Spyridium coalitum

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Spyridium coalitum
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rhamnaceae
Genus: Spyridium
Species:
S. coalitum
Binomial name
Spyridium coalitum

Spyridium coalitum is a species of flowering plant in the family Rhamnaceae and is endemic to Kangaroo Island in South Australia. It is a slender, erect shrub with softly-hairy young stems, oblong to narrowly elliptic leaves, and head of white to cream-coloured flowers.

Contents

Description

Spyridium coalitum is a slender, erect shrub that typically grows to a height of up to 2 m (6 ft 7 in), its young stems softly-hairy with brownish, simple and star-shaped hairs. The leaves are oblong to narrowly elliptic, mostly 6.0–9.5 mm (0.24–0.37 in) long and 2.1–2.5 mm (0.083–0.098 in) wide on a petiole 1.8–2.2 mm (0.071–0.087 in) long with reddish-brown stipules the base. The upper surface of the leaves is greyish-green and the lower surface is densely hairy. The heads of flowers are 5–13 mm (0.20–0.51 in) in diameter with floral leaves at the base, the individual flowers sessile, white to cream-coloured and sparsely hairy. The sepals are about 0.6 mm (0.024 in) long and the petals 0.4–0.5 mm (0.016–0.020 in) long. Flowering occurs from September to November and the fruit is a capsule about 2.5 mm (0.098 in) long. [2]

Taxonomy

Spyridium coalitum was first formally described in 2012 by Jürgen Kellermann and William Barker in the journal Muelleria . [3] It had previously been known as Spyridium halmaturinum var. integrifolium J.M.Black , first published in the Transactions and Proceedings of the Royal Society of South Australia in 1925. [4] [5] The specific epithet (coalitum) means "united by growth", referring to the stipules that are partly fused. [2]

Distribution

This species of Spyridium grows in coastal heath, shrubland and forest on limestone, and is endemic to Kangaroo Island in South Australia. [2]

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References

  1. "Spyridium coalitum". Australian Plant Census. Retrieved 6 July 2022.
  2. 1 2 3 Kellerman, Jürgen; Barker, William R. (2012). "Revision of the Spyridium bifidum - S. halmaturinum complex (Rhamaceae: Pomaderreae) from South Australia and Victoria". Muelleria. 30 (1): 45–46. Retrieved 6 July 2022.
  3. "Spyridium coalitum". APNI. Retrieved 6 July 2022.
  4. "Spyridium halmaturinum var. integrifolium". APNI. Retrieved 6 July 2022.
  5. Black, John M. (1925). "Additions to the Flora of South Australia, No. 23". Transactions and Proceedings of the Royal Society of South Australia. 49: 273. Retrieved 6 July 2022.