Plants › Quassia Family
Stewart's Crucifixionthorn
Castela stewartii
24 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.
Easily confused with
crown of thornsKoeberlinia spinosaStudy checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| Mexico | 70 |
|---|---|
| Chihuahua | 68 |
| United States | 65 |
| Texas | 65 |
| San Luis Potosi | 1 |
| Zacatecas | 1 |
Counts show where people looked, not only where it lives.
Classification
| Kingdom | Plants · Plantae |
|---|---|
| Phylum | Vascular Plants · Tracheophyta |
| Class | Dicots · Magnoliopsida |
| Order | Soapberries, Cashews, Mahoganies, and Allies · Sapindales |
| Family | Quassia Family · Simaroubaceae |
| Genus | Castela |
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- How much to rely on each source
Remember the name next time.
Practise Stewart's Crucifixionthorn with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.