I think that the title of the topic is the best way to address this.
I am a normal citizen scientist that has always been interested in medicinal plants and thanks to iNat is learning about insects and such, and many of my interactions with experts are about what difference a specific species have with similar species.
I have started looking on the Similar species tab when trying to refine IDs.
For example, how can I tell between Lonicera implexa or etrusca (two common honeysuckles on my area)? The difference is easy to spot once you know it: the flowers come out directly from the last leaves for one, and after a 'stick ’ (sorry I forgot the name) on the other. I have shared this information on comments with other fellow amateurs.
I have learned a lot about insects and birds from comments or answers to my questions from experts that helpfully answer my questions, but then it is hard to come back to this information, and they seem to have to repeat it so many times to newbies like me (feathers are too dark for …, see the number of spots that has on the wings, etc).
So, I think that it would be great if the Similar Species tab could add a small curator-controlled comment about the difference the nominal plant has to the other.
For example, in the Plantago media Similar species tab, you have Plantago lanceolata, Plantago major, other plantagos, Echium vulgare… https://www.inaturalist.org/taxa/59779-Plantago-media
It would be great if under Plantago major I can see: ‘obtuse leaves with less ribs’. Under lanceolata: ‘thinner and longer leaves’, Echium vulgare: ‘has little wart things’ (of course better written, but you get the idea).
Or maybe the coment could be:
- major: obtuse leave tip
- media: pointy leave tip
And then the same comment can be used in both directions, in the Similar species tab of media and lanceolata.
Other useful information will be ‘endemic to Australia’, ‘only found on marshy grasslands’. For example there is a kind of poppy around my area that looks like a USA poppy, and the USA poppy gets always suggested by the AI, while the local one, having less observations, never gets suggested. But a botanist that knows of our plants told me ‘no, you cannot find the USA poppy around here, it must be this other one. It grows alone in grasslands, not in a multitude like the Papaver rhoeas’.
This kind of information seems very easy to add and will help amateurs like me to learn more about taxonomy, and about taking better pictures of the organisms.
For example: I made an observation of a Mantis the other day (https://www.inaturalist.org/observations/97252569), and looking at some websites I learned that the black spot under the arm was a sign it was Mantis europea. Luckily one of the pics showed that spot!
The wikipedia entries are good many times, but they don’t always have specific information regarding how to tell it from other similar species.
So, my two cents for adding more information to the Similar species tab.
Sorry for long post, thanks for reading!