Stenanthemum mediale

Last updated

Stenanthemum mediale
Status DECF P1.svg
Priority One — Poorly Known Taxa (DEC)
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rhamnaceae
Genus: Stenanthemum
Species:
S. mediale
Binomial name
Stenanthemum mediale

Stenanthemum mediale is a species of flowering plant in the family Rhamnaceae and is endemic to inland Western Australia. It is an erect shrub with densely hairy young stems, egg-shaped leaves and densely hairy heads of silvery to rust-coloured flowers.

Contents

Description

Stenanthemum mediale is an erect shrub that typically grows to a height of up to 35 cm (14 in), its young stems densely hairy. Its leaves are egg-shaped with the narrower end towards the base, 3.5–7 mm (0.14–0.28 in) long and 2.5–4.5 mm (0.098–0.177 in) wide on a hairy petiole about 1 mm (0.039 in) long, with stipules joined together for their lower one-third. The upper surface is more or less glabrous and the lower surface densely hairy, the hairs pressed against the surface. The flowers arranged in clusters 5–8 mm (0.20–0.31 in) wide, surrounded by broad, often toothed bracts about 1.5 mm (0.059 in) wide, and are covered with silvery or rust-coloured hairs pressed against the surface. The floral tube is 1.5–2.5 mm (0.059–0.098 in) long and densely hairy, the sepals 1.3–1.7 mm (0.051–0.067 in) long and the petals 1.1–1.2 mm (0.043–0.047 in) long. Flowering occurs from April to August, and the fruit is a densely hairy schizocarp 3.0–3.5 mm (0.12–0.14 in) long. [2] [3]

Taxonomy and naming

Stenanthemum mediale was first formally described in 1995 by Barbara Lynette Rye in the journal Nuytsia from specimens collected on Yeelirrie Station in 1995. [2] [4] The specific epithet (mediale) means "in the middle", referring to the distribution of this species in the middle of Western Australia. [2]

Distribution and habitat

This species grows in red, clayey soil in the Murchison bioregion of inland Western Australia. [2] [3] [5]

Conservation status

Stenanthemum mediale is listed as "Priority One" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions, [5] meaning that it is known from only one or a few locations which are potentially at risk. [6]

Related Research Articles

Spyridium glaucum is a species of flowering plant in the family Rhamnaceae and is endemic to a restricted area of south-western Western Australia. It is an erect or spreading shrub with egg-shaped leaves, and clusters of 3 to 6 rusty-hairy flowers.

<i>Spyridium riparium</i> Species of shrub

Spyridium riparium is a species of flowering plant in the family Rhamnaceae and is endemic to the south of Western Australia. It is an erect shrub, usually with narrowly egg-shaped leaves, and clusters of densely hairy, white or cream-coloured flowers.

Cryptandra craigiae is a flowering plant in the family Rhamnaceae and is endemic to a restricted area of southern Western Australia. It is a shrub with linear leaves and dense clusters of white or cream-coloured, tube-shaped flowers.

Cryptandra dielsii is a flowering plant in the family Rhamnaceae and is endemic to the south-west of Western Australia. It is a spreading shrub with linear to narrowly oblong leaves and dense clusters of white, hairy, tube-shaped flowers.

Cryptandra distigma is a flowering plant in the family Rhamnaceae and is endemic to inland Western Australia. It is a shrub with oblong or narrowly egg-shaped leaves and clusters of white to cream-coloured, tube-shaped flowers.

<i>Spyridium tricolor</i> Species of shrub

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.

Cryptandra exserta is a flowering plant in the family Rhamnaceae and is endemic to inland Western Australia. It is a shrub with narrowly oblong leaves and clusters of white, tube-shaped flowers.

Stenanthemum argenteum is a species of flowering plant in the family Rhamnaceae and is endemic to a restricted part of Queensland. It is a shrub with hairy branches, lance-shaped to egg-shaped leaves with the narrower end towards the base, and heads of about seven hairy white, tube-shaped flowers.

Stenanthemum bremerense is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is an erect, or low spreading shrub with hairy young stems, broadly egg-shaped leaves and densely hairy heads of tube-shaped flowers, sometimes with whitish floral leaves.

Stenanthemum complicatum is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a woody, erect or straggling shrub with densely hairy young stems, broadly egg-shaped leaves and densely woolly-hairy heads of tube-shaped flowers.

Cryptandra imbricata is a flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a spreading shrub with spiny, interlaced branchlets, narrowly oblong to linear leaves and spike-like clusters of white, tube-shaped flowers.

Cryptandra inconspicua is a flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a small, spreading shrub with spiny, interlaced branchlets, narrowly oblong to linear leaves and spike-like clusters of tiny white, tube-shaped flowers.

Stenanthemum divaricatum is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a small, often spiny shrub with sparsely hairy young stems, fan-shaped to narrowly egg-shaped leaves and densely, softly-hairy heads of tube-shaped flowers.

Cryptandra intermedia is a flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a small shrub, usually with spiny branchlets, elliptic to linear leaves and spike-like clusters of white, tube-shaped flowers.

<i>Stenanthemum emarginatum</i> Species of flowering plant

Stenanthemum emarginatum is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a spreading to prostrate shrub with sparsely hairy young stems, narrowly fan-shaped to linear leaves and densely, shaggy-hairy heads of white or cream-coloured flowers.

Cryptandra intonsa is a flowering plant in the family Rhamnaceae and is endemic to inland Western Australia. It is an erect or spreading shrub with linear to narrowly oblong leaves and clusters of white or cream-coloured, tube-shaped flowers arranged in head-like clusters.

<i>Stenanthemum humile</i> Species of flowering plant

Stenanthemum humile is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a low, erect perennial herb or shrub with white, woolly-hairy young stems, linear to narrowly elliptic leaves and densely, woolly-hairy heads of tube-shaped flowers.

<i>Stenanthemum intricatum</i> Species of flowering plant

Stenanthemum intricatum is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is an erect to spreading, often wiry shrub with sparsely hairy young stems, egg-shaped to fan-shaped leaves and greyish, densely softly-hairy heads of white or cream-coloured flowers.

Stenanthemum liberum is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a dwarf or prostrate shrub with densely hairy young stems, elliptic to egg-shaped with the narrower end towards the base, and densely hairy heads of tube-shaped flowers.

Stenanthemum limitatum is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is an erect or straggling shrub with sparsely hairy young stems, egg-shaped to fan-shaped leaves and greyish, softly-hairy heads of white or cream-coloured flowers.

References

  1. ↑ "Stenanthemum mediale". Australian Plant Census. Retrieved 3 January 2023.
  2. 1 2 3 4 Rye, Barbara L. (1995). "New and priority taxa in the genera Cryptandra and Stenanthemum (Rhamnaceae) of Western Australia". Nuytsia. 10 (2): 290–291. Retrieved 3 January 2023.
  3. 1 2 Kellerman, Jurgen; Thiele, Kevin R. Kodela, Phillip G. (ed.). "Stenanthemum mediale". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 3 January 2023.
  4. ↑ "Stenanthemum mediale". APNI. Retrieved 3 January 2023.
  5. 1 2 "Stenanthemum mediale". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  6. ↑ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 3 January 2023.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.