Alnus jorullensis

Alnus jorullensis, commonly known as Mexican alder, is an evergreen or semi-evergreen alder, native to eastern and southern Mexico, Guatemala and Honduras.[1][2] Although previously reported from the Andes,[3] further collections showed these to be the similar species Alnus acuminata, commonly found in South America.[2]

Alnus jorullensis
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fagales
Family: Betulaceae
Genus: Alnus
Subgenus: Alnus subg. Alnus
Species:
A. jorullensis
Binomial name
Alnus jorullensis
Synonyms
  • Alnus acuminata var. jorullensis (Kunth) Regel
  • Alnus firmifolia Fernald

Alnus jorullensis is a medium-sized tree growing to 20–25 m tall. The leaves are obovate to elliptic, 5–12 cm long, somewhat leathery in texture with a serrated margin and glandular on the underside. The flowers are wind-pollinated catkins, produced in early spring.[4]

It is used for ornamental planting in warm temperate areas such as southern California.

Subspecies[1]
  1. Alnus jorullensis subsp. jorullensis - Mexico, Guatemala, Honduras
  2. Alnus jorullensis subsp. lutea Furlow - Mexico

References
  1. Kew World Checklist of Selected Plant Families
  2. Furlow, John (April 1979). "The Systematics of the American Species of Alnus (Betulaceae)". Rhodora. 81 (826): 151. Retrieved 18 December 2015.
  3. Macbride, J.F. (1937). "Betulaceae". Flora of Peru. Vol. 13 (2/2). Field Museum of Natural History. pp. 267–268.
  4. Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras
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