Abutilon striatum 'Thompsonii' - Ah fergot to water et!
Alocasia infermalis 'Kapit' - Ah fergot to water that, too!
Adantium pedantum - good riddance, ye misbegotten bastard of a fern!
Breynia nirvosa 'nana' - poor wee little bonsai.
Citrus x meyeri (Meyer lemon) seedlings
Citrus hystrix (Makrut lime) - It's DEED, DEED and a doornail.
Codiaeum 'Picasso's Paintbrush' - AHM STILL GLAD YER DEED, YE NEEP-HEIDED
Coprosma noid, possibly 'Evening Glow'
Juncus spiralis 'Variegata'
Mandevilla splendens - To hell with ye, ye great barmy vine.
Nematanthus wettsteinii 'Variegated'
Nephrolepis exaltata 'Emina'
Podocarpus 'Bird's Tongue'
Sansevieria rorida - Ah'll never ferget you. Ah'll play a doleful tune, on me pipes, o'er yer grave.
Sedum spp. cuttings - FECK YOU, APHIDS
Now, keep in mind that this group has been accumulating for several months. It's not as though one weekend I just went on a massive killing spree. And I did manage to re-home several other plants on craigslist before they contracted a fatal case of kitten, otherwise this list would be longer. But you have to admit, it's still a pretty impressive death toll. I'm that monster in the scary story that plants tell their plantlets, to keep them in line. Hopefully some experiential knowledge was gained from all this, hopefully these failures have taught me more about success.