasculaires) 189è Famille COMPOSEES Tome II, p 371-373.
- Plants of the World Online https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:234318-1
- The World Flora Online https://www.worldfloraonline.org/taxon/wfo-0000043280
Images
There is content in another language. Please click here to read it. (Français)
Herbarium pictures ReCOLNAT: https://explore.recolnat.org/search/botanique/simplequery=Neojeffreya%2520decurrens
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
🐾 Taxonomy
| Root | Root |
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Neojeffreya |
| Species | Neojeffreya decurrens (L.) Cabrera |
📊 Temporal Distribution
📷 Related Observations
