Apocynaceae and Caprifoliaceae
Apocynum androsaemifolium vs Lonicera tatarica
These two are not on this page because a keyword tool suggested them. They are here because our own identification model genuinely mistook one for the other, on real photographs, 3 times. We publish the rate, and then we tell you what actually separates them.
Confused 3x by our model Method published
Side by sidefigs. a and b
Apocynum androsaemifolium
spreading dogbane
Lonicera tatarica
Tatarian honeysuckle
How often our model gets it wrong measured, not estimated
| When the plant was | The model said | How often |
|---|---|---|
| Lonicera tatarica | Apocynum androsaemifolium | 3 of 19 (16%) |
Measured on 38,949 openly licensed, research-grade photographs. Full method and dataset.
What actually separates themon the record
| Family | Apocynaceae versus Caprifoliaceae. Different families, which is a real separation. |
|---|---|
| Genus | Apocynum versus Lonicera. |
| Flowering | Peaks in July versus May. If the plant is in flower, timing helps. (n = 3,192 and 638.) |
What we do not have yet: the diagnostic morphological character that a botanist would key on, from a source we can cite. We are not going to invent one. Until we have it, this page tells you the two are genuinely confusable, how often, and what the taxonomy and the flowering data do and do not settle.