Pseudogynoxys chenopodioides

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Pseudogynoxys chenopodioides
Monarch Butterfly on Mexican Flame Vine (41776697660).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Pseudogynoxys
Species:
P. chenopodioides
Binomial name
Pseudogynoxys chenopodioides
(Kunth) Cabrera
Synonyms [1] [2]
Numerous
  • Gynoxys berlandieriDC.
  • Gynoxys berlandieri var. cordifoliaDC.
  • Gynoxys berlandieri var. cuneataDC.
  • Gynoxys cordifoliaCass.
  • Gynoxys fragransHook.
  • Gynoxys haenkei DC.
  • Pseudogynoxys berlandieri(DC.) Cabrera
  • Pseudogynoxys haenkei(DC.) Cabrera
  • Pseudogynoxys hoffmannii(Klatt) Cuatrec.
  • Senecio berlandieri(DC.) Hemsl.
  • Senecio calocephalusHemsl.
  • Senecio calocephalusPoepp.
  • Senecio chenopodioidesKunth
  • Senecio chinotegensisKlatt
  • Senecio confususBritten
  • Senecio convolvuloidesGreenm.
  • Senecio hemsleyiBritten
  • Senecio hoffmanniiKlatt
  • Senecio kermesinusHemsl.
  • Senecio rothschuhianusGreenm.
  • Senecio skinneriHemsl.

Pseudogynoxys chenopodioides (syn. Senecio confusus), known commonly as Mexican flamevine, [3] orange-flowered groundsel [4] and orange glow vine, [5] is a climber in the family Asteraceae, native to Central America and the West Indies. It is a vigorous vine with thick evergreen, deep green leaves and bright orange daisy-like flowers, which are borne in clusters, and usually bloom all year round. [6]

Contents

Description

Leaves and flowers Senecioconfusus.jpg
Leaves and flowers

Pseudogynoxys chenopodioides is a fast-growing, [7] twining, herbaceous vine that reaches a height of 5 metres (16 ft) to 10 metres (33 ft). [8]

It features smooth, subcylindrical, glabrous or puberulous stems that become slightly woody as they age. Its evergreen leaves are simple, dull, alternate, arrowhead-shaped, toothed or serrated, 2-4 inches long, glabrous, somewhat fleshy, ovate to lanceolate, often unequal, membranaceous with conspicuous venation, slightly cordiform and obtuse base, and acute apex. [9] Its petioles are 1.5-2.2 cm long. [8]

Inflorescences

It features daisy-like, orange ray flowers (which age to a bright red or vermilion upon pollination) that are 1 inch in diameter with golden tubular corollas on terminal clusters. [10] [11] [9] Capitula is 2-6 cm, pedunculate, in terminal corymbiform cymes. Peduncle is 2-5 cm in diameter. The phyllaries are green, lanceolate, 4 mm long. Achenes are turbinate and hispidulous, 4 mm in diameter. [8]

Polycarpic, the plant will sporadically bloom all year-round in mild winter climates, though generally peaking in spring and summer. [12] [9] In Florida, it tends to flower in autumn and winter more, and in Puerto Rico it flowers from late winter to early spring. [8]

The fruits are ribbed, inconspicuous, oval-shaped brown less than 0.5 inches in diameter, with persistent bristles. Its seeds are wind dispersed and its fruit resemble dandelion seed heads. [7] [8] White and bristly cypselae that are 2-4mm long are continual on plant. [4]

Taxonomy

The plant's former scientific name Senecio confusus translates to "confused old man", which refers to the pappus bristles on the achenes and the vine's rampant, irregular habit of growth, respectively. [4] Without support, a "confusion" of stems change the plant into a straggly shrub. [6]

Its current taxonomic name Pseudogynoxys chenopodioides refer to its "pseudo" resemblance to some of the species within the gynoxys and chenopodioideae genus. 'Gynoxys' is derived from Greek terms of 'gyne' (female) and 'oxys' (spiny), which refers to the shape of the plant's female flower parts. 'Chenopodioides' means 'resembling goosefoot' in Greek (chen: goose, pous: foot), which describes the leaf shape. [4]

Cultivation

Potted houseplant Unknown flower1.jpg
Potted houseplant

The Mexican flamevine is prized as an ornamental because of its showy flowers, which are pollinated by butterflies, hummingbirds and bees. It is widely grown in gardens in parts of the United States in hardiness zones 10 through 11 as a climber or groundcover, though it can be hardy down to -6.7 °C (20 °F) in zone 9a. [9] [5] It requires full sun, well-drained soil, and either a trellis or a shrub to climb on. [13]

