Acradenia euodiiformis - Nov 99 Coorabakh National Park

''Acradenia euodiiformis'', commonly known as yellow satinheart or bonewood, is a species of tree that is

endemic Endemism is the state of a species being found only 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 foun ...

to eastern Australia. It has mostly

trifoliate The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets ...

leaves, the leaflets narrow elliptic to lance-shaped, with prominent oil

glands A gland is a Cell (biology), cell or an Organ (biology), organ in an animal's body that produces and secretes different substances that the organism needs, either into the bloodstream or into a body cavity or outer surface. A gland may also funct ...

, and

panicle In botany, a panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a p ...

s of white flowers. It grows in and near rainforest.

Description

''Acradenia euodiiformis'' is a tree that typically grows to a height of with stems up to in diameter. The trunk is usually irregular in shape, rarely cylindrical, sometimes with several stems. The bark is creamy, usually smooth, somewhat corky with vertical lines of pustules. The outer surface of live bark is in patterns of red and cream. The leaves are arranged in opposite pairs and are trifoliate (occasionally with two or five leaflets), the leaflets mostly long and wide, the leaf on a

petiole Petiole may refer to: *Petiole (botany), the stalk of a leaf, attaching the blade to the stem *Petiole (insect anatomy) In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and ...

long and the leaflets on petiolules long. The leaflets are

glabrous Glabrousness () is the technical term for a lack of hair, down, setae, trichomes, or other such covering. A glabrous surface may be a natural characteristic of all or part of a plant or animal, or be due to loss because of a physical condition, ...

and have prominent, large oil glands. The flowers are arranged in panicles long, the

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 Etymology The term ''sepalum'' ...

s long and hairy, the

petal Petals are modified leaves that form an inner whorl surrounding the reproductive parts of flowers. They are often brightly coloured or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''corol ...

s white or cream-coloured, long with woolly hairs. Flowers appear from September to January, followed by fruit that mature in January and are follicles long and ribbed.

Taxonomy

Yellow satinheart was first formally described in 1875 by

Ferdinand von Mueller Baron Sir Ferdinand Jacob Heinrich von Mueller, (; 30 June 1825 – 10 October 1896) was a German-Australian physician, geographer, and most notably, a botanist. He was appointed government botanist for the then colony of Victoria, Australia ...

in ''

Fragmenta phytographiae Australiae ''Fragmenta phytographiae Australiae'' is a series of papers written by the Victorian Government botanist Ferdinand von Mueller in which he published many of his approximately 2000 descriptions of new taxa of Australian plants. Including the p ...

''. Mueller gave it the name ''Bosistoa euodiiformis'' from specimens collected near the Clarence River by Mary Anne Wilcox. In 1977,

Thomas Gordon Hartley Thomas Gordon Hartley (9 January 1931 in Beaumont, Texas – 8 March 2016 in Canberra, Australia) was an American botanist. Biography In 1955 Hartley graduated in botany with the academic degree Bachelor of Science at the University of Wisconsin-E ...

changed the name to ''Acradenia euodiiformis'' in the ''

Journal of the Arnold Arboretum The Arnold Arboretum is a botanical research institution and free public park affiliated with Harvard University and located in the Jamaica Plain and Roslindale neighborhoods of Boston. Established in 1872, it is the oldest public arboretum in ...

''.

Distribution and habitat

''Acrodenia euodiiformis'' grows in and on the margins of rainforest and is found naturally from the

McPherson Range The McPherson Range is an extensive mountain range, a spur of the Great Dividing Range, heading in an easterly direction from near Wallangarra, Queensland, Wallangarra to the Pacific Ocean coastline. It forms part of the Scenic Rim on the border ...

in south-eastern Queensland to the

Hunter River Hunter River may refer to: *Hunter River (New South Wales), Australia *Hunter River (Western Australia) *Hunter River, New Zealand *Hunter River (Prince Edward Island), Canada **Hunter River, Prince Edward Island, community on Hunter River, Canada ...

in New South Wales at altitudes of . It is often seen in rainforests as an understorey tree, particularly on poorer sedimentary soils and along creeks, but sometimes on the more fertile basaltic soils and at relatively high altitudes.

References

{{Taxonbar, from=Q252807 euodiiformis Sapindales of Australia Trees of Australia Flora of New South Wales Flora of Queensland Plants described in 1875 Taxa named by Ferdinand von Mueller