Mammillaria laui

{{Short description|Species of plant in the genus Mammillaria}}

{{Speciesbox

|image=Mammillaria laui ssp subducta.jpg

|image_caption=In bloom

|image2=Mammillaria laui subsp. dasyacantha.jpg

|image2_caption=Individuals tend to form clumps over time

|status=CR

|status_system=IUCN3.1

|status_ref={{cite iucn |author=Fitz Maurice, B, Fitz Maurice, W.A. |author2=Hernández, H.M. |author3=Sotomayor, M. |author4=Smith, M. |year=2013 |title=Mammillaria laui |volume=2013 |page=e.T152864A687987 |doi=10.2305/IUCN.UK.2013-1.RLTS.T152864A687987.en |access-date=11 May 2021 }}

|genus=Mammillaria

|species=laui

|authority=D.R.Hunt

|synonyms_ref=

|synonyms={{Collapsible list|

• Escobariopsis laui (D.R.Hunt) Doweld
• Escobariopsis laui subsp. dasyacantha (D.R.Hunt) Doweld
• Escobariopsis laui subsp. subducta (D.R.Hunt) Doweld
• Mammillaria laui subsp. dasyacantha (D.R.Hunt) D.R.Hunt
• Mammillaria laui subsp. subducta (D.R.Hunt) D.R.Hunt
• Mammillaria subducta (D.R.Hunt) Repp.
• Mammillaria subducta var. dasyacantha (D.R.Hunt) Repp.

}}}}

Mammillaria laui is a species of cactus in the genus Mammillaria, native to Tamaulipas state in Mexico.{{cite web |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:314766-2 |title=Mammillaria laui D.R.Hunt |author= |website=Plants of the World Online |publisher=Board of Trustees of the Royal Botanic Gardens, Kew |access-date=11 May 2021 }} A number of subspecies were described, occurring along an elevation gradient; these are no longer accepted. It is listed as Critically Endangered (CR) in the wild. As Mammillaria lauii it has gained the Royal Horticultural Society's Award of Garden Merit.{{cite web |title=Mammillaria lauii |url=https://www.rhs.org.uk/plants/327529/mammillaria-lauii/details |date=2021 |publisher=The Royal Horticultural Society |access-date=11 May 2021 }}