Hemigenia

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Hemigenia
Hemigenia incana gnangarra.JPG
Hemigenia incana at Gooseberry Hill National Park
Scientific classification Red Pencil Icon.png
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, was 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>Podolepis</i>

Podolepis is a genus of the pussy's-toes tribe within the daisy family. It is endemic to Australia and can be found in every state.

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

Astroloma is an endemic Australian genus of around 20 species of flowering plants in the family Ericaceae. The majority of the species are endemic to Western Australia, but a few species occur in New South Wales, Victoria, Tasmania and South Australia.

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

Calytrix is a genus of shrubs in the family Myrtaceae described as a genus in 1806. They are commonly known as starflowers. Calytrix are endemic to Australia, occurring in the.

<i>Ptilotus</i>

Ptilotus R.Br. 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 family Haemodoraceae commonly known as cone flowers, endemic to the south west of Western Australia. They have leathery, strap-like leaves which arise from the base of the plant, sometimes from underground rhizomes. Flowers which usually occur in clusters on stalks which emerge from the bases of the leaves. Individual flowers have a short stalk with and six tepals which are either cream, yellow, orange or purple. The tepals join to form a short tube at the base with six similar stamens attached at the top of the tube.

<i>Pityrodia</i>

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.

Xerochloa is a genus of Australian and Southeast Asian plants in the grass family.

<i>Wilsonia</i> (plant)

Wilsonia is a genus of perennial subshrubs in the family Convolvulaceae. The genus is endemic to Australia, occurring in coastal saltmarshes and occasionally in inland saline areas.

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 small evergreen shrubs in the family Ericaceae. The genus is endemic to the Southwest Botanical Province in Western Australia.

<i>Rostellularia adscendens</i> Species of plant

Rostellularia adscendens is an Australian plant species in the family Acanthaceae. It grows to between 10 and 50 cm high.

<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>Microcorys</i> Genus of flowering plants

Microcorys is a genus of flowering plants in the family Lamiaceae, first described in 1810. The entire genus is endemic to Australia.

  1. Microcorys barbataR.Br - Western Australia
  2. Microcorys boxwoodNewbey - Western Australia
  3. Microcorys capitata(Bartl.) Benth. - Western Australia
  4. Microcorys cephalanthaB.J.Conn - Western Australia
  5. Microcorys ellipticaB.J.Conn - Northern Territory
  6. Microcorys eremophiloidesKenneally - Western Australia
  7. Microcorys ericifoliaBenth. - Western Australia
  8. Microcorys exsertaBenth. - Western Australia
  9. Microcorys glabra(Bartl.) Benth. - Western Australia
  10. Microcorys lenticularisF.Muell. - Western Australia
  11. Microcorys loganiaceaF.Muell. - Western Australia
  12. Microcorys longifloraF.Muell. - Western Australia
  13. Microcorys longifolia(Benth.) Benth. - Western Australia
  14. Microcorys macredieanaF.Muell. - Northern Territory
  15. Microcorys obovataBenth. - Western Australia
  16. Microcorys pimeloidesF.Muell. - Western Australia
  17. Microcorys purpureaR.Br. - Western Australia
  18. Microcorys queenslandicaC.T.White - Queensland
  19. Microcorys subcanescensBenth. - Western Australia
  20. Microcorys tenuifoliaBenth. - Western Australia
  21. Microcorys virgataR.Br. - Western Australia
  22. Microcorys wilsonianaB.J.Conn - Western Australia
<i>Phlebocarya</i>

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, commonly known as swamp isotome or blue star creeper, is a small herbaceous perennial in the family Campanulaceae.

<i>Velleia paradoxa</i> Species of plant

Velleia paradoxa, or spur velleia, is a small, softly pubescent perennial herb in the family Goodeniaceae, endemic to Australia. It is found in South Australia, Tasmania, Victoria, New South Wales and southern Queensland. It grows in sclerophyll forest and grassland. It has oval to elliptical leaves which are from 7–25 centimetres (3–10 in) long and it flowers mainly from August to February.

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 Parks and Wildlife.
  7. ↑ "Hemigenia". Royal Botanic Gardens Sydney: plantnet. Retrieved 26 January 2017.
  8. ↑ "Hemigenia biddulphiana". The State of Queensland (Department of Environment and Heritage Protection). Retrieved 26 January 2017.
  9. ↑ "Hemigenia". Australian Plant Census. Retrieved 10 November 2020.
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