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Tumamoca mucronata

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Photo by Robert Maijer.

The leaf by Robert Maijer.

Caudexes by Robert Maijer.

The male flower by Robert Maijer.

The seeds on a millimetre ruler by Robert Maijer.

Author: Denis M. Kearns, 1994
Origin:  Aizona; USA, North-Eastern Mexico
Soil:  Mix
Water:  Medium
Sun:  Maximum
Thickness:  5 Centimetres
Height:  50 Centimetres
Flower:  Pale Green
Propagate:  Seeds
Names:  -
Synonyms:  Might be: Ibervillea macdougalii, Lira, Dávila & Legaspi.
Tumamoca macdougalii, Rose ?

This member of the Cucurbitaceae family was given this name by Denis M. Kearns in 1994. It is found in Mexico, growing in a well drained soil with some water and lots of sun. The caudex can grow to five centimetres in diameter, the vines can reach half a meter and the flowers are pale green.

The genera is named for Tumamoc Hill just west of the City of Tucson, Arizona, where the University of Arizona maintains an ecological research station. The species name means 'with a short tip'.

Additionally, Robert Maijer can tell that it is a night flowering species, with a strong and pleasant scent at dawn. Every inflorescence bear one female flower followed by several male flowers. When the female flower is pollinated, the male buds abort. It gets a green, marbled fruit, 2-3 cm across is formed very quickly, it will be full-grown in 4-6 weeks and contain 5-10 big seeds (not flat but a bit like fat grape seeds) The fruit falls off when it is still green, the only sign that it is ripe is the green turning from bright to dull green.

The female flower by Robert Maijer.

The fruit by Robert Maijer.