Its fast growth is ideal to cover unsightly fences, or to caul a trellis (since it usually reaches maturity within the first year). Regular heading aids foliage growth and blooms at the bottom of a fence or trellis. If not pruned, foliage and flowers will generally pile up at the top. [9] Spent flowerheads should be occasionally removed to boost blooming all across plant. [4]

In colder areas, frost will kill the shoots, but the roots can survive the winter in most of the contiguous United States. [14] [15] It can be grown as an annual plant in a cold climate due to its rapid growth rate. If not grown as a vine, it will grow in a sprawling shrub-like form. [16] It is moderately drought-tolerant and prefers usually wet, somewhat alkaline clay, sand, acidic and loam soils. [9] The plant is mildly toxic if indigested, [5] and handling it may usually result in dermatitis and an itching rash. [7] It is toxic to dogs, cats and horses. [12]

It has been cultivated in Hawaii with one naturalization record for Hawaii Island, since the early 1940s. [7] It has been cultivated in Florida since 1939, with low to moderate availability, and has been reported as persisting after cultivation there, growing on disturbed sites. [10] It is also sold under the name 'São Paulo'. [5]

Habitat

Rambling habit on a fence Senecio confusus.jpg
Rambling habit on a fence

It is native from Mexico (specifically Veracruz) to Honduras in Central America, and can be found as far as the northern regions of South America in Venezuela, Colombia, Guyana and Suriname, [4] where it generally thrives in moist habits (though it can tolerate mildly dry climates and moderate drought). [12] [8] Versatile, it can survive in elevations exceeding 2200 m. [8]

It has been naturalized in Hawaii (Oahu), Puerto Rico, other parts of the Caribbean, possibly the Canary Islands, United States (such as Texas and the Gulf Coast), India, Singapore and on various islands in the Pacific Ocean, and is an adventive plant in Florida. [7]

Invasiveness

Due to its distribution ability by wind-dispersed seeds and stem fragments (which can root readily), it has become an escaped plant that is naturalized along roadsides, forest edges, moist thickets and disturbed sites.

As such, it has been listed as invasive in Anguilla, Hawaii, and it is considered potentially invasive in Florida and Galapagos Islands due to its aggressive habit of spreading and rapidly colonizing new environments. [8]

Pests

P. chenopodioides is a nonhost of Digitivalva delaireae and this moth is an ineffective biocontrol of invasive Flame Vine [17] Nematodes, mites, scales, and caterpillars can also disturb the plant. [9] Leaves may have irregular reddish-purple patches, either due to nutrient deficiency, or infestation by Alternaria senecionis , a fungus which causes leaf lesions. [4] Nonetheless, the plant is rarely bothered by any pests, therefore making it good for beginners. [6]

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References

  1. Tropicos
  2. The Plant List
  3. USDA, NRCS (n.d.). "Pseudogynoxys chenopodioides". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 15 October 2015.
  4. 1 2 3 4 5 6 7 Pseudogynoxys chenopodioides (Kunth) Cabrera Flora Fauna Web. Retrieved 19 March 2024.
  5. 1 2 3 4 Mexican Flame Vine (Pseudogynoxys chenopodioides 'Sao Paulo') National Gardening Association
  6. 1 2 3 Senecio confusus - a Fiesta of Mexican Flowers for beginners and butterflies... Top Tropicals
  7. 1 2 3 4 5 Pseudogynoxys chenopodioides (Mexican flamevine) CGAPS
  8. 1 2 3 4 5 6 7 8 Pseudogynoxys chenopodioides (Mexican flamevine) J Rojas-Sandoval. Centre for Agriculture and Bioscience International. 8 July 2018. Retrieved 15 March 2024.
  9. 1 2 3 4 5 6 7 SENECIO CONFUSUS MEXICAN FLAME VINE Edward F. Gilman, Ryan W. Klein, and Gail Hansen. University of Florida, Institute of Food and Agricultural Sciences. Retrieved 14 March 2024.
  10. 1 2 Pseudogynoxys chenopodioides (Kunth) Cabrera, Brittonia. 7: 56. 1950, Flora of North America v 20 p 608.
  11. Cabrera, Angel Lulio. Brittonia 7(2): 56. 1950.
  12. 1 2 3 Senecio confusus (Mexican Flame Vine) Gardenia.net
  13. Brushwood Nursery, Pseudogynoxys chenopodioides
  14. Floridata
  15. Rare Palm Seeds
  16. Pseudogynoxys chenopodioides Missouri Botanical Garden