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|familia=Cactaceae
|familia=Cactaceae
|genus=Thelocactus
|genus=Thelocactus
|features=flowers
|Temp Metric=°F
|Temp Metric=°F
|jumpin=If this plant info box on watering; zones; height; etc. is mostly empty you can click on the edit tab and fill in the blanks!
|jumpin=If this plant info box on watering; zones; height; etc. is mostly empty you can click on the edit tab and fill in the blanks!
|image=Upload.png
|image=Thelocactus rinconensis.jpg
|image_width=240
|image_width=240
|image_caption=Thelocactus rinconensis
}}
}}
'''Thelocactus''' is a [[succulent]] member of the [[cactus]] family. It originates from the arid lands of Central, and North [[Mexico]].
''Thelocactus'' is globe-shaped, short and cylindrical. It is a small cactus, although there are one or two species which, while only about 15 cm high, can be 25 cm in diameter; for example, ''T. nidulans''. Thelocactus species are generally solitary, but some varieties will cluster in groups.
The ribs on Thelocacti are very clearly marked and are sometimes twisted in a spiral. There can be from 8 to 20 ribs, are rather low and normally marked with raised, angular or hexagonal [[tubercles]]. These tubercles can sometimes be difficult to distinguish. [[Areole]]s sit in a furrow directly above where the spines grow and there can be up to twenty radial/radiating spines. They are often needle-like, spread out and can be from 1.3 – 1.5 cm long. The central spines are mostly coarser, number up to six, stand vertically out from the plant and can be 2.5 – 7.5 cm long. Colours of all of the spines vary and include white, gray, golden-yellow and red-brown.
Flowers grow from the new areoles at the very top of the plant. They are funnel-shaped, have a diameter of 2.5 – 7.5 cm and their colours vary from white to shades of yellow, red or purple. They are diurnal. Fruits are small, globe-shaped and plain. They are dehiscent through the large basal pore, green to brownish purple [to magenta], spherical to short cylindrical, 5 - 18 x 6 - 17 mm, not juicy, drying immediately after ripening, scaly, spineless, hairless and with floral remnant persistent.
==Cultivation==
==Cultivation==
''Thelocactus'' is generally easy to cultivate, even if many species fail to flower until they are five years old. [[Soil]]s should be composed of equal proportions of [[sand]] and [[humus]]. Water normally from Spring to Autumn. In Winter, keep most species at a minimum temperature of 8°C. They can survive at lower temperatures but the roots then must be kept dry. The dark brown or black [[seed]]s can be relatively large for the size of cactus and they germinate readily.
===Propagation===
===Propagation===
Reproduction is nearly always from seed, since the plant rarely produces plantlets. The seed should be put in a sand and compost mixture, kept moist, maintained at a temperature of 21°C and placed in a shady position.
===Pests and diseases===
===Pests and diseases===
==Varieties==
==Species==
*''[[Thelocactus argenteus]]''
*''[[Thelocactus bicolor]]''
*''[[Thelocactus conothelos]]''
*''[[Thelocactus hexaedrophorus]]''
*''[[Thelocactus leucacanthus]]''
*''[[Thelocactus macdowellii]]''
*''[[Thelocactus nidulans]]''
*''[[Thelocactus rinconensis]]''
*''[[Thelocactus setispinus]]''
*''[[Thelocactus tulensis]]''
==Gallery==
==Gallery==
<gallery perrow=5>
<gallery perrow=5>
File:Thelocactus leucacanthus, Huntington.jpg|''Thelocactus leucacanthus''
File:Thelocactus hexaedrophorus Lem.png|''Thelocactus hexaedrophorus''
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Image:Upload.png| photo 1
Image:Upload.png| photo 2
Image:Upload.png| photo 2