Gutiérrez De la Rosa A., Mammillaria longiflora (Britton et Rose) Berger (Cactaceae), Cactáceas y Suculentas Mexicanas, 2003, 48(1):30-31
The Mammillaria longiflora description includes an experiment in seed preparation and germination. The authors give a warm-water treatment, subsequent soaking and results in porous substrate, with limited documentation of the comparative sample.
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