Possibly a variegated Euonymus japonicus. Here is a link that might be useful: images of variegated Euonymus

Thanks for the answers. That's true, the spines of diguetii are yellow. I got the name from this website, the spines of these diguetii are more pink to red. http://www.cactus-art.biz/schede/FEROCACTUS/Ferocactus_hybrid/Ferocactus_diguetii_hybrid_variegated/Ferocactus_diguetii_hybrid_variegata.htm I think I just take your suggestion. This post was edited by hankeat on Sat, Jan 5, 13 at 15:56

I have some measurements for this hosta that I hope will help with ID. Also, the variegation seems to be getting stronger on the oldest leaves compared to last week's photo. 24 inches tall, 40 inch span, leaves are 7 inches wide and 9 inches long Any more suggestions for what this hosta could be?

aaypua It looks to me to be a fungal disease - maybe powdery mildew or anthracnose. High humidity, poor drainage and overwatering are all 'helping' the fungus diseases. Poor drainage as in potting mix , and also a container without drainage hole, or a glazed container that takes longer to dry up. The little of the soil visible in your photos seems to be dark - maybe you keep it too wet? If my plant, I would discard all visibly diseased leaves and stems, repot into well draining mix into non-glazed container with drainage holes, use a fungicide and make sure potting mix almost dries up before watering again. I use top-dressing of gravel or pebbles on all my plants, but maybe you should keep it off (at least for a while) until you see improvement - some ppl suggest that it will keep in too much humidity. I do not have that experience, but perhaps in hotter, wetter or more humid climate it is a fact. I also use potting mix without any soil and that could (?) make a difference. Make sure there is good air circulation around the plant, if indoors - maybe set up a small fan.