Mammillaria klissingiana

I found this species growing very near the town of Guadalcazar, San Luis Potosi. Previously I had found this plant, albeit more elongated forms, near Jaumave in Tamaulipas.

This form is more round and compact resembling M. formosa in shape. M. brauniana has been referred under M. klissingiana and further study may link this species with M. formosa and even M. leucocentra which some authorities claim to be a subspecies of M. geminispina.

Whatever species it is called it is a joy to find and several hours of searching only produced a few plants mostly found near the shade of rocky outcrops or under bushes.

Other cacti found in the vicinity were Echinocereus cinerascens, and an Opuntia species.

All the M. klissingiana found had pink to reddish flowers but one species growing in the proximity of a pink flowering species had pale flowers as can be seen in these pictures.

Yellow flowered Mamms

This dainty cactus rewards the grower with showy and lemon-scented yellow flowers. Mammillaria surculosa is reported from the Mexican states of Tamaulipas and San Luis Potosi. In the wild it forms dense mats.

In cultivation it quickly clusters in a few years. The flowers are very individual for this genus with crocus-like petals.

This and the following plant were previously placed in the genus Dolichothele due to the large tubercles and relatively large flowers. Dolicothele has been relegated to Subgenus under Mammillaria.

Mammillaria baumii is another sweetly-scented yellow-flowered charming plant. In habitat it is often found in the shade mostly on bare rocks.

It comes from the Mexican State of Tamaulipas. I have seen this species near the town of San Vicente where it forms sizable low mats.

Ortegocactus macdougallii

This interesting cactus is only found in one small area, on Cero Cantaro, at San Jose Lechuguiri, Oaxaca.

The plant is named after Francesco Ortega who first brought the plant to the famous botanist Tom MacDougall and subsequently named by Alexander in 1961.

There has been attempts to refer this plant to the Genus Coryphantha but due to its isolation it must have evolved from an early ancestor which branched into Coryphantha and Ortegocactus. Philogenetic studies conducted in 2002 places this cactus between Coryphantha and the genus Neolloydia.

I have seen this plant half buried in scree in its habitat. The area is quite inaccessible. I have had to take several lifts which took me half a day to arrive. It grows on limestone rocks. Habitat cacti can develop the same red marking as their counterparts in cultivation.

The plant is small but will eventually clump. Plants in cultivation are usually grafted but I have grown these plants on their own roots without any problem.

Top picture shows a plant in cultivation.

Middle picture shows the habitat of Ortegocactus.

Bottom picture shows a clump of Ortegocactus macdougallii in habitat. The ruler is 15cm long (6inches)

Mammillaria painteri forma monstrosa

Mammillaria painteri fa. monstrosa is a well known form in cultivation. I have had Mammillaria bocasana cv. caterpincy. I suspect that both are the same cultivars.

Echinocereus davisii X E. pulchellus v. sharpii

This is a hybrid between Echinocereus davisii and Echinocereus pulchellus v. sharpii. Only this plant survived and it has been grafted on a pereskiopsis.

A few Mammillaria in flower

Mammillaria albata is considered a synonym of M. hahniana (M. bravoae) by some authorities and by others as a form of M. geminispina. Whatever it is, it is a very beautiful form. This form comes from Pedro Montoya (San Ciro) in the state of San Luis Potosi, Mexico.












Mammillaria petrophila is another beautiful cactus and rewards the grower with bright yellow flowers at this time of year. It hails from Southern Baja California, South of La paz, Mexico.






Mammillaria hernandezii is one of the smallest in the Genus Mammillaria and also displays some of the largest flowers for its size. From Sierra Mixteca, Oaxaca, Mexico.








Mammillaria laui v. subducta is one of three varieties of the same species found by Dr. Alfred Lau in the vicinity of La Reja, in the State of Tamaulipas, Mexico. The other two being M. laui v. laui and M. laui v. dasyacantha.