5 favorite votes.  

Yellow blend.

Bred by Max Krause (Germany, 1932).
Introduced in Australia by Hazlewood Bros. Pty. Ltd. in 1934 as 'Gotha'.

Pernetiana.  

Yellow, brown shading, light yellow undertones, ages to apricot .  Moderate fragrance.  Medium, semi-double (9-16 petals), borne mostly solitary bloom form.  Blooms in flushes throughout the season.  

Bushy, dense, upright.  Light green foliage.  

USDA zone 6b through 9b (default).