''Allocasuarina grampiana'', commonly known as Grampians sheoak, is a species of flowering plant in the family

Casuarinaceae The Casuarinaceae are a family of dicotyledonous flowering plants placed in the order Fagales, consisting of four genera and 91 species of trees and shrubs native to eastern Africa, Australia, Southeast Asia, Malesia, Papuasia, and the Pacifi ...

and is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the

Grampians National Park The Grampians National Park commonly referred to as The Grampians, is a national park located in the Grampians region of Victoria, Australia. The Jardwadjali name for the mountain range itself is Gariwerd. The national park is situated betwee ...

in Victoria. It is a

dioecious Dioecy (; ; adj. dioecious , ) is a characteristic of a species, meaning that it has distinct individual organisms (unisexual) that produce male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproductio ...

shrub that has branchlets up to long, the leaves reduced to scales in whorls of six or seven, the fruiting cones long containing winged seeds (samaras) about long.

Description

''Allocasuarina grampiana'' is a dioecious shrub that typically grows to a height of and has smooth bark. Its branchlets are more or less erect, up to long, the leaves reduced to erect to slightly spreading, scale-like teeth long, arranged in whorls of six or seven around the branchlets. The sections of branchlet between the leaf whorls (the "articles") are long, wide and have a waxy covering. Male flowers are arranged in spikes long, the

anthers The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filam ...

long. Female cones are cylindrical, on a peduncle long. Mature cones are long and in diameter, the samaras long.

Taxonomy

''Allocasuarina grampiana'' was first formally described in 1989 by Lawrie Johnson in the '' Flora of Australia'' from specimens collected b
David Eric Symon
on the upper slopes of Mount Rosea in 1965. The specific epithet, (''grampiana'') refers to the Grampians National Park, to where this species is restricted.

Distribution and habitat

Grampians sheoak is restricted to the Grampians National Park, where it grows on sandstone outcrops.

Conservation status

''Allocasuarina grampiana'' is listed as "endangered" under the Victorian Government ''

Flora and Fauna Guarantee Act 1988 The ''Flora and Fauna Guarantee Act 1988'', also known as the ''FFG Act'', is an act of the Victorian Government designed to protect species, genetic material and habitats, to prevent extinction and allow maximum genetic diversity within the Au ...

References

{{Taxonbar, from=Q15375808 grampiana Flora of Victoria (state) Fagales of Australia Plants described in 1989 Taxa named by Lawrence Alexander Sidney Johnson Dioecious plants