Marianthus granulatus

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Marianthus granulatus
Priority Four
Priority Four — Rare Taxa (DEC)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Apiales
Family: Pittosporaceae
Genus: Marianthus
Species:
M. granulatus
Binomial name
Marianthus granulatus
Synonyms[1]
  • Billardiera granulata (Turcz.) E.M.Benn.
  • Marianthus parviflorus F.Muell.
  • Oncosporum granulatum Turcz.

Marianthus granulatus is a species of flowering plant in the family Pittosporaceae and is endemic to a restricted part of the southwest of Western Australia. It is a twining shrub or climber with often clustered, egg-shaped to heart-shaped leaves and pale blue flowers with darker blue spots and yellow streaks, arranged in groups of three to five.

Marianthus granulatus is a twining shrub or climber with silky-hairy, warty new shoots. Its adult leaves are egg-shaped to heart-shaped and often clustered, 20–45 mm (0.79–1.77 in) long and 8–18 mm (0.31–0.71 in) wide on a petiole up to 3 mm (0.12 in) long. The flowers are borne in groups of three to five on hairy peduncle 30–40 mm (1.2–1.6 in) long with bracts up to 4 mm (0.16 in) long. The sepals are linear, blue and silky-hairy, 4–5 mm (0.16–0.20 in) long. The five petals are pale blue with darkening blue markings, 4–7 mm (0.16–0.28 in) long with yellow streaks. Flowering mainly occurs from October to December and the fruit is a blue, egg-shaped capsule about 5 mm (0.20 in) in diameter.[2][3]

Taxonomy

This species was first formally described in 1855 by Nikolai Turczaninow who gave it the name Oncosporum granulatum in the Bulletin de la Société Impériale des Naturalistes de Moscou from specimens collected by James Drummond.[4][5] In 1863, George Bentham transferred the species to Marianthus as M. granulatus in his Fragmenta Phytographiae Australiae.[6] The specific epithet (granulatus) means "granular", referring to the seeds.[7]

Distribution and habitat

Conservation status

References

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