Synonyms: Scaevola balansae Guill. APNI*
Scaevola biflora APNI*
Scaevola gracilis APNI*
Scaevola montana APNI*
Scaevola plumieri APNI*
Scaevola procera APNI*
Scaevola racemigera Däniker APNI*
Scaevola taitensis APNI*
Description: Perennial herbs or shrubs to 3 m high, variously hairy.
Leaves usually alternate, mostly with a tuft of axillary hairs in the axil; sessile or petiolate.
Flowers in thyrses, racemes or spikes; stalks articulate, with bracteoles. Sepals 5, shortly fused. Corolla white to various shades of blue or mauve with white or yellow throat, [rarely yellow], tubular, usually opened along the anterior slit like a fan; often hairy in throat with simple hairs and usually also with long multicellular trichomes which may be simple, capitate, papillate or hairy at apex; lobes usually equal, winged; not auriculate; anterior pouch absent. Stamens free from each other, epigynous. Ovary inferior, 2-locular except S. albida which is apparently 1-locular [1 species with 4] style simple; indusium ± horizontal usually with bristles on lips; ovules 1 or 2 [rarely 4].
Fruit indehiscent; mesocarp fleshy to almost dry; endocarp hard; seeds ovoid, not winged, caruncle absent.
Distribution and occurrence: World: c. 96 species, subtropical Southern Hemisphere & Caribbean. Australia: 71 species (70 species endemic), mainland States.
Text by R. C. Carolin
Taxa not yet included in identification key
| ||Key to the species|| |
|1||Flowers stalked below the bracteoles||2|
|Flowers sessile below bracteoles (i.e. bracteoles in axil of bract)||5|
|2||Cauline leaves mostly reduced to triangular scales up to 3 mm long; stems glabrous||Scaevola depauperata|
|Cauline leaves not reduced; stems hairy|
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|3||Shrubs with thorns, often with branched hairs||Scaevola spinescens|
|Herbs or shrubs without thorns, without branched hairs|
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|4||Bracteoles linear to oblanceolate, more than 10 mm long||Scaevola ramosissima|
|Bracteoles elliptic to oblong; less than 10 mm long|
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|5||Plants hairy, occasionally more or less glabrous||6|
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|6||Indusium with a tuft of prominent stiff often purplish hairs at the base which are longer than the bristles on the lips||7|
|Indusium with short stiff usually white hairs at base shorter than bristles on lips or with longer weaker hairs in same position|
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|7||Hairs on stem white; drier western areas and tablelands||Scaevola humilis|
|Hairs on stem yellowish; damper coastal districts|
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|8||Fruit fleshy, purplish white; hairs on leaves appressed; prostrate plant of coastal dunes||Scaevola calendulacea|
|Fruit dry, green; hairs on leaves not appressed; plants rarely on coastal dunes|
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|9||Corolla densely bearded inside; drier western areas||Scaevola parvibarbata|
|Corolla with only a few scattered hairs inside; eastern areas with higher rainfall|
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