HELIOTROPIUM CURASSAVICUM PDF

Heliotropium curassavicum L. Show All Show Tabs salt heliotrope. Western wetland flora: Field office guide to plant species. West Region, Sacramento. Usage Requirements. May 23,

Author:Dorisar Mejin
Country:Germany
Language:English (Spanish)
Genre:Business
Published (Last):5 August 2006
Pages:234
PDF File Size:5.26 Mb
ePub File Size:14.48 Mb
ISBN:633-8-74121-865-7
Downloads:75382
Price:Free* [*Free Regsitration Required]
Uploader:Doujin



Heliotropium curassavicum is an aggressive weed that rapidly colonizes new areas, in particular on disturbed saline soils and coastal areas in arid and semiarid habitats. It forms dense monospecific sta It forms dense monospecific stands that displace native vegetation and alter successional pathways. A combination of traits, such as high seed germination and seedling establishment rates in open areas, along with its ability to shift between sexual reproduction to clonal growth i.

The family Boraginaceae comprises 94 genera and species, distributed mostly in warm temperate regions across the Northern Hemisphere, but also across tropical and subtropical regions Stevens, The genus Heliotropium includes approximately species that mainly grow in hot, dry and open habitats of tropical, subtropical and warm temperate regions Hilger and Diane ; Muhaidat et al. Several Heliotropium species are popular garden plants and many are also weeds that may be hepatotoxic if eaten in large quantities due to abundant pyrrolizidine alkaloids.

Traditionally the genus Heliotropium has been included within the subfamily Heliotropoideae, together with the closely related genus Tournefortia , but the taxonomy and the infrafamilial relationships of the Heliotropoideae still remain controversial Diane et al. Description Top of page The following description is adapted from Miller and Flora of Panama :. Herb with stem and branches decumbent, glabrous, succulent, sometimes glaucous on the younger parts.

Inflorescences and spikes, unilateral, mostly terminal, cm long, the bracts absent. Flowers sessile and actinomorphic; calyx of 5 sepals, slightly connate basally, elongate-deltoid, 1. Fruit 4-lobed, separating into 4 nutlets at maturity, the nutlets glabrous, wedge-shaped, 1. Heliotropium curassavicum is native to the Americas where it can be found from Canada to Argentina. It has been introduced into Europe, Africa, Asia, and Australia and can be found extensively naturalized across the Mediterranean Basin Hegazy et al.

The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

In the Mediterranean, H. Today it can be found naturalized across nearly the entire Mediterranean Basin and is also common along the Nile Delta Groves, ; Hegazy et al.

The first report of H. Since it has also been recorded repeatedly in Gran Canaria, where it is continues to spread Verloove, On the Mascarene Islands, H. According to the authors, this species was likely to have been introduced into Mauritius unintentionally via equipment or freight Pynee and Lorence, Heliotropium curassavicum can be found growing on saline or alkaline flats, plains and meadows, seasonal swamps, estuaries, coastal thickets, mangrove forests, beaches, irrigated areas, riverbanks, near lakes and ponds, wetlands, desert areas and oases and along seashores and dunes at elevations from sea level to m.

It is also a common weed of roadsides, ruderal areas, pastures, crops and fallows and abandoned farms Groves, ; Hegazy et al. The chromosome number of H. Heliotropium curassavicum has small bisexual flowers arranged in inflorescences. Heliotropium curassavicum is able to shift between sexual reproduction and vegetative reproduction in response to temperature, soil moisture, level of disturbance and openness of the disturbed habitat Hegazy, Once this species reaches a new area, it starts colonizing the new habitat through germination of seeds.

Once the habitat is fully colonized, seed germination is often inhibited within the closed areas and the stand is largely maintained by vegetative reproduction shoots and buds from established individuals.

Physiology and phenology. In North and Central America, H. In Egypt, flowering activity has been recorded from February to October Hegazy et al. Environmental requirements. Heliotropium curassavicum is a common weed of hot and open sites in dry, arid and semiarid habitats.

It is adapted to grow on sandy soils with a pH in the range of 6. This species shows a high tolerance to drought and anthropogenic disturbance manmade or disturbed habitats as well as tolerating saline soils and waterlogged conditions Maiz-Tome, ; ISSG, Heliotropium curassavicum spreads by seeds and vegetatively from adventitious root buds. The seeds can be dispersed by waterways, vehicles, animals and in contaminated soil and agricultural products.

