Leitneria

Leitneria floridana (corkwood), the sole species in the genus Leitneria, is a deciduous dioecious shrub or small tree, found only in the southern United States states of Arkansas, Florida, Georgia, Missouri and Texas.

For the animal genus, see Leitneria (mite).

Leitneria

Near Threatened  (IUCN 2.3)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Simaroubaceae
Genus: Leitneria
Chapm.
Species:
L. floridana
Binomial name
Leitneria floridana

It grows at damp habitats, mostly in coastal areas and has extremely light wood with a density less than that of cork. It typically reaches 2–4 m tall, occasionally up to 8 m. The trunk can reach 10 cm in diameter. The leaves are alternate, simple lanceolate, 5–20 cm long and 3–6 cm broad.

In the past, it was treated as the only species in the family Leitneriaceae of the order Leitneriales, but genetic research by the Angiosperm Phylogeny Group has recently resulted in its being transferred to the family Simaroubaceae in the Sapindales. It is named after the German natural scientist E. F. Leitner.[2]

Fossil record

A single, strongly compressed endocarp has been collected from the sediments of the Villa San Faustino site in Italy. This isolated specimen demonstrates that †Leitneria venosa persisted in Italy until the Early Pleistocene. Leitneria sp. is also among the species listed in the Early Pliocene San Gimigniano flora. In northern Italy several endocarps of L. venosa have been found at the top of the Cervo River of Late Pliocene age. Leitneria was a rare element in the late Cenozoic floras of Italy[3]

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References
  1. World Conservation Monitoring Centre (1998). "Leitneria floridana". IUCN Red List of Threatened Species. 1998: e.T30937A9594131. doi:10.2305/IUCN.UK.1998.RLTS.T30937A9594131.en.
  2. Genaust, Helmut (1976). Etymologisches Wörterbuch der botanischen Pflanzennamen ISBN 3-7643-0755-2
  3. Martinetto, Edoardo (2001). "The role of central Italy as a centre of refuge for thermophilous plants in the late Cenozoic" (PDF). Acta Palaeobotan. 41 (2): 299–319.
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