Calothamnus quadrifidus

Calothamnus quadrifidusCalothamnus quadrifidus (Yellow Form)

Known as the One-sided Bottlebrush, Calothamnus quadrifidus is in the Myrtle family Myctaceae. It is also known as the Four-Cleft Calothamnus and is endemic to the south-west region of Western Australia.

The shrub has red, four-part flowers, although there are also the less common white and yellow forms. The four petals fall off soon after the flower opens. The stamens are arranged in 4 claw-like bundles, all about the same length. After flowering the fruit capsule form. These are a woody and barrel-shaped up to 6–14 mm long. The common name alludes to the arrangement of the flowers in the inflorescence which line up on one side of the stem.

It has pine-like foliage that are grey-green and covered with soft hairs. The leaves can be variable depending on the sub-species.

The leaves are about 10–50 mm long and 0.8–10 mm wide. In cross section, the leaves are circular, although in some subspecies they are flat. The are usually a small shrub, but can grow to a height of 5 metres.

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• Scientific classification
• Kingdom: Plantae
• Phylum: Charophyta
• Class: Equisetopsida
• Subclass: Magnoliidae
• Superorder: Rosanae
• Order: Myrtaceae
• Family: Myrtaceae
• Genus: Calothamnus
• Species: Calothamnus quadrifidus

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Calothamnus quadrifidusCalothamnus quadrifidus (Yellow Form)

FloraFlora in Australia Flora Index Acacia Anigozanthos (Kangaroo Paws) Annual Yellowtop Apium prostratum subsp. prostratum var filiforme Apple Bush (Pterocaulon sphacelatum) Australian Bluebell Australian Gossypium Banksia Batswing Coral Tree Billy Buttons Birdsville Indigo Blue Pincushion Bush Banana Callistemon Callitris drummondii (Drummond’s Cypress Pine) Calothamnus quadrifidus Cape Honeysuckle Cassia fistula (Golden Shower) Cattle Bush Common Heath Crotalaria Darwinia wittwerorum (Wittwer’s Mountain Bell) Daviesia oppositifolia (Rattle-pea) Desert Oaks Drumsticks Eremophila Eucalyptus Ficus Flannel Cudweed (Actinobole uliginosum) Georges Indigo Goatshead Burr (Sclerolaena bicornis) Golden Everlasting Goodenia Gossypium Grass and Grasses Grass Trees Grevillea Grey Germander Hakea Kapok Bush (Aerva javanica) Lambertia sp Leptospermum MacDonnell Ranges Cycad Maireana scleroptera Mexican Poppy Minnie Daisy Mistletoe Family Nardoo Native Apricot Nicotiana megalosiphon subspecies sessilifolia Nuytsia floribunda Orange Spade Flower Orchidaceae Parakeelyas (Calandrinia) Pebble Bush (Stylobasium spathulatum) Perennial Yellow Top Pink Everlasting Pink Rock Wort Poached Egg Daisy Portulaca Proteaceae Ptilotus Quandong Resurrection Fern Rosy Dock Ruby Saltbush Santalum Solanum Spike Centaury Spinifex Storkbill (Erodum cygnorum) Striped Mint Bush Sturt’s Desert Pea Sturt’s Desert Rose Tall Saltbush Tangled Leschenaultia Tar Vine Tribulus eichlerianus Upside-down Plant Urodon dasyphylla Variable Daisy Waratah (Telopea) Wertabona Daisy White Cedar (Melia azedarach) White Indigo White Paper Daisy Wild Passionfruit Wild Stock Woolly-Headed Burr Daisy Woolly Bush Yellow-keeled Swainsona

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