You where going to contact me end of this week (morphle at ziggo dot nl) for the plant/species identification software:
https://news.ycombinator.com/item?id=31537487.
Your collaborative photogrammetry can be combined with the open and free species identification API and my custom OpenStreetMap data extensions and KartaView/OpenStreetCam/OpenStreetView to get more photogrammetry location integration and more free crowdsourced open data to add to photogrammetry. A demo of Seadragon/Photosynth [1] inspired me to work on this.
[1] https://www.ted.com/talks/blaise_aguera_y_arcas_how_photosyn...