It is somehow missing in the 2012 edition of ‘Plants of the Japanese Garden’ booklet at the beginning of Z area ((S to N)- just not there, even though it started to bloom boldly pink around April 10, 2013. We don’t know if this is a new plant, or was it just missed in the grand scheme.
Anyway, when I asked Hiroko about it, she emailed this:
We requested to add that Azalea to our new list of 2013 as follows:
Rhododendron hybrid 3′ 1 corolla pink along service road/under Lindera
north end of row of R. B44750
The long row of azalea (5 plants) south of the pink azalea which we are talking about is called Rhododendron B44750. The flower supposed to be magenta, but we have not seen the bloom this year. The azalea below (south of) the B44750 is Rhod. ‘Moonbeam’ which was about to open last week, and supposed to be pale white. We will confirm this Thursday. Right side of the ‘Moonbeam’ is Rhod. B44829 which has not bloomed this year yet, and supposed to be pale pink.
From New York Chapter of American Rhododendron Society: All azaleas are rhododendrons but not all rhododendrons are azaleas. Azaleas have been reclassified and are now in the genus Rhododendron. There are no clear cut lines for distinguishing all azaleas from all rhododendrons but here are a few characteristics to look for.
True rhododendrons have 10 or more stamens which is 2 per lobe. Azaleas usually have 5 stamens or 1 per lobe. Azaleas have 5 lobes in a flower.
Azaleas tend to have appressed hairs which is hair parallel to the surface of the leaf. This is particularly true along the midrib on the underside of the leaf. It is easily seen in “evergreen” azaleas. True rhododendrons instead of hair are often scaly or have small dots on the under side of the leaf. Azalea leaves are never dotted with scales and are frequently pubescent.
Many azaleas are deciduous. True rhodi’s are usually evergreen with the exceptions of R. mucronulatum and R. dauricum.
Azaleas have tubular funnel or funnel shaped flowers. Rhodi flowers tend to be bell-shaped. […]