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The Cycad Pages
Dioon merolae

Dioon merolae "De Luca, Sabato & Vásq. Torres", Brittonia 33(2): 180-184 (1981).
"TYPE: Mexico, Chiapas, Distrito de Tonala, Cerro de la Placa, about 4 km W of Tres Picos, 27 May 1979, M. Vazquez Torres 2301 (holo NAP, iso FI, MEXU, NY, XALUV)."[NY][NY][NY]


Distribution and habitat: Mexico - Chiapas

Conservation status: 1997 IUCN Red List of Threatened Plants category V.

Description:

Plants arborescent. Stem 3 m tall, 40 cm diam.

Leaves dark green, semiglossy, 80-100 cm long, flat (not keeled) in section (opposing leaflets inserted at 180° on rachis), with 200-240 leaflets; basal leaflets reducing to spines.

Leaflets narrowly lanceolate, not falcate, inserted at 50° to rachis, overlapping downwards; margins flat, dentate; median leaflets 7-9 cm long, 10-12 mm wide.

Pollen cones narrowly ovoid, pale brown, 30-40 cm long, 8-10 cm diam.

Seed cones ovoid, pale brown, 40-45 cm long, 20-25 cm diam.

Seeds ovoid, 30-40 mm long, 25-35 mm wide, sarcotesta cream or white.


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