Cryptocoryne nurii

Furtado (1935)

Family: Araceae.

Synonyms: Cryptocoryne "serrulata." Etymology: Cryptocoryne: see C. affinis: nurii: after the plant collector Nur. Distribution: Malay Peninsula. Description: Petiole 3-10(-20) cm long. Leaf blade lanceolate to narrow ovoid, 5-18 cm long, 1.5-3 cm wide, dark green to red-brown marmorate, often with short red lines. •Apex acute; base round or slightly cordate. Margin more or less crispate.

Spathe about 5 cm long. Tube 1.5 cm, kettle 1 cm long. Limb about 2.5 cm long, wide cordate, recurved, short caudate, not twisted, interior featuring large irregular protuberances, dark purple-red. Throat very small. Collar swollen. Female flowers 5-7. Male flowers 25-30. Number of chromosomes 2n = 34. (The data figures on size are based on inflorescences of cultivated plants. Lengths of the tube and limb mentioned by de Wit (1990) probably refer to specimens from native habitats.)

Culture: The culture of this rare Cryptocoryne is exceptionally difficult in the aquar ium. This species probably requires the very soft, acid water from their native habitats. Maintaining the plant above water is not easy, but can, however, be satisfactorily achieved if the plants are cultivated in a substrate with an acid reaction (e.g., beech leaf mold). In well-growing specimens, the small but conspicuously decorative inflorescences can occasionally be made out.

Ecology: Cryptocoryne nurii populates shady and sunny places in fast-flowing streams and rivers which feature a gravelly-sandy substrate. Previous water analyses in natural locations show that the plants can be found in very acid waters with a pH-value around 5. Other: Even though Cryptocoryne nurii has occasionally been imported in the last couple of years, the species is rarely being cultivated, even by Cryptocoryne lovers, due to its problematic maintenance.

Spathe of Cryptocoryne nurii.

Opened kettle of C. nurii.

Spathe of Cryptocoryne nurii.

Opened kettle of C. nurii.

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