Eucalyptus roycei
| Eucalyptus roycei | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Eucalyptus roycei |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Eucalyptus roycei | ||||||||||||
| SGMCarr , DJCarr & ASGeorge |
Eucalyptus roycei is a species ofthe myrtle family (Myrtaceae). It occurs on the west coast of Western Australia and is called "Shark Bay Mallee" there.
description
Appearance and leaf
Eucalyptus roycei grows in the form of the mallee - eucalyptus , this is a growth form that is more shrub -like than tree-shaped , there are usually several trunks that form a lignotuber ; or as a tree that reaches heights of 2 to 6 meters. The gray, gray-brown or yellow bark is smooth all over the tree and peels in short strips or small, polygonal patches. There are oil glands in both the bark and the marrow.
In Eucalyptus roycei is Heterophyllie ago. On medium-old specimens, the leaves are sessile, elliptical, straight, with entire margins and matt gray-green. The opposite, dull green leaves on the top and bottom of the same color on adult specimens have a leaf blade that is lanceolate, broadly lanceolate or egg-shaped, tapers towards the base of the blade, has a pointed or tapered upper end and can be straight or sickle-shaped. The raised lateral nerves extend from the median nerve at an acute angle. The cotyledons ( cotyledons ) are kidney-shaped.
Inflorescence and flower
On the side of an inflorescence stem that is round or square in cross section, there are only about three flowers in a simple inflorescence . The flower buds are egg-shaped or cylindrical and not floured or frosted blue-green. The sepals are reduced to four teeth on the flower cup (hypanthium). The smooth calyptra is hemispherical or conical, as long as the striped or ribbed flower cup and wider than this. The flowers are yellow or creamy white. The flowering period in Western Australia extends from January to March.
fruit
The stalked fruit is cylindrical. The disc is indented, the fruit compartments are included.
Occurrence
The natural range of Eucalyptus roycei is on the central west coast of Western Australia at Shark Bay . Eucalyptus roycei occurs only in the independent administrative district Shark Bay in the Gascoyne region.
Eucalyptus roycei thrives on sandy plains on calcareous , red sand soils .
Taxonomy
The first description of Eucalyptus roycei was made in 1969 by Stella Grace Maisie Carr and Dennis John Carr in Proceedings of the Royal Society of Victoria , Volume 83, page 159. The type material has the label " EM Scrymgeour and S. G .M. Carr 284. PERTH; paratypes, EM Scrymgeour and SGM Carr 293, 297. PERTH ".
Individual evidence
- ↑ a b Specimen search results: Eucalyptus roycei at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved March 5, 2013
- ↑ a b c APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved March 5, 2013
- ↑ a b c d e Eucalyptus roycei at EucaLink - A Web Guide to the Eucalypts . Retrieved March 5, 2013.
- ↑ a b c d Eucalyptus roycei in the Western Australian Flora . Retrieved March 5, 2013.
- ↑ Eucalyptus microphylla at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed March 5, 2013.
- ↑ Rafaël Govaerts (ed.): Eucalyptus roycei. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved March 5, 2013.