Every accepted species in the genus is listed. A name links to its page when we hold at least three commercially licensed photographs of it. Where we do not, the row shows how many we actually found, which is usually none.
| Species | Authority | Usable photographs | Page |
|---|---|---|---|
| Echinocereus stramineus | (Engelm.) F.Seitz | 1,629 | documented |
| Echinocereus coccineus | Engelm. | 313 | documented |
| Echinocereus santaritensis | W.Blum & Rutow | 216 | documented |
| Echinocereus brandegeei | (J.M.Coult.) K.Schum. | 129 | documented |
| Echinocereus nicholii | (L.D.Benson) B.D.Parfitt | 91 | documented |
| Echinocereus relictus | Wellard | 70 | documented |
| Echinocereus polyacanthus | Engelm. | 46 | documented |
| Echinocereus berlandieri | (Engelm.) Haage | 17 | documented |
| Echinocereus engelmannii | (Parry ex Engelm.) Lem. | 16 | documented |
| Echinocereus reichenbachii | (Terscheck ex Walp.) J.N.Haage | 15 | documented |
| Echinocereus salm-dyckianus | Scheer | 15 | documented |
| Echinocereus sciurus | (K.Brandegee) Dams | 12 | documented |
| Echinocereus yavapaiensis | M.A.Baker | 9 | documented |
| Echinocereus dasyacanthus | Engelm. | 8 | documented |
| Echinocereus fendleri | (Engelm.) Sencke ex J.N.Haage | 8 | documented |
| Echinocereus davisii | Houghton | 7 | documented |
| Echinocereus acanthosetus | (S.Arias & U.Guzmán) Gómez-Quintero & Dan.Sánchez | 6 | documented |
| Echinocereus longisetus | (Engelm.) Lem. | 6 | documented |
| Echinocereus rigidissimus | (Engelm.) Rose | 5 | documented |
| Echinocereus gurneyi | (L.D.Benson) W.Blum, Oldach & J.Oldach | 4 | documented |
| Echinocereus canus | D.Felix & H.Bauer | 3 | documented |
| Echinocereus papillosus | Linke ex Rümpler | 3 | documented |
| Echinocereus neocapillus | (D.Weniger) W.Blum & Mich.Lange | 3 | below the evidence gate |
| Echinocereus chaletii | W.Rischer | 2 | below the evidence gate |
| Echinocereus enneacanthus | Engelm. | 2 | below the evidence gate |
| Echinocereus huitcholensis | (F.A.C.Weber) M.Gürke | 2 | below the evidence gate |
| Echinocereus pectinatus | (Scheidw.) Engelm. | 2 | below the evidence gate |
| Echinocereus tamaulipensis | (Werderm.) Mich.Lange | 2 | below the evidence gate |
| Echinocereus triglochidiatus | Engelm. | 2 | below the evidence gate |
| Echinocereus chloranthus | (Engelm.) J.N.Haage | 1 | below the evidence gate |
| Echinocereus ferreiranus | H.E.Gates | 1 | below the evidence gate |
| Echinocereus primolanatus | Fritz Schwarz ex N.P.Taylor | 1 | below the evidence gate |
| Echinocereus pulchellus | (Mart.) K.Schum. | 1 | below the evidence gate |
| Echinocereus sanpedroensis | Raudonat & Rischer | 1 | below the evidence gate |
| Echinocereus × dahliaeflorus | Moellers | 0 | below the evidence gate |
| Echinocereus × kunzei | Gürke | 0 | below the evidence gate |
| Echinocereus × lloydii | Britton & Rose | 0 | below the evidence gate |
| Echinocereus × neomexicanus | Standl. | 0 | below the evidence gate |
| Echinocereus × roetteri | (Engelm.) Engelm. ex Rümpler | 0 | below the evidence gate |
| Echinocereus acifer | (Otto ex Salm-Dyck) Jacobi | 0 | below the evidence gate |
| Echinocereus adustus | Engelm. | 0 | below the evidence gate |
| Echinocereus arizonicus | Rose ex Orcutt | 0 | below the evidence gate |
| Echinocereus barthelowianus | Britton & Rose | 0 | below the evidence gate |
| Echinocereus blumii | D.Felix & H.Bauer | 0 | below the evidence gate |
| Echinocereus bonkerae | Thornber & Bonker | 0 | below the evidence gate |
| Echinocereus bristolii | W.T.Marshall | 0 | below the evidence gate |
| Echinocereus carmenensis | W.Blum, Mich.Lange & Scherer | 0 | below the evidence gate |
| Echinocereus chisoensis | W.T.Marshall | 0 | below the evidence gate |
