Kalanchoe thyrsiflora I believe. http://www.drought-smart-plants.com/pruning-9-month-old-kalanchoe-thyrsiflora.html
It looks like many plants I've seen that have no infestation but are sitting under a tree or shrub with a scale or aphid problem and have been...
Yucca schottii? One of the moisture tolerant Yuccas.
Cold damage no doubt.
Aloe
Vine appears to be Humulus.
Hippeastrum would be a bulb, this plant has storage organs on it's roots. I agree it's a Hemerocallis.
A Nightshade. http://www.eattheweeds.com/american-nightshade-a-much-maligned-edible/
Pilea peperomioides? http://de.wikipedia.org/wiki/Pilea_peperomioides
http://www.caes.uga.edu/publications/pubDetail.cfm?pk_id=7732 This site details the difference between cold damage and Petal Blight. HTH
This needs to be moved immediately to a shady outdoor location. It's not appropriate for indoors.
Thunbergia alata I believe.
Fendlera rupicola var. wrightii perhaps? http://www.fireflyforest.com/flowers/2813/fendlera-wrightii-wrights-fendlerbush/
Torilis species I believe. http://www.sbs.utexas.edu/bio406d/images/pics/api/torilis_arvensis.htm
Cercis (mexicana?) and Acer