Wimmeria mexicana

Wimmeria mexicana is a large shrub or small tree, often reaching 8 metres (26 ft) in height, that is common in the Southeastern United States and in regions of Mexico, including the states of Oaxaca, Chihuahua, and central to eastern Sonora. It is commonly called papelío and algodoncillo.[2]

Wimmeria mexicana

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Celastrales
Family: Celastraceae
Genus: Wimmeria
Species:
W. mexicana
Binomial name
Wimmeria mexicana
Synonyms

Celastrus mexicanus Moc. & Sessé ex DC.

Description

The branches and trunk, 30 centimetres (12 in) in diameter, are erect to ascending, making it more tall than wide. Large, flaky, papery, gray plates cover its smooth, white bark. Young twigs, petioles, and flower axils sometimes have short, tiny hairs, but are mostly glabrous. The crown is spread out and sparse. The leaves, exstipulate and 2–6 cm in length, alternate and vary in shape between lanceolate, elliptic, and obovate. Flowers tend to be 7.5–8 mm wide, white to cream colored, bisexual, with 5 petals on 5 sepals, and arranged in axillary cyme. The fruits, 1–1.4 cm across, are papery, one-seeded, three-lobed samaras, similar to species of Dodonaea.[2]

Wimmeria mexicana mass flowers around July to October, or often after heavy Autumn rain, attracting a large number of insects, particularly bees and flies. The leaves have serrated edges due to insects.[2]

Uses

Wood from the tree is commonly used to make fence posts, house beams, and firelogs. Also, the Guarijío prepare herbal tea, malo en el cuerpo (pain in the body), from W. mexicana, chamomile, and cilantro.[2]

Taxonomy

Wimmeria confusa, a synonym of W. mexicana, was so named because it had been previously confused with Wimmeria concolor and was so figured in William Hooker's Icones Plantarum. W. confusa was named by William Hemsley in 1878, based on a plant collected by Karl Hartweg. The same year, Ludwig Radlkofer described W. pallida, based on the same Hartweg specimen as well as specimens collected by Thaddäus Haenke (perhaps in Acapulco) and Frederik Liebmann. This was confusingly also called W. confusa in Biologia Centrali-Americana.[3]

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References
  1. Fuentes, A.C.D., Martínez Salas, E. & Samain, M.-S. (2020). "Wimmeria mexicana". IUCN Red List of Threatened Species. 2020: e.T126300137A126300801. Retrieved July 12, 2020.CS1 maint: multiple names: authors list (link)
  2. Felger, Johnson, & Wilson, p. 133
  3. Contributions from the U. S. National Herbarium, p. 130
  • Contributions from the U. S. National Herbarium. I. 1890–1895. pp. 95–.CS1 maint: extra punctuation (link)
  • Felger, Richard Stephen; Matthew Brian Johnson; Michael Francis Wilson (2001). The Trees of Sonora, Mexico. Oxford University Press. ISBN 0-19-512891-5.
  • Hemsley, William Botting (1878). Diagnoses Plantarum Novarum Vel Minus Cognitarum Mexicanarum et Centrali-Americanarum (in Latin). pp. M1 6–.CS1 maint: extra punctuation (link)
  • Hooker, William Jackson (1841). Icones Plantarum. IV. London: Longman, Orme, Brown, Green, and Longmans. pp. 353–.CS1 maint: extra punctuation (link)
  • Wimmeria mexicana (Algodoncillo, Papelío)
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