Verticordia citrella
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Verticordia citrella is a species of flowering plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a small, densely branched shrub with cylinder shaped stem leaves that differ from those near the flowers, and small yellow flowers in groups near the ends of the branches.
Description
Verticordia citrella is a shrub with a single stem at the base but highly branched, growing to a height of up to Script error: No such module "convert". and a width of up to Script error: No such module "convert".. The leaves on the stems are linear in shape, round in cross-section, Script error: No such module "convert". long and taper to a point. Those near the flowers are broad elliptic to almost circular and Script error: No such module "convert". long.[1]
The flowers are faintly scented, arranged in round or corymb-like groups on erect stalks Script error: No such module "convert". long. The floral cup is top-shaped, about Script error: No such module "convert". long, glabrous and slightly warty. The sepals are yellow, Script error: No such module "convert". long, with 5 or 6 lobes with hairy fringes. The petals are also yellow, Script error: No such module "convert". and have long, spreading finger-like lobes. The style is Script error: No such module "convert". long, straight and glabrous. Flowering time is from October to November.[1]
The species V. acerosa is closely related and similar but it has larger leaves and larger flowers, and the flowers turn red or darker colours as they age.[1]
Taxonomy and naming
Verticordia citrella was first formally described by Alex George in 1991 from specimens collected between Perth and Toodyay by Alex and Elizabeth George. The description was published in Nuytsia.[2][3] The specific epithet (citrella) is derived from the Latin adjective citreus meaning "of lemon-yellow colour"[4] with the suffix -ella making the adjective diminutive,[5] referring to the colour and small size of the flowers.[1]
George placed this species in subgenus Chrysoma, section Chrysoma along with V. acerosa, V. subulata, V. endlicheriana.[3]
Distribution and habitat
This verticordia usually grows in sand that is damp in winter, in open shrubland. It only occurs in a single nature reserve between Perth and Toodyay.[6][7]
Conservation
Verticordia citrella is classified as "Priority Two" by the Western Australian Government Department of Parks and Wildlife[6] meaning that it is poorly known and from only one or a few locations.[8]
Use in horticulture
Verticordia citrella has been grown in Western Australia in well-drained soil and has flowered prolifically in sunny positions. It has been more difficult to grow in eastern Australia but has survived in containers for 3 or 4 years. It has been propagated from cuttings but plants grown in deep sand have sometimes self-sown from seed.[1]
References
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