
Drosera callistos

Range: southwestern Australia, near Gidgegannup and Brookton
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This pygmy sundew has a restricted range east-southeast of Perth, found in laterite laced or pure sandy soils. Plants reach 2.3 cm in diameter, with flat rosettes of paddle-shaped leaves sometimes atop very short stems. Petioles are slender and even width along their length up to a narrowing behind the lamina, with a scattering of tiny white glands across their surfaces. Lamina are orbicular to broadly elliptic, with very lengthy marginal tentacles at their tips. Color is generally green with pinkish to reddish tentacles, though the lamina may also become red-flushed. Inflorescences may reach up to 7 cm in height, with a sparse covering of white hairs at the base growing denser among the up to 12 blooms. Flowers are up to 2.2 cm in diameter, with broad to slender obovate petals colored bright metallic orange to peach and red-edged black at the base, sometimes extending slightly up the midrib. Plants often experience very dry summer conditions, going dormant in a dense shaggy stipular bud. This species can be distinguished from its relatives by overall larger proportions, greater trichome and gland densities, and clavate (club-shaped) stigmas in most populations.
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Cultivation: grow in a 3:1 sand/peat or laterite-laced soil if available, kept just moist and moderately humid with temperatures of 45-70°F during the growing season. In summer, increase photoperiod and temperature but avoid drying out, as dormant plants can be difficult to reawaken. Seeds may require hot stratification or GA3 treatment to germinate; sow on soil surface, and grow in strong artificial light to full sun.
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Lifespan and reproduction; perennial. Reproduces through gemmae and, rarely, seed. May possibly be grown through leaf cuttings.
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Sources: Lowrie et al. (2017). Drosera of the World Vol. 2. Redfern Natural History Publications.