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 |
|---|---|---|---|
| Frangula alnus | Mill. | 3,093 | documented |
| Frangula californica | (Eschsch.) A.Gray | 1,286 | documented |
| Frangula caroliniana | (Walter) A.Gray | 805 | documented |
| Frangula purshiana | (DC.) A.Gray ex J.G.Cooper | 592 | documented |
| Frangula obovata | (Kearney & Peebles) G.L.Nesom & Sawyer | 32 | documented |
| Frangula mucronata | (Schltdl.) Grubov | 25 | documented |
| Frangula rupestris | (Scop.) Schur | 24 | documented |
| Frangula capreifolia | (Schltdl.) Grubov | 10 | documented |
| Frangula goudotiana | (Triana) Grubov | 10 | documented |
| Frangula sphaerosperma | (Sw.) Kartesz & Gandhi | 8 | documented |
| Frangula betulifolia | (Greene) Grubov | 7 | documented |
| Frangula crenata | Miq. | 5 | documented |
| Frangula mcvaughii | (L.A.Johnst. & M.C.Johnst.) A.Pool | 5 | documented |
| Frangula discolor | (Donn.Sm.) Grubov | 2 | below the evidence gate |
| Frangula rubra | (Greene) Grubov | 1 | below the evidence gate |
| Frangula × blumeri | (Greene) Kartesz & Gandhi | 0 | below the evidence gate |
| Frangula acuminata | (Maguire & Steyerm.) A.Pool | 0 | below the evidence gate |
| Frangula austrosinensis | Hatus. | 0 | below the evidence gate |
| Frangula azorica | Grubov | 0 | below the evidence gate |
| Frangula breedlovei | (L.A.Johnst. & M.C.Johnst.) A.Pool | 0 | below the evidence gate |
| Frangula chimalapensis | (R.Fernández) A.Pool | 0 | below the evidence gate |
| Frangula chrysophylla | Reissek | 0 | below the evidence gate |
| Frangula circumscissa | A.Pool | 0 | below the evidence gate |
| Frangula darienensis | A.Pool | 0 | below the evidence gate |
| Frangula dianthes | (L.Riley) Grubov | 0 | below the evidence gate |
| Frangula glaberrima | (Peyr.) Grubov | 0 | below the evidence gate |
| Frangula grandiflora | A.Pool | 0 | below the evidence gate |
| Frangula grandifolia | (Fisch. & C.A.Mey.) Grubov | 0 | below the evidence gate |
| Frangula granulosa | (Ruiz & Pav.) Grubov | 0 | below the evidence gate |
| Frangula grisea | (Merr.) Grubov | 0 | below the evidence gate |
| Frangula henryi | (C.K.Schneid.) Grubov | 0 | below the evidence gate |
| Frangula hintonii | (M.C.Johnst. & L.A.Johnst.) A.Pool | 0 | below the evidence gate |
| Frangula inconspicua | A.Pool | 0 | below the evidence gate |
| Frangula lindeniana | (Triana) Grubov | 0 | below the evidence gate |
| Frangula longipedicellata | A.Pool | 0 | below the evidence gate |
| Frangula longipes | (Merr. & Chun) Grubov | 0 | below the evidence gate |
| Frangula longistyla | (C.B.Wolf) A.Pool | 0 | below the evidence gate |
| Frangula macrocarpa | (Standl.) Grubov | 0 | below the evidence gate |
| Frangula marahuacensis | (Steyerm. & Maguire) A.Pool | 0 | below the evidence gate |
| Frangula microphylla | (Willd. ex Roem. & Schult.) Grubov | 0 | below the evidence gate |
| Frangula neblinensis | (Maguire & Steyerm.) A.Pool | 0 | below the evidence gate |
| Frangula oreodendron | (L.O.Williams) A.Pool | 0 | below the evidence gate |
| Frangula palmeri | (S.Watson) Grubov | 0 | below the evidence gate |
| Frangula pedunculata | F.K.Mey. | 0 | below the evidence gate |
| Frangula pendula | A.Pool | 0 | below the evidence gate |
| Frangula pinetorum | (Standl.) Grubov | 0 | below the evidence gate |
| Frangula polymorpha | Reissek | 0 | below the evidence gate |
| Frangula pringlei | (Rose) Grubov | 0 | below the evidence gate |
| Frangula pubescens | (Ruiz & Pav.) Grubov | 0 | below the evidence gate |
| Frangula revoluta | Grubov | 0 | below the evidence gate |
| Frangula rhododendriphylla | (Y.L.Chen & P.K.Chou) H.Yu, H.G.Ye & N.H.Xia | 0 | below the evidence gate |
| Frangula riojae | (Perkins) Grubov | 0 | below the evidence gate |
| Frangula scopulorum | (M.E.Jones) A.Pool | 0 | below the evidence gate |
| Frangula surotatensis | (Gentry) A.Pool | 0 | below the evidence gate |
| Frangula ulei | (Pilg.) Grubov | 0 | below the evidence gate |
| Frangula wendtii | (Ishiki) A.Pool | 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.