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Neolloydia
conoidea (A. P. de
Candolle) Britton & Rose 1923
And this has not been thus always. Although it has stayed like genus from 1922, some Turbinicarpus were included in the Neolloydia genus during a time. Anderson, in 1986 argues that the Turbinicarpus is a neotenic form (infantile) of Neolloydia. Also he discusses the status like species of Neolloydia matehualensis, because it only grows in a restricted area of the habitat of Neolloydia conoidea and this last one is very variable.
The philogenetic studies of the mammillarias DNA, by Charles A. Butterworth and Robert S. Wallace (2004), locate to the Neolloydia conoidea very next to the Mammillaria schumannii and the Ortegocactus macdougallii.
Neolloydia conoidea grows in the north of Mexico, States of Coahuila, Nuevo Leon, Tamaulipas, San Luis Potosi, Hidalgo, Zacatecas and Queretaro, and in the United States, west of Texas. Neolloydia matehualensis can be found at south of Matehuala, in San Luis Potosi.
They are single or forming little groups of plants with a shape moderately columnar, 5 to 8 cm. of diameter. With ribs not noticeable or absent at all. Conical tubercles of 5 to 9 mm long. Dimorphic areolas with a furrow. 1 or 2 central spines, some absent, turgid, strong ones of black or brown red color. Between 10 and 25 radial spines of 5 to 7 mm in length, of white color with the black end. The flowers appear from the base of the alveolar furrow of young tubercles, in form of funnel, color violet throwing rose, of 2 to 3 cm. in length and from 4 to 6 of diameter, with pericarpelo naked. The fruits are round, green, of 4 to 5 mm of diameter. The seeds are black, in pear form.
Its culture is difficult and they need total sun, a substratum drained that dries easily, a good idea adding to this lime. In spite of our cares, there are times that the plants drie and die in a few days without previously showing visible indications. By Vicente Bueno, Insigne Dr. Good de Cactus Center Club |
