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little nipple cactus

Mammillaria heyderi

5,839 observations in the source records

Wildlife study photograph from iNaturalist.
(c) montserrat_navarro, some rights reserved (CC BY-NC)

25 photos

Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.

Photos you add are credited to you, and you keep the copyright.

What the records say

Easily confused with

Study checks a spoken answer against these, and tells you which one you named.

Where it is recorded

Records by month in Texas.January 223, February 213, March 242, April 460, May 282, June 137, July 123, August 127, September 151, October 161, November 209, December 203.
United States3,388
Texas2,531
Arizona610
Mexico243
New Mexico183
Nuevo Leon96
Oklahoma62
Coahuila de Zaragoza47
Chihuahua34
Tamaulipas34

Counts show where people looked, not only where it lives.

Traits

Group and habits

Edibility, toxicity and medicinal traits are records from datasets, not advice. Never eat, handle or use a wild species on the strength of an app.

Classification

KingdomPlants · Plantae
PhylumVascular Plants · Tracheophyta
ClassDicots · Magnoliopsida
Orderpinks, cactuses, and allies · Caryophyllales
Familycacti · Cactaceae
Genuspincushion cactuses · Mammillaria

Sources

Remember the name next time.

Practise little nipple cactus with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.