Prostanthera tysoniana

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Prostanthera tysoniana
Status DECF P3.svg
Priority Three — Poorly Known Taxa (DEC)
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Prostanthera
Species:
P. tysoniana
Binomial name
Prostanthera tysoniana
Prostanthera tysonianaDistA100.png
Occurrence data from AVH
Synonyms [1]

Prostanthera tysoniana is a species of flowering plant in the family Lamiaceae and is endemic to Western Australia. It is a small, intricately-branched shrub with broadly elliptic leaves arranged in opposite pairs and white or cream-coloured flowers with purple streaks.

Contents

Description

Prostanthera tysoniana is a shrub that typically grows to a height of 0.2–0.5 m (7.9 in – 1 ft 7.7 in) and has intricately-branched stems that are square in cross-section. The leaves are arranged in opposite pairs, broadly elliptic to more or less round, 2–4 mm (0.079–0.157 in) long and wide. The flowers are borne singly in leaf axils on a woolly pedicel 1–3 mm (0.039–0.118 in) long with bracteoles about 1 mm (0.039 in) long at the base of the sepals. The sepals are about 3 mm (0.12 in) long with two lobes, about 2–4.5 mm (0.079–0.177 in) long and 5 mm (0.20 in) wide. The petals are white or cream-colured with purple streaks, 9–12 mm (0.35–0.47 in) long forming a tube about 5 mm (0.20 in) long with two lips, the lower with three lobes about 5 mm (0.20 in) long and 3 mm (0.12 in) wide, the upper about 6 mm (0.24 in) long and wide with two lobes. Flowering occurs in September. [2] [3]

Taxonomy

This mintbush was first formally described in 1997 by John Carrick who gave it the name Eichlerago tysoniana in the Journal of the Adelaide Botanic Gardens , from specimens collected by Isaac Tyson near the Murchison River in 1898. [2] [4] In 1992, Barry Conn changed the name to Prostanthera tysoniana in the journal Telopea . [5] [6]

Distribution and habitat

Prostanthera tysoniana is a rare species, only known from the Byro-Mount Narryer area in the Murchison biogeographic region. [5] [3]

Conservation status

Prostanthera tysoniana is classified as "Priority Three" by the Government of Western Australia Department of Parks and Wildlife [3] meaning that it is poorly known and known from only a few locations but is not under imminent threat. [7]

Related Research Articles

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<i>Prostanthera canaliculata</i> Species of flowering plant

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<i>Prostanthera laricoides</i> Species of flowering plant

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<i>Prostanthera oleoides</i> Species of flowering plant

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<i>Prostanthera patens</i> Species of flowering plant

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<i>Prostanthera schultzii</i> Species of flowering plant

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<i>Prostanthera tallowa</i> Species of flowering plant

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<i>Prostanthera verticillaris</i> Species of flowering plant

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References

  1. 1 2 "Prostanthera tysoniana". Australian Plant Census. Retrieved 6 October 2020.
  2. 1 2 Carrick, John (1977). "Studies in Australian Lamiaceae 2. Eichlerago, a new genus allied to Prostanthera". Journal of the Adelaide Botanic Gardens. 1 (2): 115–116.
  3. 1 2 3 "Prostanthera tysoniana". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. "Eichlerago tysoniana". APNI. Retrieved 6 October 2020.
  5. 1 2 Conn, Barry J. (1992). "Status of the genus Eichlerago (Labiatae)". Telopea. 4 (4): 649–651. doi: 10.7751/telopea19814951 . S2CID   87410086.
  6. "Prostanthera tysoniana". APNI. Retrieved 6 October 2020.
  7. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 6 October 2020.