Pimelea sessilis

Pimelea sessilis is a species of flowering plant in the family Thymelaeaceae and is endemic to the west of Western Australia. It is an erect shrub with sessile, elliptic leaves, and heads of white or cream coloured flowers surrounded by 4 broadly elliptic involucral bracts.

Pimelea sessilis
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Thymelaeaceae
Genus: Pimelea
Species:
P. sessilis
Binomial name
Pimelea sessilis

Description

Pimelea sessilis is an erect shrub that typically grows to a height of 15–40 cm (5.9–15.7 in) with dense tufts of hair in its leaf axils. The leaves are sessile to almost stem-clasping, narrowly elliptic to almost round, 6–15 mm (0.24–0.59 in) long and 6–9 mm (0.24–0.35 in) wide. The flowers are arranged in heads on a peduncle 5–25 mm (0.20–0.98 in) long, surrounded by 4 broadly elliptic to almost round involucral bracts 7–15 mm (0.28–0.59 in) long and 6–14 mm (0.24–0.55 in) wide, each flower on a pedicel 1.5–2.0 mm (0.059–0.079 in) long. The flower tube is 8–11 mm (0.31–0.43 in) long, the sepals 3–5 mm (0.12–0.20 in) long, and the stamens are longer than the sepals. Flowering occurs from August to October.[2][3][4][5]

Taxonomy

Pimelea sessilis was first formally described in 1988 by Barbara Lynette Rye in the journal Nuytsia from specimens collected near Kalbarri in 1985.[5][6] The specific epithet (sessilis) means "sessile".[7]

Distribution and habitat

Pimelea sessilis grows in shrubland between Tamala Station and Yandanooka in the Avon Wheatbelt, Carnarvon, Geraldton Sandplains and Yalgoo bioregions of Western Australia.[2][4][5]

Conservation status

Pimelea sessilis is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.[2]

References
  1. "Pimelea sessilis". Australian Plant Census. Retrieved 2 April 2023.
  2. "Pimelea sessilis". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. Rye, Barbara L. "Pimelea sessilis". Flora of Australia. Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 2 April 2023.
  4. Rye, Barbara L. (1988). "A revision of Western Australian Thymelaeaceae". Nuytsia. 6 (2): 232–234. Retrieved 2 April 2023.
  5. Rye, Barbara L. (1999). "An updated revision of Pimelea sect. Heterolaena (Thymelaeaceae), including two new taxa". Nuytsia. 13 (1): 188–189. Retrieved 2 April 2023.
  6. "Pimelea sessilis". APNI. Retrieved 2 April 2023.
  7. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 306. ISBN 9780958034180.
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