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''Scaevola argentea'', is a low growing, branching shrub in the family Goodeniaceae.


Description

''Scaevola argentea'', is a prostrate, branching shrub which grows to a height of to 15 cm. It is silvery and hairy. The leaves are
sessile Sessility, or sessile, may refer to: * Sessility (motility), organisms which are not able to move about * Sessility (botany), flowers or leaves that grow directly from the stem or peduncle of a plant * Sessility (medicine), tumors and polyps that ...
, elliptic to obovate, sometimes dentate, sometimes
entire Entire may refer to: * Entire function, a function that is holomorphic on the whole complex plane * Entire (animal), an indication that an animal is not neutered * Entire (botany) This glossary of botanical terms is a list of definitions of ...
. The leaf blade is about 8–20 mm long and 3–13 mm wide. The flowers occur in dense spikes or spike-like
thyrses A thyrse is a type of inflorescence in which the main axis grows indeterminately, and the subaxes (branches) have determinate growth.{{cite book , author1=Hickey, M., author2=King, C. , year=2001 , title=The Cambridge Illustrated Glossary of Bot ...
and have elliptical bracts which are 5–10 mm long and entire. The bracteoles are 3–4 mm long and narrowly elliptic. The sepals are free. The corolla is 8–13 mm long, and has silvery hairs on the outside, is bearded inside, and is mauve to blue. The ovary is 2- locular. The
indusium A sorus (pl. sori) is a cluster of sporangia (structures producing and containing spores) in ferns and fungi. A coenosorus (plural coenosori) is a compound sorus composed of multiple, fused sori. Etymology This New Latin word is from Ancient ...
(cup enclosing the stigma) is 1 mm long and has a stiff purplish beard with and without bristles on the lips. The fruit is about 2 mm long, ellipsoidal, sometimes ribbed, otherwise smooth, sometimes
pubescent The adjective pubescent may describe: * people or animals undergoing puberty * plants that are hairy, covered in trichomes * insects that are covered in setae In biology, setae (singular seta ; from the Latin word for "bristle") are any of a ...
. It has no synonyms.


Distribution & habitat

''Scaevola argentea'' is endemic to
Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...
and found between
Ravensthorpe Ravensthorpe may refer to any of the following places. England *Ravensthorpe, Dewsbury in West Yorkshire **Ravensthorpe railway station, Dewsbury *Ravensthorpe, Northamptonshire *Ravensthorpe, Peterborough in Cambridgeshire *Ravensthorpe, an histor ...
and Ongerup. It grows in sandy heaths.


Etymology

The specific epithet, ''argentea'', is derived from the Latin, ''argenteus,-a,-um'' , which means ''silver'', ''silvery'', ''silvery-white''.


References


External links


''Scaevola argentea'': Occurrence data from the Australasian Virtual Herbarium
{{Taxonbar, from=Q17480657 argentea Eudicots of Western Australia Asterales of Australia Plants described in 1992 Taxa named by Roger Charles Carolin