Root fragments can be broken off and spread during cultivation or soil preparation for farming Hegazy, ; Hegazy et al. Heliotropium curassavicum is an aggressive weed that has become dominant mostly in disturbed areas along the Mediterranean Basin and the Nile Delta, where it is regarded as a serious ecological and agricultural problem.

It has been recorded invading coastal thickets, wetlands, mangrove forests and coastal deserts and oases. It forms dense monospecific stands that displace native vegetation and alter successional processes Hegazy et al. Across these habitats, H. The dried roots are ground into a powder and applied to sores and wounds. A decoction of the plant is taken as a remedy for leucorrhoea, and as a substitute for Heliotropium indicum , which is used to treat warts, inflammation, and tumours PROTA, ; Useful Tropical Plants, Heliotropium curassavicum is similar to other weedy Heliotropium species such as H.

These species can be distinguished by the following traits Queensland Government, :. Heliotropium curassavicum is also relatively similar to some verbenas Verbena spp. However, Verbena species do not have coiled flower clusters and their leaves usually have toothed or highly divided margins Queensland Government, Bethune, S. Broome, R. Plants of the Eastern Caribbean. Online database. In: Plants of the Eastern Caribbean. Online database , Barbados: University of the West Indies. Connor RA, Anguilla Invasive Species Strategy.

Anguilla: Department of Environment. Diane, N. A systematic analysis of Heliotropium, Tournefortia, and allied taxa of the Heliotropiaceae Boraginales based on ITS1 sequences and morphological data. American Journal of Botany, 89 2 , Dinarvand, M. A new weed for the weed flora of Iran. Iranian Journal of Botany, 9 2 , Flora do Brasil, Brazilian flora Flora of Panama, Flora of Panama WFO.

GRIIS, Global Register of Introduced and Invasive Species. Groves, R. The biogeography of mediterranean plant invasions. In: Biogeography of mediterranean invasions, [ed. Invasive plant communities in the Nile Delta Coast. Global Journal of Environmental Research, 2 1 , Hegazy, A.

Trade-off between sexual and vegetative reproduction of the weedy Heliotropium curassavicum. Journal of Arid Environments, 27 3 , Perspectives on the biology of Heliotropium curassavicum in the Deltaic Mediterranean coast of Egypt. Arab Gulf Journal of Scientific Research, 12 3 , Plant ecology in the Middle East, [ed. Hilger HH, Diane N, India Biodiversity Portal, Online Portal of India Biodiversity.

In: Online Portal of India Biodiversity. ISSG, Luebert, F. Phylogenetic relationships and morphological diversity in Neotropical Heliotropium Heliotropiaceae. Taxon, 60 3 , Luque, T. Karyological studies on Spanish Boraginaceae. Heliotropium L. Willdenowia, 25 2 , Maiz-Tome L, Heliotropium curassavicum. Martins, E. Cape Verde Flora.

TOP 5300 SYRINGE PUMP PDF

Heliotropium curassavicum L.

Heliotropium curassavicum is an aggressive weed that rapidly colonizes new areas, in particular on disturbed saline soils and coastal areas in arid and semiarid habitats. It forms dense monospecific sta It forms dense monospecific stands that displace native vegetation and alter successional pathways. A combination of traits, such as high seed germination and seedling establishment rates in open areas, along with its ability to shift between sexual reproduction to clonal growth i.

ECX RUCKUS PDF

Heliotropium curassavicum

List of species Heliotropium amplexicaule Heliotropium convolvulaceum var. Citation for this treatment: Ronald B. Wilken , Heliotropium curassavicum var. Citation for the whole project: Jepson Flora Project eds.

KAZUO ISHIGURO UN ARTISTA DEL MUNDO FLOTANTE PDF

Heliotropium curassavicum , commonly called salt heliotrope [1] among other names , a species of flowering plant in the borage family Boraginaceae. It can be found as an introduced , and sometimes invasive, species in Africa, Asia, Australia, and Europe. This is a perennial herb which can take the form of a prostrate creeper along the ground to a somewhat erect shrub approaching 0. The stem and foliage are fleshy, with the leaves thick and oval or spade-shaped. The plentiful inflorescences are curled, coiling double rows of small bell-shaped flowers. Each flower is white with five rounded lobes and a purple or yellow throat.

ISTORIA SECRETA A OMENIRII EUGEN DELCEA PDF

.

Related Articles