Biology:Callitris gracilis

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Short description: Species of plant

Callitris gracilis
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Pinophyta
Class: Pinopsida
Order: Cupressales
Family: Cupressaceae
Genus: Callitris
Species:
C. gracilis
Binomial name
Callitris gracilis
R.Baker
Synonyms

Callitris gracilis subsp. murrayensis (J.Garden) K.D.Hill
Callitris preissii var. murrayensis (J.Garden) Silba
Callitris preissii subsp. murrayensis J.Garden[1]

Callitris gracilis, commonly known as slender cypress-pine is a conifer in the family Cupressaceae, native to southern Australia.

Description

It is a broad conical tree growing up to 20 m high.[2] The leaves are reduced to tiny scales, which clasp the flexible green stems.[3] It is monoecious, with the tiny male and female cones occurring on the same tree. The male cones are capable of shedding huge clouds of pollen in winter.[3] The mature woody globe-shaped cone is 2.5-4 cm in diameter, with six thick valvate scales that open at maturity to release papery-winged seeds.[4] The cones may persist on the tree for many years, and each one can hold up to 30 seeds.[5]

Leaves and mature cone

Taxonomy

Callitris gracilis was formerly included in Callitris preissii, but that name is now restricted to plants from the Perth area.[2]

Distribution and habitat

Callitris gracilis can be found in Western Australia, South Australia, Victoria and New South Wales.[5]

Ecology

Several species of parrot eat the seeds in the maturing cones.[3]

Uses

Indigenous people from some areas use the foliage to make infusions for the relief of coughs and colds, and to make smoke medicine.[5]

The tree was highly prized by European settlers for its straight trunk and termite-resistant wood.[3]

In cultivation they make attractive feature trees for large gardens or parks.[6] Seed should be stratified before sowing in late winter.[5] Once established, it becomes a long-lived and hardy evergreen tree.[3]

References

  1. "Callitris gracilis R.T.Baker". https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:261770-1. 
  2. 2.0 2.1 "Callitris gracilis". https://vicflora.rbg.vic.gov.au/flora/taxon/bcfabb75-9e72-486b-b7ab-75894375fafb. 
  3. 3.0 3.1 3.2 3.3 3.4 Bagust, Phil; Tout-Smith, Lynda (2010). The Native Plants of Adelaide (2nd ed.). Wakefield Press. pp. 14. ISBN 978-1-86254-879-4. 
  4. Prescott, Ann (2012). It's Blue With Five Petals - Wildflowers of the Adelaide Region (2nd ed.). Ann Prescott. pp. 376. ISBN 978-0-646-59298-5. 
  5. 5.0 5.1 5.2 5.3 Bonney, Neville (2021). From One Small Seed a Forest is Born. South Australia: Neville Bonney. pp. 172. ISBN 978-0-6483900-3-9. 
  6. "Callitris gracilis". https://www.urrbraewetlandlc.org/uploads/9/8/6/1/9861225/callitris_gracillis.pdf. 

Wikidata ☰ Q15040901 entry