Almost positive it's leaf blight now, especially after looking at pictures and reading up a bit more. It's spread to two of the other leaves. I should have some fungal spray at home that I'll try out this weekend. I'm also planning on repotting it since I heard that fungal blights (oomycetes?) can get down into the soil and remain dormant there. I haven't noticed any sort of blight on my other plants (Potentially some on a zebra plant I got, but I'm more inclined to think that's stress from low humidity or poor watering conditions from the previous owner), so it doesn't seem to be spreading, and I'm also almost positive that the plant came with it. Soil's drying and I've ceased misting it because water apparently can spread spores. anyway, if worst comes to worst, can I just take the leaves off and try to get the tuber to send out new shoots? I've heard of alocasias going dormant for a few seasons and can be kept relatively dry and won't rot.

Alocasia x amazonica, perhaps. Here is a link that might be useful: Alocasia

I grow amazonica-type hybrids in pots as houseplants as well as in the yard and greenhouse. The ones I grow in the house are huge old plants, multi-trunked specimen plants. I have a loweii that is almost 10 years old. The others are Polly and Purple Prince. I water these all ONCE A WEEK. That's all. I totally saturate the soil ONCE A WEEK. They grow under a bank of skylights in what amounts to full sun for about 8 hours daily. Brown edges on yours could be either too much moisture at the root level, or humidity too low.

I just bought my Amazonica from Home Depot about a week and a half ago. It did not have a tag in it so had no idea what it was. I paid $9 for the plant in a three inch pot. It stands about one foot tall including the pot. I left it beside my kitchen sink this whole past week and a half. Fortuitous don't you think? It seems to be doing well. I don't know if I should leave it in the house or take it outside. I live in zone 8a in the Texas Hill Country. With global weather warming our temps have gone as high as 109 degrees, though usually around 98-103 degrees. The wind will last three or four days at 5-15 mph with 20 mph gusts. Between the wind and the heat some plants just melt. However, I have two types of elephant ear outside. One is regular macrorrhiza alocasia and the other is the so called "black" ones that are a dark greenish burgundy (invasive). Both do well here. Should I try this little plant outside? It would get about three or four hours of direct Sunlight per day and it would get plenty of moisture. If I keep it in the house, in what size pot should I transplant it? I would have to put it in my southeast facing window where it would get morning sun. Plants in that window dry out much too quickly. I could put it on my porch where it would be in bright indirect light. I could put the water crystals in the soil in which I transplant it to keep it from drying out so quickly. I don't want to kill it. It is a lovely little thing. How big will it eventually get? How much sun does it normally need? To me it looks like a shade plant. What are its original growing conditions. I guess from its name it must be from South America around the Amazon River? Thank you for your response. Here is a link that might be useful: forums/load/aroid/msg1119514328323html?1