Rhododendron 'Hotspur Red'
Azalea (Rhododendron 'Hotspur Yellow')
I think Hotspur Yellow is incorrectly listed as species austrinum
RHS says they are of the Hotspur Group from Knaphill and Exbury Azaleas.
https://www.rhs.org.uk/Plants/...
The following information comes from Missouri Botanical Gardens site:
'Hotspur' was introduced in 1934 by Lionel de Rothschild of Exbury Gardens, UK. It was bred using the Knap Hill hybrid, Rhododendron 'George Reynolds', as one of the parents. 'Hotspur' has openly funnel-shaped, frilly edged flowers that are about 4 in. wide and deep orange-red with a yellowish blotch. It is a medium sized azalea that grows 5 to 6 ft. tall and wide. There are several other cultivars in the Hotspur Group that are sold by color, such as 'Hotspur Red' and 'Hotspur Yellow'.
