Verticordia comosa

Verticordia comosa is a flowering plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is an openly branched shrub with small, broad, almost round leaves and spikes of flowers that are pale yellow, sometimes with a white or pale pink centre.

Verticordia comosa

Priority One — Poorly Known Taxa (DEC)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Verticordia
Subgenus: Verticordia subg. Eperephes
Section: Verticordia sect. Pennuligera
Species:
V. comosa
Binomial name
Verticordia comosa

Description

Verticordia comosa is a shrub with a single stem at the base but openly branched, growing to a height of 0.9–2.5 m (3–8 ft) and a width of 0.5–2.0 m (2–7 ft). The leaves are broadly elliptic, egg-shaped or almost round, 2–4 mm (0.08–0.2 in) long and turned outwards from the stem.[2]

The flowers are unscented, arranged in spike-like groups on erect stalks 0.5–1.5 mm (0.02–0.06 in) long. The floral cup is top-shaped, 2.5 mm (0.1 in) long, glabrous and has 5 prominent ribs. The sepals are pale yellow, about 4.0 mm (0.16 in) long, with 8 or 10 lobes which have hairy fringes. The petals are pale yellow, white or pale pink, 3.5–4 mm (0.1–0.2 in) and with many pointed lobes, each about 1.0–1.5 mm (0.04–0.06 in) long. The style is 4.5–5.5 mm (0.2–0.2 in) long, curved or bent and has a tuft of hairs. Flowering time is from October to January.[2]

This species, like other verticordias, often grows with other members of the genus and sometimes hybridises with them, including with the critically endangered Verticordia spicata subsp. squamosa.[3]

Taxonomy and naming

Verticordia comosa was first formally described by Alex George in 1991 and the description was published in Nuytsia from specimens collected near Three Springs in 1980.[1][4] The specific epithet (comosa) is a Latin word meaning "downy" or "having hairs"[5] referring to the tuft of hairs on the style.[2]

George placed this species in subgenus Eperephes, section Pennuligera along with V. chrysostachys, V. lepidophylla, V. aereiflora, V. dichroma, V. x eurardyensis, V. muelleriana, V. argentea, V. albida, V. fragrans, V. venusta, V. forrestii, V. serotina, V. oculata, V. etheliana and V. grandis.[4]

Distribution and habitat

This verticordia grows in deep sand and loam over gravel, usually with other verticordias in open shrubland. It occurs between Three Springs, Mingenew and Morawa in the Avon Wheatbelt and Geraldton Sandplains biogeographic regions.[6][7]

Conservation

Verticordia comosa is classified as "Priority One" by the Western Australian Government Department of Parks and Wildlife[6] meaning that it is known from only one or a few locations which are potentially at risk.[8]>

Use in horticulture

Verticordia comosa has proven difficult to propagate and even harder to maintain in the garden. Because of its rarity and its horticultural potential, attempts to grow the plant continue.[2]

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References
  1. "Verticordia comosa". APNI. Retrieved 29 May 2016.
  2. Elizabeth A. (Berndt) George; Margaret Pieroni (illustrator) (2002). Verticordia: the turner of hearts (1st ed.). Crawley, Western Australia: University of Western Australia Press. pp. 362–363. ISBN 1-876268-46-8.
  3. Stack, Gillian; Chant, Alanna; Broun, Gina; English, Val. "Scaly-leaved featherflower (Verticordia spicata subsp. squamosa) Interim Recovery Plan" (PDF). Government of Western Australia Department of Conservation and Land Management. Retrieved 29 May 2016.
  4. George, Alex (1991). "New taxa, combinations and typifications in Verticordia (Myrtaceae : Chamelaucieae)". Nuytsia. 7 (3): 231–394.
  5. Moore (ed.), Bruce (2002). The Australian Oxford Dictionary (1999 ed.). South Melbourne, Vic.: Oxford University Press. p. 272. ISBN 0195507932.CS1 maint: extra text: authors list (link)
  6. "Verticordia comosa". FloraBase. Western Australian Government Department of Parks and Wildlife.
  7. Paczkowska, Grazyna; Chapman, Alex R. (2000). The Western Australian flora : a descriptive catalogue. Perth: Wildflower Society of Western Australia. p. 406. ISBN 0646402439.
  8. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 29 May 2016.
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