Scaevola canescens

Scaevola canescens is a species of plant in the family Goodeniaceae. It is endemic to Western Australia where it occurs "from Shark Bay to Perth, in open forest and heath in sandy soil".[1]

Scaevola canescens
Scaevola canescens
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Goodeniaceae
Genus: Scaevola
Species:
S. canescens
Binomial name
Scaevola canescens
Occurrence data from AVH
Synonyms[3]

Dampiera canescens (Benth.) de Vriese
Lobelia canescens Kuntze

Description

Scaevola canescens (grey scaevola)[4] is a shrub growing up to 60 centimetres (24 in) high.[1] It has sessile, entire, oblong to oblanceolate leaves which are 12–85 millimetres (0.47–3.35 in) long and 4–15 millimetres (0.16–0.59 in) wide[1] and densely hairy.[4] It flowers from March to October[4] in axillary spikes up to 10 centimetres (3.9 in) long, the corolla is bearded, and white with brownish veins.[1] The fruit is usually one-seeded.[1]

Distribution

It grows in the IBRA regions: Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest, Swan Coastal Plain, and Yalgoo.

Etymology

The specific epithet is Latin:

canescens,-entis (part.B): canescent, “grayish-white. A term applied to hairy surfaces” (Lindley[5]); “hoary with gray pubescence” (Fernald 1950[6]); becoming gray, grayish; in mosses, hoary due to the collective hyaline hair points on the apices of leaves.[7]

Taxonomy

S. canescens was first described by George Bentham in 1837.[2] A holotype (W0047196) was collected by von Hügel at King Georges Sound, and is kept at Naturhistorisches Museum Wien Botanische Abteilung (W).[8] The earliest Australian record (MEL 1521288A) was collected by J.A.L. Preiss on April 15, 1839, somewhere in the vicinity of Perth.[9]

References
  1. Carolin, R.C. (1992). "Scaevola canescens". ABRS Flora of Australia. Data derived from Flora of Australia Volume 35. Retrieved 23 June 2018.
  2. Bentham, G. 1837. in Endlicher, S.F.L., Fenzl, E., Bentham, G. & Schott, H.W. Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad Fluvium Cygnorum et in Sinu Regis Georgii collegit Carolus liber baro de Hügel, p. 69
  3. Govaerts, R.; et al. "Scaevola canescens". Plants of the World online. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 23 June 2018.
  4. "Scaevola canescens". FloraBase. Western Australian Herbarium, Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions. Retrieved 23 June 2018.
  5. Lindley, J. 1849. ed. 6. The Elements of Botany, Structural, Physiological, & Medical: Being a 6th Ed. of the Outline of the First Principles of Botany, with a Sketch of the Artificial Methods of Classification, and a Glossary of Technical Terms.
  6. Fernald, M.L. (revised). 1950. Gray's Manual of Botany. Ed. 8. American Book Co., New York.
  7. Eckel, P.M. "A Grammatical Dictionary of Botanical Latin". Missouri Botanical Garden. Retrieved 24 June 2018.
  8. "JSTOR Global Plants: Holotype of Scaevola canescens Benth". Retrieved 25 June 2018. Cite journal requires |journal= (help)
  9. "Occurrence record: MEL 1521288A". AVH The Australasian Virtual Herbarium.


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