Cryptandra orbicularis

Cryptandra orbicularis
	In Expedition National Park
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Rosales
Family:	Rhamnaceae
Genus:	Cryptandra
Species:	C. orbicularis
Binomial name
	Cryptandra orbicularis; A.R.Bean

Last updated January 22, 2024

Cryptandra orbicularis is a species of flowering plant in the family Rhamnaceae and is endemic to south-eastern Queensland. It is a shrub with more or less round or kidney-shaped leaves and white to creamy-white, tube-shaped flowers.

Description

Cryptandra orbicularis is a shrub that typically grows to a height of 30–90 cm (12–35 in), its branchlets covered with white, star-shaped hairs but not spiny. Its leaves are more or less round, kidney-shaped or sometimes egg-shaped with the narrower end towards the base, 1.3–2.5 mm (0.051–0.098 in) long and 1.3–2.2 mm (0.051–0.087 in) wide. There are narrowly triangular stipules 0.9–1.2 mm (0.035–0.047 in) long and joined to each other at the base of the petiole. Both surfaces of the leaves are more or less glabrous. The flowers are borne singly in leaf axils with several elliptic bracts at the base. The sepals are white to creamy-white, forming a cylindrical to bell-shaped tube 0.9–1.1 mm (0.035–0.043 in) long with spreading lobes 1.3–1.5 mm (0.051–0.059 in) long and hairy. The petals protrude 0.8–1.1 mm (0.031–0.043 in) beyond the sepal tube, and form a hood over the stamens. Flowering has been observed from August to October, and the fruit is a schizocarp.^[2]

Taxonomy and naming

Cryptandra orbicularis was first formally described in 2004 by Anthony Bean in the journal Austrobaileya from specimens collected in Expedition National Park in 2000.^[2]^[3] The specific epithet (orbicularis) refers to the usual shape of the leaves.^[2]

Distribution and habitat

This cryptandra grows in shrubby woodland between Cracow and Rolleston in south-eastern Queensland.^[2]

Related Research Articles

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Cryptandra gemmata is a species of flowering plant in the family Rhamnaceae and is endemic to the far north of the Northern Territory. It is a shrub with clustered linear leaves and white to creamy-white, tube-shaped flowers.

Stenanthemum argenteum is a species of flowering plant in the family Rhamnaceae and is endemic to a restricted part of Queensland. It is a shrub with hairy branches, lance-shaped to egg-shaped leaves with the narrower end towards the base, and heads of about seven hairy white, tube-shaped flowers.

Cryptandra graniticola is a flowering plant in the family Rhamnaceae and is endemic to southern Western Australia. It is an upright, spreading shrub with spiny branchlets, linear to narrowly egg-shaped leaves and clusters of white, tube-shaped flowers.

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Cryptandra lanosiflora is a species of flowering plant in the family Rhamnaceae and is endemic to eastern Australia. It is a shrub with many branches, linear leaves, and hairy, white tube-shaped flowers.

Cryptandra longistaminea is a species of flowering plant in the family Rhamnaceae and is endemic to eastern Australia. It is a shrub with many branches, egg-shaped or elliptic to linear leaves, and clusters of white, tube-shaped flowers.

Cryptandra pendula is a flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a shrub with linear leaves and clusters of 5 to 15 pendulous, white, tube-shaped flowers.

Cryptandra pogonoloba is a species of flowering plant in the family Rhamnaceae and is endemic to south-eastern Queensland. It is a shrub with linear to lance-shaped leaves with the narrower end towards the base, and white to creamy-white, tube-shaped flowers.

Cryptandra propinqua is a species of flowering plant in the family Rhamnaceae and is endemic to south-eastern continental Australia. It is a shrub with many branches, more or less linear leaves, and spike-like clusters of white, tube-shaped flowers.

Stenanthemum tridentatum is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a prostrate to upright shrub with sparsely hairy young stems, egg-shaped to fan-shaped leaves, and creamy white or creamy-yellow flowers arranged singly or in groups of up to three.

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Cryptandra triplex is a species of flowering plant in the family Rhamnaceae and is endemic to the north of the Northern Territory. It is a hairy shrub with narrowly elliptic to lance-shaped or egg-shaped leaves and white to cream-coloured or yellowish, tube-shaped flowers arranged singly or in groups of up to 5 in leaf axils, near the ends of branches.

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References

↑ "Cryptandra orbicularis". Australian Plant Census. Retrieved 23 January 2023.
1 2 3 4 Bean, Anthony R. (2004). "New species of Cryptandra Sm. and Stenanthemum Reissek (Rhamnaceae) from northern Australia". Austrobaileya. 6 (4): 922–924. Retrieved 23 January 2023.
↑ "Cryptandra orbicularis". APNI. Retrieved 23 January 2023.

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[APC-1] "Cryptandra orbicularis". Australian Plant Census. Retrieved 23 January 2023.

[Bean-2] 1 2 3 4 Bean, Anthony R. (2004). "New species of Cryptandra Sm. and Stenanthemum Reissek (Rhamnaceae) from northern Australia". Austrobaileya. 6 (4): 922–924. Retrieved 23 January 2023.

[APNI-3] "Cryptandra orbicularis". APNI. Retrieved 23 January 2023.

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