Unsurpassable
Classification:
1 Y-Y[ Trumpet Long-Cupped ]
Season:
Very Early
Height:
Tall - greater than 67.5 cm (26.6 in)
Hybridizer:

G. Lubbe and Son

G. Lubbe and Son
, the Netherlands
Registered:
Yes, before 1923
Chromosomes:
27 + 1B
Fertility:
Both Seed and Pollen fertile
Used as parent:
1 time as seed, 2 times as pollen
Comments

Fl. 108 mm wide; perianth segments broadly ovate, blunt, slightly mucronate, brilliant greenish yellow, inflexed, with margins strongly recurved, overlapping a quarter; corona cylindrical, smooth, vivid yellow, with mouth expanded and frilled, rim widely flanged, deeply notched and crenate.

Synonyms:

'Hortulanus Witte', 'Insurpassable'