Calothamnus sanguineus
species of plant
Calothamnus sanguineus, commonly known as silky-leaved blood flower, is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. The Noongar peoples know the plant as Boolgalla. It is an erect to spreading shrub with short, cylindrical leaves and red or white flowers with an unusual arrangement of stamens, often flowering in autumn, winter or spring. It was the first of its genus to be formally described.
Description
Calothamnus sanguineus is a shrub sometimes growing to a height of 2 metres (6.6 ft). Its leaves are 10–20 millimetres (0.4–0.8 in) long, circular in cross section and usually have many long, spreading hairs.
The flowers are bright red, sometimes white, and have 4 sepals, 4 petals and 4 claw-like bundles of stamens. The upper two bundles are much broader and longer than the lower two and the upper two are fused for much of their length. (Calothamnus torulosus has similar flowers but the upper stamen bundles are not fused in that species.) Flowering occurs from March to November and is followed by fruits which are woody capsules.
Taxonomy and naming
Calothamnus sanguineus was first formally described by French naturalist Jacques Labillardière in 1806 in Novae Hollandiae Plantarum Specimen from a specimen he collected in the first few months of 1793 during the d'Entrecasteaux expedition.
This brief starts where responsible research should: with the source description of “Calothamnus sanguineus” as species of plant. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the science & nature register because the source frames it as species of plant. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated May 17, 2026. The linked authority identifier is Q5023872. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1806 and 1793.
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This entry incorporates text from “Calothamnus sanguineus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.