10 favorite votes.  

Deep yellow Hybrid Tea.
Registration name: Iona Herdman

Bred by Samuel McGredy II (United Kingdom, 1914).
Introduced in Australia by H. Kemp in 1915 as 'Iona Herdman'.

Hybrid Tea.  

Deep yellow, orange shading, silver(y) shading.  Moderate fragrance.  Large, semi-double (9-16 petals), borne mostly solitary, in small clusters bloom form.  Blooms in flushes throughout the season.  

Arching, upright.  Small foliage.  

USDA zone 6b through 9b (default).  

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