| Echinocereus cinerascens | (DC.) Lem. | 0 | below the evidence gate |
| Echinocereus claviformis | (Regel & E.Klein bis) Haage | 0 | below the evidence gate |
| Echinocereus felixianus | H.Bauer | 0 | below the evidence gate |
| Echinocereus grandis | Britton & Rose | 0 | below the evidence gate |
| Echinocereus klapperi | W.Blum | 0 | below the evidence gate |
| Echinocereus knippelianus | Liebner | 0 | below the evidence gate |
| Echinocereus koehresianus | (G.Frank) W.Rischer | 0 | below the evidence gate |
| Echinocereus kroenleinii | (Mich.Lange) W.Blum & Waldeis | 0 | below the evidence gate |
| Echinocereus laui | G.Frank | 0 | below the evidence gate |
| Echinocereus ledingii | Peebles | 0 | below the evidence gate |
| Echinocereus leucanthus | N.P.Taylor | 0 | below the evidence gate |
| Echinocereus mapimiensis | E.F.Anderson, W.C.Hodgs. & P.Quirk | 0 | below the evidence gate |
| Echinocereus maritimus | (M.E.Jones) K.Schum. | 0 | below the evidence gate |
| Echinocereus metornii | G.Frank | 0 | below the evidence gate |
| Echinocereus milleri | W.Blum & al. | 0 | below the evidence gate |
| Echinocereus mombergerianus | G.Frank | 0 | below the evidence gate |
| Echinocereus nivosus | Glass & R.A.Foster | 0 | below the evidence gate |
| Echinocereus occidentalis | (N.P.Taylor) W.Rischer, S.Breckw. & Breckw. | 0 | below the evidence gate |
| Echinocereus ortegae | Rose | 0 | below the evidence gate |
| Echinocereus pacificus | (Engelm.) Britton & Rose | 0 | below the evidence gate |
| Echinocereus palmeri | Britton & Rose | 0 | below the evidence gate |
| Echinocereus pamanesii | A.B.Lau | 0 | below the evidence gate |
| Echinocereus parkeri | N.P.Taylor | 0 | below the evidence gate |
| Echinocereus pentalophus | (DC.) Engelm. ex J.N.Haage | 0 | below the evidence gate |
| Echinocereus poselgeri | Lem. | 0 | below the evidence gate |
| Echinocereus pseudopectinatus | (N.P.Taylor) N.P.Taylor | 0 | below the evidence gate |
| Echinocereus rayonesensis | N.P.Taylor | 0 | below the evidence gate |
| Echinocereus russanthus | D.Weniger | 0 | below the evidence gate |
| Echinocereus scheeri | (Salm-Dyck) Scheer | 0 | below the evidence gate |
| Echinocereus schereri | G.Frank | 0 | below the evidence gate |
| Echinocereus schmollii | (Weing.) N.P.Taylor | 0 | below the evidence gate |
| Echinocereus scopulorum | Britton & Rose | 0 | below the evidence gate |
| Echinocereus sharpii | (N.P.Taylor) Dan.Sánchez & Gómez-Quintero | 0 | below the evidence gate |
| Echinocereus spinigemmatus | A.B.Lau | 0 | below the evidence gate |
| Echinocereus stolonifer | W.T.Marshall | 0 | below the evidence gate |
| Echinocereus subinermis | Salm-Dyck ex Scheer | 0 | below the evidence gate |
| Echinocereus viereckii | Werderm. | 0 | below the evidence gate |
| Echinocereus viridiflorus | Engelm. | 0 | below the evidence gate |
| Echinocereus waldeisii | Haugg | 0 | below the evidence gate |
| Echinocereus websterianus | G.E.Linds. | 0 | below the evidence gate |
| Echinocereus weinbergii | Weing. | 0 | below the evidence gate |
This site is commercial, so it can only publish photographs licensed for commercial use. Roughly three quarters of the photographs on iNaturalist are CC BY-NC, which excludes them. A species needs at least three usable photographs before we will build it a page, because a page with one picture and no traits tells you nothing you could not get from a search result, and generating hundreds of thousands of those is precisely the practice that got the previous version of this site deleted.
So the species above without a link are not errors and they are not omissions. They are real, accepted plants that we cannot yet document to the standard we hold ourselves to, and the count in the photographs column is exactly how far short we fall.