Polycalymma
| Polycalymma | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Gnaphalieae |
| Genus: | Polycalymma F.Muell. & Sond. |
| Species: | P. stuartii
|
| Binomial name | |
| Polycalymma stuartii | |
| Synonyms[1] | |
|
Myriocephalus stuartii (F.Muell. & Sond. ex F.Muell. & Sond.) Benth. | |
Polycalymma stuartii, the poached egg daisy, is an Australian daisy found abundantly on sand plains and dunefields.[2] Its common name is derived from the poached egg-like appearance of its white flower and yellow centre. It is the only known species of the genus Polycalymma; a member of the tribe Gnaphalieae within the family Asteraceae.[3][4][5] [6][7]
Origin[edit]
The poached egg daisy was named after McDouall Stuart[8] and is Indigenous to a large area of Central Australia. The first scientific description was written in 1853.
Alternative names [9][edit]
- ham and eggs daisy
- fried egg plant
- bachelors' buttons
Habitat[edit]
The poached egg daisy is found abundantly during good seasons in open communities on sand plans and dune fields[10] in Western Australia, Northern Territory, South Australia, Queensland, New South Wales and Victoria.[11][12] This annual daisy thrives in light to medium soil, open sunny communities and is resistant to drought and frost.
Description[9][13][14][edit]
Cotyledons[edit]
Two (dicot) narrow lance shaped cotyledon with a tapered base, pointed tips, edges that convex to parallel and a hairless surface.
First leaves[edit]
Narrow lance shaped first leaves with pointed tips and covered in dense short hair.
Leaves[edit]
Alternating leaves with no petiole. leaves are a light green colour, measure 20-70mm long with narrow parallel sides to lance shape with pointed tip, present woolly hairs on upper side and sticky hairs on underside and have smooth edges.
Stems[edit]
Stem is erect and stout, standing 100-500mm tall, somewhat tufted ad is woolly or very sticky with glandular hairs.
Flower head[edit]
Flower heads are compound, hemispherical and white with a yellow centre resembling a poached egg and measure 20-40mm in diameter.
Flowers[edit]
Flowers are tubular, bisexual and yellow with white 5-7mm long petals.
Fruit[edit]
Black cylindrical achene that are woolly or silky with long white hairs.
Roots[edit]
Taproot system.
Ecology[edit]
8 week lifecycle
References[edit]
- ^ Flann, C (ed) 2009+ Global Compositae Checklist
- ^ "Plants at the AALBG: Poached egg daisy, (Polycalymma stuartii)". Friends of the Australian Arid Lands Botanic Garden. 2012.
- ^ Mueller, Ferdinand Jacob Heinrich von & Sonder, Otto Wilhelm. 1853. Linnaea 25: 494 in Latin
- ^ "Tropicos | Name - Polycalymma F. v. Mueller & Sonder". www.tropicos.org. Retrieved 2018-05-16.
- ^ "IPNI Plant Name Details". www.ipni.org. Retrieved 2018-05-16.
- ^ "Friends of the Australian Arid Lands Botanic Garden - Plants: Poached egg daisy, Polycalymma stuartii". www.australian-aridlands-botanic-garden.org. Retrieved 2018-05-16.
- ^ Australia, Atlas of Living. "Polycalymma | Atlas of Living Australia". bie.ala.org.au. Retrieved 2018-05-16.
- ^ Government, Northern Territory (2018-03-25). "Poached egg daisy". alicespringsdesertpark.com.au. Retrieved 2019-06-10.
- ^ a b "Poached-egg Daisy". www.herbiguide.com.au. Retrieved 2019-06-10.
- ^ "Friends of the Australian Arid Lands Botanic Garden - Plants: Poached egg daisy, Polycalymma stuartii". www.australian-aridlands-botanic-garden.org. Retrieved 2019-06-10.
- ^ "COMPOSITAE (R) – Bushland Conservation Pty Ltd". Retrieved 2019-06-10.
- ^ "Tree Element /tree/51308853/51245324". biodiversity.org.au. Retrieved 2019-06-10.
- ^ "Factsheet - Polycalymma stuartii". keys.lucidcentral.org. Retrieved 2019-06-10.
- ^ "PlantNET - FloraOnline". plantnet.rbgsyd.nsw.gov.au. Retrieved 2019-06-10.