Home | E-mail | Photo gallery | Mail Sale Catalogue | Grafting Guestbook |  Dictionary |  Winter test | Links | Search

  Ariocarpus retusus var. pectinatus CACTUS ART
NURSERY

Cultivation and Mail Sale
of Cacti and Succulents.


Ariocarpus retusus "pectinata"
 
 

Description: This plant differs from the standard Ariocarpus retusus, for its short pectinated spines already present in young specimens. The spines persist with the age, but in adult plant they are partially covered by fur.
Stem: Dull green , flattened, globose, rounded on top, 3-12cm high, 10-15cm in diameter.
Tubercles:
Leaflike divergent, erect, basally compressed, becoming attenuate at the apices, convex or nearly flattened adaxially, 1.5-3cm long, 1-3cm broad, usually nearly as broad as long (or sometime longer than broad)
Spines:
1,2 to 2,0 mm long, dull.
Areoles: At the tips  and extending on the upper side of the tubercles, elongated from 2,5 to 20,0 mm long, wooly.
Flowers: Diurnal 4-5cm in diameter., 2-4 2cm long; white to pink
Flowering time: October
Fruit: white, green, or rarely pinkish, 10-25mm long, 3-10mm in diameter

Cultivation: This species is slow growing but certainly not as slow as some other types of cacti, it is of easy culture in a well drained non-organic free draining soil compost, with ample water during the growing season.  Use of a weak low-nitrogen fertilizer during the growing season can encourage growth. The main threat to their development is root rot. Ariocarpus should be kept dry whenever there is a threat of cold. The appearance of Ariocarpus can benefit greatly by watering the plants from the bottom. This practice will help to keep the “wool” on the top of the plant from becoming matted or discoloured. Need light shade to full sun. Frost Tolerance: Hardy to -10° C


Propagation:
Ariocarpus retusus is probably the easiest species of the genus to raise from seed, but will generally take about 6-10 years to reach flowering size, this rare form is frequently grafted to speed the growth rate.

Family: Cactaceae (Cactus Family)

Scientific name: Ariocarpus retusus subsp. Pectinatus Weisbarth Subspec. nov. (nomina nuda)
Manfred Weisbarth a new subtype of Ariocarpus (Cactaceae), Nov. 2003, 11, 289-292.

Holotype: Mexico, San Louis potosi, To Huizache (?), A. Lau s.n. of 1971 cultivated specimen, Weisbarth (ULM 17099).

Conservation status: Listed in CITES Appendix I
 

Synonyms:
  • Ariocarpus retusus var pectinatus


This odd plant has long adiaxal areoles that stretch out to a greater or the full length of the tubercle and uncommon short pectinated spines .

Photo of conspecific taxa, varieties, forms and cultivars of Ariocarpus retusus.


Photo gallery: Alphabetical listing of Cactus and Succulent pictures published in this site.

Photo gallery Ariocarpus

 

 


 

 

A Special Thanks to all Those Who help us to make this web site
This plant description is based on research and personal experiences and is too short to provide a comprehensive coverage of the subject. Do you see an error in what is shown? Or do you know more about the species than we are showing? Your help is greatly appreciated. Why not send us an email with further information or photos so that we can correct or extend the information provided?

The photos in  this site are subject to copyright. Images may not be copied, downloaded, or used in any way without the expressed, written permission of CACTUS ART nursery and the original photographer.

Home | E-mail | Photo gallery | Mail Sale Catalogue | Grafting Guestbook | Dictionary |  Winter test | Links | Search