Sorbus scannelliana

Sorbus scannelliana, Scannell's whitebeam, is a species of whitebeam endemic to Ross Island near Killarney in southwest Ireland. It is one of the rarest tree species in the world; only five individual plants are known.[1]

Sorbus scannelliana
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rosaceae
Genus: Sorbus
Species:
S. scannelliana
Binomial name
Sorbus scannelliana
T.C.G.Rich

Description

Sorbus scannelliana is a small tree growing to about 5 m (16 ft) in height.[2] Leaves are elliptic, ranging from 1.6 to 1.85 times as long as they are broad. The upper face of the leaf is a dark, somewhat shiny green, while the underside is light greyish green, this due to the abundance of short, soft hairs. Both the base and apex of the leaf form acute angles, while the margins are lobed, incised 1/7 to 1/4 the way to the midrib. The flowers are white and form a quite dense inflorescence. Very few fruits have been observed, but seem to be more elongated than other whitebeams.[1]

Discovery

The species now known as S. scannelliana, was first critically examined in 1988, when it was believed to be an ecotype of Sorbus anglica. Further investigation led to its being classified as a distinct, new species in 2009.[3]

Naming

The specific epithet, scannelliana, was chosen to honour Irish botanist Maura Scannell, author of, among other works, the Census Catalogue of the Flora of Ireland[1]

gollark: https://media.discordapp.net/attachments/426116061415342080/783241041511710740/image0.jpg?width=322&height=422
gollark: It was created due to someone clicking the create server button.
gollark: Well, someone created it a few months ago, so it exists, see.
gollark: Welcome, "danik"!
gollark: It would not. The role is just in the list and I can't be bothered to check.

References
  1. Rich, T.C.G., Houston, L., Robertson, A. and Proctor, M.C.F., 2010. Whitebeams, Rowans and Service trees of Britain and Ireland: a monograph of British and Irish'Sorbus' L. London: Botanical Society of the British Isles.
  2. Stace, C., 2010. New flora of the British Isles. Cambridge University Press.
  3. Rich, T.C.G. and Proctor, M.C.F., 2009. Some new British and Irish Sorbus L. taxa (Rosaceae). Watsonia, 27(3), p.207.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.