Philodendron and Syngonium are both genuses in the family Araceae. To put it very loosely, they're cousins. Botanical names will sometimes change as new relationships are discovered; common names don't change so much but they are frequently misleading or wrong. It's good to know both. Also in the Araceae: Aglaonema (CHINESE EVERGREEN) Dieffenbachia (DUMB CANE) Monstera (SPLIT-LEAF PHILODENDRON)* Caladium (ANGEL WINGS) Anthurium (FLAMINGO FLOWER) Zantedeschia (CALLA LILY)* Epipremnum (POTHOS) Symplocarpus (SKUNK CABBAGE) Alocasia (ELEPHANT EAR) *The common names are wrong here too. Monsteras are not Philodendrons, and Zantedeschia isn't even in the lily family. In some cases, the care requirements will overlap, and in some cases they won't, which just goes to show that you can't choose how to treat a plant based on what other members of its family like.

To me, number 1 looks more like a Caladium than a Syngonium, but I am not sure. Number 2 is Calathea ornata. Number 3 is an Aglaonema, maybe Aglaonema 'Cory.' I don't recognize number 4.

After experimenting with placement, this plant seems to be happiest and prettiest (the most colorful leaves) when it only gets the very first and last rays of the day, bright shade otherwise. Still blown away that this was clinging to life in the yard for so many years. I've never seen one this pretty for sale. My son likes to play with the dinosaurs in the pots while we wait for the bus.

There could be several reasons. One is the plants are likely tissue cultured and may have yet to outgrow all the chemicals used in the "stew" they were created in. Although the inflorescences look good they may still be malformed due to the process of tissue culture. Eventually they should out grow this. A possible solution is to buy tubers from another grower that has grown naturally in the ground. Caladiums are like Philodendron in they are unisexual and have imperfect flowers containing only one sex. The female flowers develop first but they are hidden inside the "globe" at the base of the inflorescence. On the first day the inflorescence opens the female flowers develop hidden inside this female floral chamber. These are fertile for only a single day. The next day the male flowers develop on the upper portion of the spadix and should produce pollen, which appears like a fluffy "fungus". In between the two, and still inside the female floral chamber can be found the sterile male flowers that produce the pheromones used to attract natural insect pollinators. The female flowers are receptive for a short period of time and the male flowers produce pollen for a limited period of time before the inflorescence collapses. If the female flowers are pollinated the female floral chamber will remain on the peduncle that supports the inflorescence and the berries and seeds will develop inside. In order to pollinate this species you must first collect the pollen once it appears and unless you have many inflorescences still developing and can use it right away put it into a sealed vial that also has desiccant in it to prevent the pollen from being destroyed by moisture. When you realize a new inflorescence is beginning to open mix the pollen with sterile water to create a thick mixture known as a slurry. Use an eyedropper to drip it into the female floral chamber. Before doing so place a piece of tape over the overlapping edges of the chamber to prevent it from dripping out too quickly. After about 15 minutes remove the tape and if you are lucky the female flowers may have been pollinated. My friend Julius Boos wrote a great article a few years ago explaining how both bisexual and unisexual inflorescences develop. You may want to read his article, which is illustrated before attempting to pollinate again. If there is simply no pollen being developed there is likely a reason that is causing this natural part of aroid reproduction to not occur. Without seeing the plants that may be difficult to determine but aroid pollination expert LariAnn Garner who often frequents this site may have a better answer. The link below is where you can read Julius article. Steve Here is a link that might be useful: Aroid pollination