Apiaceae and Viburnaceae

Angelica atropurpurea vs Sambucus nigra

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

Angelica atropurpurea, photographed by jyoung2399
fig. a jyoung2399, CC BY 4.0

Angelica atropurpurea

purple-stemmed angelica
Sambucus nigra, photographed by Zeke Marshall
fig. b Zeke Marshall, CC BY 4.0

Sambucus nigra

European black elderberry

How often our model gets it wrong measured, not estimated

When the plant was The model said How often
Angelica atropurpurea Sambucus nigra 3 of 20 (15%)

The confusion runs one way only. The model mistakes Angelica atropurpurea for Sambucus nigra, but not the reverse.

Measured on 38,949 openly licensed, research-grade photographs. Full method and dataset.

What actually separates themon the record

Family Apiaceae versus Viburnaceae. Different families, which is a real separation.
Genus Angelica versus Sambucus.
Flowering Peaks in June versus June. Timing does not separate them. (n = 163 and 2,155.)

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.

Both recordsfull pages