Hemigenia

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Hemigenia
Hemigenia incana gnangarra.JPG
Hemigenia incana at Gooseberry Hill National Park
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Subfamily: Prostantheroideae
Genus: Hemigenia
R.Br. [1]
Synonyms [2]
  • AtelandraLindl.
  • ColobandraBartl.

Hemigenia is a genus of flowering plants in the mint family, Lamiaceae and is endemic to Australia where most species occur in Western Australia, although some are also found in New South Wales and Queensland. Plants in this genus are shrubs or bushes with simple leaves and tube-shaped flowers with the petals forming two "lips" - the upper one with two lobes and the lower one with three.

Contents

Description

Plants in the genus Hemigenia are shrubs or bushes with simple leaves which are arranged either in opposite pairs or in whorls. The flowers are arranged singly or in groups in upper leaf axils, often appearing to form a spike of flowers. There are five sepals which are joined at their base to form a tube. The five petals form a tube with two "lips" - an upper lip with two lobes and a lower one with three. There are four stamens. [3]

Plants in this genus can be distinguished from those in the similar and closely related Hemiandra by their less strongly odoriferous leaves and from Prostanthera , Microcorys and Westringia by technical differences in their stamens.

Taxonomy

The genus Hemigenia was first formally described in 1810 by Robert Brown and the description was published in Prodromus Florae Novae Hollandiae . Brown nominated Hemigenia purpurea the type species. [1] [4] The genus name is derived from the Ancient Greek words hemi [5] :392 and genias meaning "a beard" [5] :365 referring to a part of the anthers. [3]

Distribution

Hemigenia species are mostly endemic to Western Australia, but H. cuneifolia occurs in New South Wales and Queensland, H. biddulphiana grows in Queensland and H. purpurea in New South Wales. [6] [7] [8]

Species list

The following is a list of Hemigenia species accepted by the Australian Plant Census as at November 2020: [9]

Related Research Articles

<i>Hemiandra</i> Genus of flowering plants

Hemiandra is a genus of nine species of flowering plants of the family Lamiaceae and is endemic to Western Australia. Plants in the genus Hemiandra are shrubs with sessile leaves arranged in opposite pairs, petals with five lobes arranged in two "lips" and the fruit a capsule usually containing four nuts.

Glossodia, commonly known as waxlip orchids, is a genus of mostly purple orchids from Australia. The genus was first formally described in 1810 by the prolific Scottish botanist Robert Brown who published his description in Prodromus Florae Novae Hollandiae.

<i>Isotoma</i> (plant) Genus of flowering plants

Isotoma is a genus of annual and perennial herbs in the family Campanulaceae and are native to Australia and New Zealand.

<i>Lechenaultia</i> Genus of plants

Lechenaultia is a genus of flowering plants in the family Goodeniaceae, the species native to Australia with one species also occurring in New Guinea. Plants in the genus Lechenaultia are glabrous shrubs or herbs with needle-shaped leaves, more or less sessile flowers with five sepals and five blue, white, or yellow and red petals in two unequal lobes, the fruit an elongated capsule.

<i>Dampiera</i> Genus of flowering plants

Dampiera is a genus of about 70 species of flowering plants in the family Goodeniaceae, all of which are endemic to Australia. Plants in the genus Dampiera are subshrubs or herbs with sessile leaves, flowers with five small sepals and blue, violet or pink, rarely white, two-lipped flowers.

<i>Calothamnus</i> Genus of flowering plants

Calothamnus is a genus of shrubs in the family Myrtaceae and is endemic to the south-west of Western Australia. The common names one-sided bottlebrush or claw flower are given to some species due to their having the flowers clustered on one side of the stem or because of the claw-like appearance of their flowers. Calothamnus species are generally medium to tall woody shrubs with crowded leaves. In most species the leaves are crowded and linear in shape, and the flowers are usually arranged in dense clusters. The petals are small and fall off the flower soon after it opens but the stamens are long, numerous and usually bright red.

<i>Acrotriche</i> Genus of flowering plants

Acrotriche is a genus of about 18 species of flowering plants in the family Ericaceae, occurring in all states of Australia except the Northern Territory. Plants in the genus Acrotriche are shrubs with hairy branchlets, leaves with more or less parallel veins and small flowers with 5 sepals and petals joined at the base to form a bell-shaped to cylindrical tube with hairs and stamens in the throat.

<i>Calytrix</i> Genus of flowering plants

Calytrix is a genus of about 83 species of flowering plants, commonly known as star flowers, in the family Myrtaceae and is endemic to Australia. Plants in the genus Calytrix are small to large shrubs with small, spreading and more or less round leaves, the flowers arranged singly in leaf axils. The flowers are bisexual with 5 overlapping sepals with a long awn, and many stamens.

