Pimelea lehmanniana
Subspecies lehmanniana in the Australian National Botanic Gardens
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Thymelaeaceae
Genus: Pimelea
Species:
P. lehmanniana
Binomial name
Pimelea lehmanniana
Synonyms[1]

Pimelea lehmanniana is a species of flowering plant in the family Thymelaeaceae and is endemic to the southwest of Western Australia. It is a shrub with narrowly egg-shaped leaves and clusters of white to pale yellow flowers surrounded by 4 or 6, pale yellowish-green involucral bracts.

Description

Pimelea lehmanniana is an erect shrub that typically grows to a height of 0.3–1.2 m (1 ft 0 in – 3 ft 11 in) and has a single stem at ground level. The leaves are narrowly egg-shaped, sometimes with the narrower end towards the base, 4–34 mm (0.16–1.34 in) long and 1–7 mm (0.039–0.276 in) wide on a petiole 0.5–1.3 mm (0.020–0.051 in) long. The flowers are white to pale yellow and arranged in clusters on a peduncle 2–17 mm (0.079–0.669 in) long. There are 4 or 6 pale yellowish green, sometimes reddish, egg-shaped to broadly egg-shaped involucral bracts 13–21 mm (0.51–0.83 in) long and 7–14 mm (0.28–0.55 in) wide around the flower clusters, each flower on a hairy pedicel 1–2 mm (0.039–0.079 in) long. The floral tube is 8–14 mm (0.31–0.55 in) long, the sepals 3–5.5 mm (0.12–0.22 in) long, and the stamens are much longer than the sepals. Flowering occurs from August to November.[2][3][4][5]

Taxonomy

Pimelea lehmanniana was first formally described in 1845 by Carl Meissner in 1845 in Lehmann's Plantae Preissianae.[6][7] The specific epithet (lehmanniana) honours Johann Georg Christian Lehmann.[8]

In 1988, Barbara Lynette Rye described two subspecies of P. lehmanniana in the journal Nuytsia, and the names are accepted by the Australian Plant Census:

  • Pimelea lehmanniana Meisn. subsp. lehmanniana[9] has a circumscissile floral tube, the ovary-part hairy.[4][5][10]
  • Pimelea lehmanniana subsp. nervosa (Meisn.) Rye[11] has a floral tube that is not circumscissile, and the ovary-part of the floral tube is glabrous.[4][5][12]

Distribution and habitat

Subspecies lehmanniana grows on rocky hillsides or ridges from Lake Muir to East Mount Barren in the Avon Wheatbelt, Esperance Plains, Jarrah Forest and Mallee bioregions of south-western Western Australia,[4][5][10][13] and subsp. nervosa grows in jarrah and marri woodland on the Darling Range and nearby hilly areas between Gooseberry Hill, Yelverton, Walpole and Mount Barker in separate parts of the Jarrah Forest and Swan Coastal Plain bioregions.[4][5][12][14]

Conservation status

Both subspecies of P. lehmanniana are listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.[13][14]

References

  1. 1 2 "Pimelea lehmanniana". Australian Plant Census. Retrieved 16 January 2023.
  2. ↑ Rye, Barbara L. "Pimelea lehmanniana". Flora of Australia. Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 16 January 2023.
  3. ↑ "Pimelea lehmanniana". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. 1 2 3 4 5 Rye, Barbara L. (1988). "A revision of Western Australian Thymelaeaceae". Nuytsia. 6 (2): 228–232. doi:10.58828/nuy00133. S2CID 257685300. Retrieved 16 January 2023.
  5. 1 2 3 4 5 Rye, Barbara L. (1999). "An updated revision of Pimelea sect. Heterolaena (Thymelaeaceae), including two new taxa". Nuytsia. 13 (1): 179–181. doi:10.58828/nuy00324. S2CID 257679718. Retrieved 16 January 2023.
  6. ↑ "Pimelea lehmanniana". APNI. Retrieved 16 January 2023.
  7. ↑ Meissner, Carl (1845). Lehmann, Johann G.C. (ed.). Plantae preissianae sive enumeratio plantarum quas in australasia occidentali et meridionali-occidentali annis 1838-1841 collegit Ludovicus Preiss. Vol. 1. Hamburg: Sumptibus Meissneri. p. 603. Retrieved 16 January 2023.
  8. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 237. ISBN 9780958034180.
  9. ↑ "Pimelea lehmanniana subsp. lehmanniana". Australian Plant Census. Retrieved 16 January 2023.
  10. 1 2 Rye, Barbara L. "Pimelea lehmanniana subsp. lehmanniana". Flora of Australia. Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 16 January 2023.
  11. ↑ "Pimelea lehmanniana subsp. nervosa". Australian Plant Census. Retrieved 16 January 2023.
  12. 1 2 Rye, Barbara L. "Pimelea lehmanniana subsp. nervosa". Flora of Australia. Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 16 January 2023.
  13. 1 2 "Pimelea lehmanniana subsp. lehmanniana". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  14. 1 2 "Pimelea lehmanniana subsp. nervosa". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
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