Amarylla tomatilloOffsite articles:
• Dave's GardenVendors:
(Spelled Amarilla here, and so may be another variety.)
• Annapolis Seeds
• Baker Creek Heirloom Seeds
• Oro Seeds
• packetseeds.comOffsite forum search results:
• Google: Dave's Garden
• Google: Gardenweb
• Google: proboards.com
• Google: Tomatoville
This is a yellow tomatillo, which for me had unusual flavor when I grew it in 2015. It reminded me of sour watermelon, but weirder. The husked fruits kept for an extremely long time when refrigerated (and even ripened further, and probably sweetened further, during this process). Usually people keep tomatillos in the husks, unrefrigerated, for storage.
I got my seeds from Baker Creek Heirloom Seeds: https://www.rareseeds.com/store/vegetables/tomatillo/amarylla-tomatillo
It's a polish heirloom with early maturity and heat-tolerance. The fruits can get a decent size. Perhaps not the most drought-tolerant in the heat, however.