<i>Ptilotus</i> Family of shrubs

Ptilotus is a genus of approximately 120 species of annual and perennial herbs and shrubs in the family Amaranthaceae. All species are native to mainland Australia, although one species, Ptilotus spathulatus (R.Br.) Poir., also occurs in Tasmania and another, Ptilotus conicus R.Br., in Malesia on the islands of Flores and Timor. Most of the diversity is in Western Australia, particularly in the Pilbara. Common names for species in this genus include mulla mulla, foxtails, pussy tails and lamb's tails. The genus was first formally described by botanist Robert Brown in Prodromus Florae Novae Hollandiae in 1810. In family-level phylogenetic studies, Ptilotus has been placed within a clade informally known as the 'aervoids'. It has been resolved as monophyletic and is closely related to Aerva Forssk. An interactive key to the species of Ptilotus is available at KeyBase.

<i>Conostylis</i> Genus of flowering plants

Conostylis is a genus of perennial herbs in the Haemodoraceae family, commonly known as cone flowers. All species are endemic to the south west of Western Australia.

<i>Pityrodia</i> Genus of flowering plants

Pityrodia is a genus of flowering plants in the mint family, Lamiaceae and is endemic to Australia, most species occurring in Western Australia, a few in the Northern Territory and one in Queensland. Plants in this genus are shrubs with five petals joined to form a tube-shaped flower with four stamens of unequal lengths.

<i>Lepyrodia</i> Genus of flowering plants

Lepyrodia is a plant genus in the family Restionaceae, described as a genus in 1810.

<i>Trochocarpa</i> Genus of flowering plants

Trochocarpa is a genus of about 16 species of flowering plants in the family Ericaceae native to Australia, New Guinea, Borneo and Malesia. Plants in the genus Trochocarpa are shrubs or small trees, the leaves with more or less parallel veins, flowers in small clusters, each with 5 sepals, petals joined to form a cylindrical or bell-shaped tube, and the fruit a more or less spherical drupe.

<i>Ectrosia</i> Genus of grasses

Ectrosia is a genus of Asian, Australian, and Pacific Island plants in the grass family.

<i>Andersonia</i> (plant) Genus of flowering plants

Andersonia is a genus of mostly small, evergreen shrubs in the family Ericaceae and is endemic to the Southwest Botanical Province in Western Australia.

<i>Hemigenia purpurea</i> Species of plant

Hemigenia purpurea, with the common name of narrow-leaved hemigenia is a small plant growing in the Sydney and Nowra districts of eastern Australia. Often found in poor soils in heathland with a relatively high rainfall. By the coast or in the Blue Mountains.

<i>Anisomeles</i> Genus of flowering plants

Anisomeles is a genus of herbs of the family Lamiaceae and is native to China, the Indian Subcontinent, Southeast Asia, New Guinea, Australia, Madagascar, and some Pacific and Indian Ocean islands. Plants in the genus Anisomeles have small, flat, narrow elliptic to narrow e.g.-shaped leaves arranged in opposite pairs, the edges of the leaves sometimes wavy or serrated. The flowers are arranged in groups, with five sepals and five petals in two "lips", the lower lip with three lobes, the middle lobe much longer than the side lobes. There are four stamens that extend beyond the petals and a single style in a depression on top of the ovary. The fruit is a schizocarp with four nutlets containing small seeds.

<i>Chloanthes</i> Genus of flowering plants

Chloanthes is a genus of four species of flowering plants in the family Lamiaceae and is endemic to Australia. Plants in this genus are shrubs with hairy foliage, blistered or wrinkly leaves and flowers with five petals fused at the base, usually with two "lips".

<i>Phlebocarya</i> Genus of flowering plants

Phlebocarya is a genus of herbs in the family Haemodoraceae, first described as a genus in 1810. The entire genus is endemic to the southwestern part of Western Australia.

<i>Isotoma fluviatilis</i> Species of plant

Isotoma fluviatilis, the swamp isotome or blue star creeper, is a small herbaceous perennial plant in the family Campanulaceae, native to Australia.

References

  1. 1 2 "Hemigenia". APNI. Retrieved 26 January 2017.
  2. "Hemigenia". APNI. Retrieved 26 January 2017.
  3. 1 2 "Hemigenia". FloraBase. Retrieved 26 January 2017.
  4. Brown, Robert (1810). Prodromus Florae novae Hollandiae. London. p. 502. Retrieved 26 January 2017.
  5. 1 2 Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press.
  6. "Hemiandra". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  7. "Hemigenia". Royal Botanic Gardens Sydney: plantnet. Retrieved 26 January 2017.
  8. "Hemigenia biddulphiana". The State of Queensland (Department of Environment and Heritage Protection). Archived from the original on 2 February 2017. Retrieved 26 January 2017.
  9. "Hemigenia". Australian Plant Census. Retrieved 10 November 2020.