I have a plant that looks like yours, and dang if the name doesn't fall out the back of my brain every time I haven't used it for a few days. I only ever remember it is a fairly long word that starts with a "P", and has Mona something in it. OK, dug it up: Plectranthus possibly Plectranthus 'Mona Lavender'

it's a bit diffacult to give you an answer that will cover all your Orchids untill you tell us what all of them are. The one thing I can say that should help with all of them is more light. Light is so important to orchids. they can grow just fine with less than ideal light but they rarely bloom with out enough light. Also some Orchids require changes in day length, some it's temperature drops,and for most its's a matter of waiting for a new growth to mature as well. If you have low light Orchids you might be giving them enough with your exposure but for the medium to high light orchids you need to supplament the light they are getting with a man-made light source. I suggest getting some Compact Florescents and adding them to your growing area. If you will look back through older posts you will find many posts about light for Orchids. With out getting into too much repeat detail It is very diffacult to get enough light from a window unless you have perfect windows with no obstructions and you only grow low light plants. Look back through the posts and pay very close attention to posts and replies by a man named Howard. Howard is the Light GURU and what he says is worth reading.

That is totally acceptable, to note a synonym of a species on the name tag. Mostly listing of synonyms is done when referring to a species in a piece of botanical literature, a paper or article. In horticulture I would say it is more important to know the current name and then be familiar with the most commonly used synonyms. Many names that are now synonyms are very old and not in use anymore anyways. Take a look at the link I provided. This is an orchid page but it's just easier to use because all the really thorough Hoya sites are in other languages. Notice how the synonyms are listed, written in the proper way with the names of the person/people who originally published the plant under that name and the year of publication. Ideally the name of the publication the species was published in should also appear so that anyone interested can reference the original publication. This is all very important to understanding where the names came from and how we have arrived at the currently accepted name. Many times plants are described by more than one person/people under multiple names and this can be spread apart by years, decades, or longer. Many plants are initially lumped into Genera that they actually do not belong in and through the years as more research is done species get moved around and corrections made. The tuff part is that like you mentioned above there are often multiple names that are associated with one plant. Hoya stoneana and Hoya longifolia are two separate and unique species but there has been confusion between them. Their names are not synonymous and their association is a different kind of mistake altogether. The Hoya tsangii and Hoya odetteae reference is however a good example of a synonym (odetteae) and the currently accepted species name. On the topic of the name Hoya motoskei. I think too many people get caught up on leaf colour. Leaf colour has nothing to do with species identification and a dark leafed Hoya carnosa is simply that and not another species. Environmental factors are obviously strong factors but so are genetics. Plants grown from seed are individuals and just like I have brown hair and my sister has red hair, we can show a range of characteristics and still be the same species. Mike Here is a link that might be useful: Bulbophyllum auratum - Synonyms

Thanks everyone for your kind words. I've been growing plumeria since 2006. This is the second year that they have a few flowers. Last year, I had only Celadine bloomed. Two months ago, I almost threw this Confetti in the green trash. Thank God that I didn't have a chance. It came back nicely (feeling encouraged). :)