So if they aren't open yet and the center looks to be more yellow than pink, are these considered the yellow Hoya nummularioides?

Thanks, Jeannie :)

Not necessarily. The buds could still be immature, so the inner parts of the flower may not have their color in. Also, you aren't taking into consideration that the majority of the corona is a pale white/yellow in both the yellow and pink varieties. The very center of the corona is an off-white to pale yellow in both varieties, then, there is a slight flush of pink, or yellow, depending on the variety, and the corona tips are pale yellow-to-white in both varieties.

Not just that, but it is very difficult to see inside a bud before it has bloomed, even with flowers that have dark red coronas and pale corollas.

Even if it is the yellow corona variety, it is still not considered rare. A couple of years back, maybe.

So I had another type (curly leaf one) bloom the other day and the blooms were white with pink center

and I had also purchased one labeled Hoya "Rubra" and I just took this picture....

So these blooms aren't open yet, but they show to be pink. I have another that is a variegated curly leaf one 9in my greenhouse) that bloomed (didn't get to take pictures) and it was also white with pink center. So I guess I will have to wait for the white to open to see what color it is. Thanks for the info!

Happy Gardening, Jeannie :)

Curly leaf? You mean Hoya compacta?

As far as your rubra buds being pink like that, that just means the undersides (and possibly the top sides, as well) of the corollas will be a pink shade.

Corollas can make it confusing to determine the corona color for another reason:

Take my photo of hellwigiana's buds above, in my first reply, for example. The corollas are orange. Obviously, when the buds opened, there is no orange to be seen.

Also, look at my Hoya fungii photos. The buds do show pink in the center, but if you look at the center of the corona in the open bloom, you will see that it is pale pink, almost white.

You will just have to wait and see. If it is yellow, then you will have a nice plant that compliments your pink variety. It is an uncommon variety, but by no means is it rare, and it is very easy to obtain, if you have sources.

I purchased the variegated curly one as Hoya Variegated Rope...it was the first time it bloomed, but I didn't get to take pictures...I was too busy loading my greenhouse when hurricane Harvey was heading our way:( I can post a picture of the plant tomorrow. I also had a few more but lost labels and two of them didn't make it. Others were Hoya Royal Flush, Chelsea, Bilobata and Tri color. I'm not sure which was which! Thanks again for all the info!

Happy Gardening, Jeannie :)

Nice haul. The "curly leafed rope" has a proper botanical name- Hoya compacta. It has also been called the Hindu rope Hoya.

Hoya 'Royal Flush' is a lacunosa variety, which will have dark green-red, small, slightly dimpled leaves with pale yellow to pale pinkish-yellow (depending upon light exposure) blooms.

Hoya 'Chelsea' is a carnosa cultivar, with the standard carnosa colored leaves, but instead of the leaves being smooth surfaced, they are dimpled. The flowers on 'Chelsea' will be a light pink.

Hoya 'Tricolor' (Trademark name) is also known as Hoya 'Krimson Queen'. It is another carnosa cultivar, having pink new growth and white leaf margins/edges (also called albomargination). The flowers can be white to pink, depending upon light intensity.

Hoya bilobata is a small leafed species. It has oblong, slightly pubescent (fuzzy), light green leaves. The flowers are reddish.

Here's a picture of the variegated curly leaf one.

I also have the green version that was named Hoya Rope when I purchased it.

It's tangled with my rosary vine, so I will try to get pictures of it later.

Happy Gardening, Jeannie :)