Family: Droseraceae
Drosera
Citation:
L., Sp. Pl. 1:281 (1753).
Derivation: Greek droseros, dewy; alluding to the glistening of the glandular leaf laminae.
Synonymy: Not Applicable Common name: Sundews.
Description:
Leaves in a hemispherical rosette, flat basal rosette or cauline on a stem 2-60 cm long, sometimes with cauline leaves and a basal rosette; cauline leaves either linear and entire or divided, or peltate and orbicular or crescentic; rosetted leaves spathulate, flabellate, reniform or orbicular.
Sepals lanceolate, ovate or elliptic, 1.5-8 mm long, glabrous or pubescent, entire or lobed; petals obovate or elliptic-spathulate, 2-14 mm long, white, pink or orange.
Distribution:
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54 species recorded for Australia, 42 of these occur in south-western W.Aust.
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Biology:
No text
Key to Species:
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1. Leaf lamina linear, simple or divided; styles 3, bipartite or with a few branches |
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2. Leaf lamina entire, narrow-linear; stipules absent; stems often lax |
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D. indica 4. |
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2. Leaf lamina once or twice divided, segments linear; stipules membraneous; stem very short |
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D. binata 2. |
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1. Leaf lamina spathulate, flabellate, orbicular or crescentic; styles 3 or 4, with 2 to many branches |
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3. Leaves forming a hemispherical rosette; stipules present; scapes 1-4 |
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4. Leaf lamina spathulate; inflorescence many-flowered; flowers 5-merous |
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D. glanduligera 3. |
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4. Leaf lamina orbicular, peltate; inflorescence 1-flowered; flowers 4-merous |
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D. pygmaea 7. |
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3. Leaves all or mostly cauline or all in a flat rosette; stipules absent; scapes 1 to numerous |
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5. Leaves all in a rosette, leaf lamina spathulate; inflorescences 1-flowered |
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D. whittakeri 8. |
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5. Leaves cauline or cauline with a basal rosette, cauline leaves petiolate, crescentic or orbicular; inflorescences many-flowered |
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6. Leaf lamina deeply concave, orbicular; stem trailing or climbing |
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D. macrantha 5. |
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6. Leaf lamina crescentic; stem usually erect |
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7. Calyx glabrous; peduncles usually more than 3 cm long |
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D. auriculata 1. |
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7. Calyx pubescent; peduncles usually less than 4 cm long |
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D. peltata 6. |
Author:
Not yet available
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