Spyridium tricolor
| Spyridium tricolor | |
|---|---|
 | |
 Priority Two — Poorly Known Taxa (DEC) | |
Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Rhamnaceae |
| Genus: | Spyridium |
| Species: | S. tricolor |
| Binomial name | |
| Spyridium tricolor | |
Spyridium tricolor is a species of flowering plant in the family Rhamnaceae and is endemic to southern continental Australia. It is an erect shrub with broadly elliptic to round leaves, and dense clusters of densely woolly-hairy, cream-coloured flowers.
Description
Spyridium tricolor is an erect, dense, rounded, densely hairy shrub that typically grows to a height of 0.3–1.5 m (1 ft 0 in – 4 ft 11 in). Its leaves are broadly elliptic to round, 8–13 mm (0.31–0.51 in) long and 7.5–12 mm (0.30–0.47 in) wide on a petiole 3–5 mm (0.12–0.20 in) long, with egg-shaped stipules 3–5.5 mm (0.12–0.22 in) long at the base. The flowers are cream-coloured, densely woolly-hairy and borne on the ends of branches in up to 3 clusters of 12 to 20 flowers on a branched rachis. Each cluster is surrounded by overlapping, broadly egg-shaped involucral bracts 4–6 mm (0.16–0.24 in) long, with a single cream-coloured leaf like bract. The floral tube is 1.2–1.5 mm (0.047–0.059 in) long, the sepals egg-shaped and 1.0–1.3 mm (0.039–0.051 in) long, and both are densely covered with white hairs. Flowering occurs throughout the year.[2][3]
Taxonomy
Spyridium tricolor was first formally described in 1993 by William Robert Barker and Barbara Lynette Rye in the Journal of the Adelaide Botanic Gardens from specimens collected by Paul G. Wilson, near Point Dover on the Great Australian Bight in 1967.[2][4] The specific epithet (tricolor) means "three-coloured", referring to the leaves, pale to mid-green on the upper surface, rust-coloured at first, later grey on the lower surface.[2]
Distribution and habitat
このスピリジウムは、石灰岩を含む砂質土壌に生育し、西オーストラリア州のケープ・アリッド国立公園とエアの間のマリー低木地帯や、南オーストラリア州のセドゥナ付近に散在して生育することが多い。[ 2 ] [ 3 ] [ 5 ]
保全状況
セイヨウオオカミは、西オーストラリア州政府生物多様性・保全・観光局によって「絶滅危惧種ではない」と分類されています。[ 3 ]
参考文献
- ^ 「Spyridium tricolor」。オーストラリア植物調査。2022年11月15日閲覧
- ^ a b c d Barker, William R.; Rye, Barbara L. (1993). 「Spyridium tricolor (Rhamnaceae), a disjunct new species from the Great Australian Bight」 . Journal of the Adelaide Botanic Gardens . 15 (2): 153– 157. 2022年11月15日閲覧。
- ^ a b c「Spyridium tricolor」 . FloraBase . 西オーストラリア州政府生物多様性・保全・観光局.
- ^ 「Spyridium tricolor」 . オーストラリア植物名索引. 2022年11月15日閲覧。
- ^ Rye, Barbara L. (1996). 「西オーストラリア州におけるPomaderris属、Siegfriedia属、Spyridium属、Trymalium属（Rhamnaceae）の概要」 . Nuytsia . 11 (1): 124. 2022年11月15日閲覧。
