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15. Macarenia P. Royen

Macarenia P. Royen, Med. Bot. Mus. Herb. Rijksuniv. Utrecht 107: 137 (1951), rev.

Roots unknown; stems absent or indistinct and represented by amorphous, somewhat corm-like base or holdfast, merging into leaves, ± 7 mm wide. Leaves more or less in a basal rosette, up to 30 cm long; petiole terete, up to 10 cm long, provided at base with an up to 3 mm long, obtuse stipule; blades repeatedly forked, ultimate segments linear up to 15 mm long, each with a distinct nerve. Spathellas each containing 10--20 flowers, club-shaped, up to 12 cm long, solitary or 2 or 3 together, enveloped at base by 2 membranous bracts, individual flowers without a spathella occasionally found. Flowers 10--20, erect in a single spathella; peduncles terete, slightly winged, up to 3 cm long; tepals 2--5, lanceolate, ± 0.8 mm long; stamens 2--4, up to 4 mm long; anthers dehiscing introrsely. Capsules ellipsoidal to obovoid, up to 4 mm long; valves equal, each with 3 ribs; stigmas simple. One sp., M. clavigera P. Royen, Macarena Mountains, Colombia.







Subfam. Podostemoideae

Macarenia clavigera. C Spathella in longitudinal section (2 mm). D Flower (1 mm). E Flowering plant (1 mm).

Cook & Rutishauser 2007

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