Austrocallerya

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Austrocallerya
Austrocallerya megasperma.jpg
Austrocallerya megasperma in the Australian National Botanic Gardens
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Wisterieae
Genus: Austrocallerya
J.Compton & Schrire [1]
Synonyms [2]
  • Millettia sect. AustromillettiaDunn

Austrocallerya is a genus of flowering plants belonging to the subfamily Faboideae in the family Fabaceae. [3] [1] They are robust, twining woody vines. [2]

Contents

Its native range is from New Guinea to eastern Australia and islands in the Southern Pacific. [1]

Description

Austrocallerya megasperma growing around a tree trunk CmegaspermaAlexFCA1.jpg
Austrocallerya megasperma growing around a tree trunk
Austrocallerya pilipes Austrocallerya pilipes rfk4672.jpg
Austrocallerya pilipes

Species of Austrocallerya are a robust twining woody vines, reaching 2–20 m (7–66 ft) high. The mature stems have flaky, peeling bark. The leaves are evergreen and generally have 4–18 paired leaflets plus a terminal leaflet. The leaflets are 3–14 cm (1.2–5.5 in) long by 1–7 cm (0.4–2.8 in) wide. The robust inflorescence is a many-flowered terminal panicle, 6–40 cm (2–16 in) long. The individual flowers are 11–16 mm (0.4–0.6 in) long and have the general shape of members of the subfamily Faboideae. The standard petal is 12–22 mm (0.5–0.9 in) long by 11–18 mm (0.4–0.7 in) wide and of various colours from whitish to purple, with a greenish yellow or lime green nectar guide. The purple or maroon wing petals are equal in length to the keel at 11–14 mm (0.4–0.6 in) long by 5–6 mm (0.2–0.2 in) wide, with short basal claws. The keel petals are 11–14 mm (0.4–0.6 in) long by 4–6 mm (0.2–0.2 in) wide, united into a cup. They are dark reddish, purple or maroon in two of the species and white with purple tips in A. megasperma. Nine of the stamens are fused together, the other is free; all curve upwards at the apex. The inflated seed pods are 7–23 cm (2.8–9.1 in) long by 3–5.2 cm (1.2–2.0 in) wide, with hollow cavities holding generally 2–6 seeds. [2]

Taxonomy

In 1912, Stephen Troyte Dunn recognized the distinctiveness of three Australasian species then placed in the genus Millettia , and created a separate section, Austromillettia, for them. [2] [4] A 2019 molecular phylogenetic study found that the three species did not belong either in the genus Millettia or in the genus Callerya where they had later been placed, but instead formed a distinct clade, sister to Padbruggea , within a newly expanded tribe Wisterieae. Accordingly, the genus Austrocallerya was established. The genus name refers to the southern hemisphere distribution of the species and their former placement in Callerya. [2]

Austrocallerya species can be distinguished from Padbruggea by a number of features, including the more upright inflorescences, the broader standard petals, and the more linear seed pods. [2]

Species

As of January 2023, Plants of the World Online accepted three species: [1]

Distribution

Austrocallerya species are native to New Guinea, Queensland and New South Wales in eastern Australia, and various islands in the Southern Pacific (the Cook Islands, New Caledonia, Norfolk Island, the Solomon Islands, the Tuamotus and Tubuai). [1]

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References

  1. 1 2 3 4 5 "Austrocallerya J.Compton & Schrire | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 20 January 2023.
  2. 1 2 3 4 5 6 Compton, James A.; Schrire, Brian D.; Könyves3, Kálmán; Forest, Félix; Malakasi, Panagiota; Sawai Mattapha & Sirichamorn, Yotsawate (2019). "The Callerya Group redefined and Tribe Wisterieae (Fabaceae) emended based on morphology and data from nuclear and chloroplast DNA sequences". PhytoKeys (125): 1–112. doi: 10.3897/phytokeys.125.34877 . PMC   6610001 . PMID   31303810.{{citation}}: CS1 maint: numeric names: authors list (link)
  3. "PlantNET - FloraOnline". plantnet.rbgsyd.nsw.gov.au. Retrieved 2022-06-07.
  4. Dunn, Stephen Troyte (1912). "A Revision of the Genus Millettia, Wight et Arn". Botanical Journal of the Linnean Society. 41 (280): 123–243. doi:10.1111/j.1095-8339.1912.tb02482.x.