| Grey rice flower | |
|---|---|
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Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malvales |
| Family: | Thymelaeaceae |
| Genus: | Pimelea |
| Species: | P. treyvaudii |
| Binomial name | |
| Pimelea treyvaudii | |
Pimelea treyvaudii, commonly known as grey rice-flower, [2] is a species of shrub in the family Thymelaeaceae. It has white flowers in spherical heads at the end of branches and is endemic to eastern Australia.
Pimelea treyvaudii is a small shrub 20–30 cm (7.9–11.8 in) high with smooth stems glabrous. Leaves are arranged opposite, narrowly elliptic 6–37 mm (0.24–1.46 in) long, 1–10 mm (0.039–0.394 in) wide, smooth, uniformly grey coloured, sometimes paler on the underside. The inflorescence consists of numerous flowers in a spherical shaped head. The 9-11 overlapping flower bracts are sessile, narrowly egg-shaped, narrower than nearby leaves, 6–15 mm (0.24–0.59 in) long, 1–4 mm (0.039–0.157 in) wide, smooth on the outside, hairy on inside, cream at the base, green toward the apex, sometimes a purplish colour. The bisexual white flowers are a floral tube, 10–12 mm (0.39–0.47 in) long, smooth inside, with long upward hairs above. The sepals spreading, 3–5 mm (0.12–0.20 in) long and smooth on the inside. The pedicel is hairy and the stamens may be longer or shorter than the sepals. The fruit are a dry nut thickly covered with fine hairs and forming into a densely clustered conical head. Flowering occurs from May to February. [2] [3] [4]
Pimelea treyvaudii was first formally described in 1912 by Alfred James Ewart and Bertha Rees from an unpublished description by Ferdinand von Mueller and the description was published in Proceedings of the Royal Society of Victoria . [5] [6] The specimens were collected near Cudgewa by H.H.Treyvaud. [4]
Grey rice-flower grows from Gowan (north-east of Orange) in New South Wales and south-east, to north-eastern Victoria, in woodland, occasionally on dry rocky hillsides in mountainous country. [4] [2]
Pimelea microcephala, commonly known as mallee rice-flower or shrubby rice-flower is a species of flowering plant in the family Thymelaeaceae and is endemic to mainland Australia. It is an erect shrub with compact heads of male or female, white to yellow or greenish flowers on separate plants, the heads surrounded by 2 or 4 leaf-like involucral bracts.
Pimelea humilis, also known as common riceflower or dwarf riceflower, is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern Australia. It is an erect or scrambling shrub with hairy stems, elliptic to lance-shaped leaves and heads of 12 to 52 of creamy-white, bisexual or female flowers.
Pimelea flava is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern Australia. It is a shrub with narrowly elliptic to egg-shaped leaves arranged in opposite pairs, and compact clusters of 9 or more flowers with 2 or 4 elliptic to circular involucral bracts at the base. The flowers and bracts are white or yellow, depending on subspecies.
Pimelea hewardiana, commonly known as forked rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern continental Australia. It is a shrub with narrowly elliptic leaves and head-like clusters of 7 to 34 unisexual yellow flowers.
Pimelea serpyllifolia, commonly known as thyme riceflower, is a species of flowering plant in the family Thymelaeaceae and is endemic to southern Australia. It is an erect shrub with narrowly elliptic to spatula-shaped leaves, and compact heads of 4 to 12 yellow, yellowish-green or white flowers surrounded by 2 or 4 leaf-like involucral bracts. Male and female flowers are borne on separate plants.
Pimelea ciliolaris is a species of flowering plant in the family Thymelaeaceae and is endemic to a restricted area of New South Wales. It is a stunted shrub with narrowly elliptic leaves and heads of densely hairy, cream-coloured to pale yellow flowers.
Pimelea drupacea, commonly known as cherry rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern Australia. It is a shrub with elliptic leaves arranged in opposite pairs, and head-like clusters of white, tube-shaped flowers surrounded by two or four leaves.
Pimelea pauciflora, commonly known as poison rice-flower, is a species of shrub in the family Thymelaeaceae. It has small yellow-lime flowers and green, smooth fleshy leaves, and is endemic to Eastern Australia.
Pimelea pagophila, commonly known as Grampians rice-flower, is a species of shrub in the family Thymelaeaceae. It has a restricted distribution, white flowers in spherical heads at the end of branches, green leaves arranged in opposite pairs and is endemic to Victoria, Australia.
Pimelea aeruginosa is a species of small shrub in the family Thymelaeaceae. It is a small shrub with yellow flowers and is endemic to Western Australia.
Pimelea ammocharis is a species of small shrub in the family Thymelaeaceae. It is a small shrub with white-yellow to orange flowers and is endemic to Western Australia.
Pimelea curviflora, also known as curved rice-flower, is a shrub in the family Thymelaeaceae and is endemic to Australia. It is a small, hairy shrub with greenish-yellow or red tubular flowers.
Pimelea axiflora, commonly known as bootlace bush, is a small shrub in the family Thymelaeaceae and is endemic to Australia. It is a small shrub with whitish flowers on mostly smooth stems.
Pimelea ciliata, commonly known as white banjine, is a species of flowering plant in the family Thymelaeaceae. It is a small shrub with white flowers and is endemic to Western Australia.
Pimelea biflora, commonly known as matted rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern continental Australia. It is a prostrate, mat-forming shrub with elliptic leaves and dark red flowers always arranged in pairs on the ends of branches.
Pimelea cremnophila, commonly known as gorge rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to a restricted area of New South Wales. It is an erect shrub with narrowly elliptic to narrowly egg-shaped leaves arranged in opposite pairs, and groups of up to four flowers that are sometimes male-only or female-only.
Pimelea leptospermoides, commonly known as serpentine rice flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to Queensland. It is a shrub with narrowly egg-shaped to elliptic leaves and white, tube-shaped flowers arranged in groups of up to 7.
Pimelea phylicoides, commonly known as heath rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to southern continental Australia. It is an erect shrub with densely hairy young stems, narrowly egg-shaped to elliptic leaves, and heads of white flowers surrounded by 3 to 6 involucral bracts.
Pimelea stricta, commonly known as gaunt rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern continental Australia. It is an erect shrub with narrowly elliptic or linear leaves, and compact heads of densely hairy, creamy-white to yellow flowers surrounded by 4 egg-shaped involucral bracts.
Pimelea subvillifera is a species of flowering plant in the family Thymelaeaceae and is native to thesouth-west of Western Australia and to South Australia. It is usually an erect shrub and has elliptic leaves and heads of white flowers surrounded by 8 to 18 narrowly egg-shaped involucral bracts.