Mammillaria rekoi
{{Short description|Species of cactus}}
{{Speciesbox
|image = Mammillaria rekoi ssp rekoi pm 1.JPG
|image_caption =
|status = LC
|status_system = IUCN3.1
|status2 = CITES_A2
|status2_system = CITES
|genus = Mammillaria
|species = rekoi
|authority = (Britton & Rose) Vaupel
|synonyms=
{{Species list
|Ebnerella rekoi|(Britton & Rose) Buxb.
|Mammillaria rekoiana|R.T.Craig, nom. superfl.
|Neomammillaria rekoi|Britton & Rose
}}
|subdivision_ranks = Subspecies
|subdivision = See text.
}}
Distribution and habitat
Mammillaria rekoi is found only in central and northern Oaxaca, Mexico. It grows in oak forests on basalt, limestone cliffs, and clay soils at altitudes of {{cvt|700-3000|m}} above sea level.
Description
Mammillaria rekoi has green stems that are either globe-shaped or somewhat cylindrical, growing up to {{cvt|15|cm|in|1}} tall with a diameter of {{cvt|5|–|6|cm|in|1}}. The stems may be solitary or form clumps. The 4–7 central spines of the areoles are {{cvt|10|–|15|mm|in|1}} long, hooked or straight, and much stouter than the 20–30 radial spines which are {{cvt|4|–|6|mm|in|2}} long. The flowers are purple-pink to pink with darker midveins and are up to {{cvt|15|mm|in|1}} long. The ripe fruits are red with brown seeds.
Taxonomy
The species was first described by Nathaniel Lord Britton and Joseph Nelson Rose in 1923 as Neomammillaria rekoi. Friedrich Vaupel transferred it to Mammillaria in 1925.
=Subspecies=
Three subspecies are recognized:
- Mammillaria rekoi subsp. aureispina (A.B.Lau) D.R.Hunt – 5–7 straight central spines and 20–23 golden yellow radial spines; usually solitary
- Mammillaria rekoi subsp. leptacantha (A.B.Lau) D.R.Hunt – 4–6 curved and hooked central spines and 27–30 radial spines; often in clumps of up to seven stems
- Mammillaria rekoi subsp. rekoi – 4 central spines, the lower one hooked, and about 20 white radial spines
References
{{Reflist|refs=
{{Citation |title=Mammillaria rekoi (Britton & Rose) Vaupel |work=The International Plant Names Index |url=http://www.ipni.org/ipni/idPlantNameSearch.do?id=1050122-2 |access-date=2024-11-30}}
{{Citation |title=Mammillaria rekoi (Britton & Rose) Vaupel |work=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |url=http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:151553-2 |access-date=2024-11-30}}
}}
{{Taxonbar|from1=Q1510353|from2=Q15041065}}
Category:Plants described in 1923
Category:Taxa named by Nathaniel Lord Britton