This group of Drosera includes the smallest sundews found anywhere in the world, 0.4 in. (1 cm) in diameter with leaves one half this dimension and is characterized by gemmae formation during the fall and/or winter. Gemmae are small, greenish structures formed in the crown area of the rosette of leaves. Gemma is species specific. For example, D. paleacea has spherically-shaped gemmae, while D. pulchella has flat, discshaped gemmae. (Photo 4-1) Gemmae size varies from 0.04 to 0.2 in. (1-5 mm). (Fig. 4-4) The gemmae, also called brood bodies, develop into plants under appropriate environmental conditions.
The plants tend to form rosettes. The leaves, which have concave leaf blades, vary in shape from almost round to oval to linear. A characteristic feature in this group of Drosera is the growth of translucent stipules from the base of the petioles. Stipules are present in other Drosera plants but in this group they are showy and quite large in comparison to the leaf blades. Some species can be identified by the cone-shaped structure that the stipules form when the plant is dormant. Many species tend to flower profusely. Flower color varies considerably, including all colors except green and blue. The smallest flowers are the order of 0.08 in. (2 mm) long.
Pygmy Drosera grow during the Australian winter which is the wet season and usually go dormant during the hot, dry summer. Plants survive the dry season by forming a bud in the crown area of the plant which is held in place by roots that extend through the parched soil surface into damp subsoil beneath.
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