Boronia minutipinna

Boronia minutipinna is a plant in the citrus family Rutaceae and is endemic to a small area in the Kimberley region of Western Australia. It is an erect shrub with many branches, hairy stems and leaves, pinnate leaves and white to pink, four-petalled flowers with the sepals longer and wider than the petals.

Boronia kalumburuensis

Priority Two — Poorly Known Taxa (DEC)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Boronia
Species:
B. minutipinna
Binomial name
Boronia minutipinna

Description

Boronia minutipinna is an erect, much branched shrub that grows to 50 cm (20 in) high. Its branches and leaves are covered with star-like hairs. The leaves have between 17 and 35 leaflets and are 5–34 mm (0.20–1.3 in) long and 2–4 mm (0.08–0.2 in) wide in outline. The end leaflet is elliptic, 1–2 mm (0.039–0.079 in) long and 0.5–1.5 mm (0.02–0.06 in) wide, the side leaflets are rhombic, 0.5–1.5 mm (0.020–0.059 in) long and wide. The flowers are white to pink and are arranged singly in leaf axils. The four sepals are triangular, 3–4 mm (0.12–0.16 in) long and 1.5–2 mm (0.06–0.08 in) wide, longer and wider than the petals. The four petals are 2.5–3 mm (0.098–0.12 in) long 1.5–2 mm (0.059–0.079 in) wide. The sepals and petals increase in size as the fruit develops. Flowering has only been observed in July.[2][3][4]

Taxonomy and naming

Boronia minutipinna was first formally described in 1997 by Marco F. Duretto from a specimen collected on the Osmond Plateau, and the description was published in Nuytsia.[5][2] According to Duretto, the specific epithet (minutipinna) is derived from the Latin minutas meaning "small" and pinnae meaning "wings", referring to the small leaflets.[2] The word for "small" in classical Latin is minutus (masculine), minuta (feminine) or minutum (neuter).[6]

Distribution and habitat

Boronia minutipinna is only known from the Osmond Plateau in the Kimberley region of Western Australia where it grows in sand between boulders.[2][7]

Conservation

This boronia is classified as "Priority Two" by the Western Australian Government Department of Parks and Wildlife[7] meaning that it is poorly known and from only one or a few locations.[8]

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References
  1. "Boronia minutipinna". APC. Retrieved 1 April 2019.
  2. Duretto, Marco F. (1997). "Taxonomic notes on Boronia species of north-western Australia, including a revision of the Boronia lanuginosa groups (Boronia section Valvatae:Rutaceae)". Nuytsia. 11 (3): 335–336. Retrieved 1 April 2019.
  3. Duretto, Marco F.; Wilson, Paul G.; Ladiges, Pauline Y. "Boronia minutipinna". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 1 April 2019.
  4. Duretto, Marco F. (1999). "Systematics of Boronia section Valvatae sensu lato (Rutaceae)" (PDF). Muelleria. 12 (1): 114–115. Retrieved 1 April 2019.
  5. "Boronia minutipinna". APNI. Retrieved 1 April 2019.
  6. Lewis, C.T. & Short, C. (1879). A Latin dictionary founded on Andrews' edition of Freund's Latin dictionary. Oxford: Clarendon Press.
  7. "Boronia minutipinna". FloraBase. Western Australian Government Department of Parks and Wildlife.
  8. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 1 April 2019.

kalumburuensis

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