‘Select Yellow’ 
‘Semiplena’ 
‘Sempervirens’ 
‘Sensation’ 
66 
(Select Nurseries, Brea, California. Catalog, p. 28. 1961, without de— 
scription). D.R. Egolf and R.F. Drechsler. Baileya 15(2):87. 1967 : 
Chromosome number 2n=34. 
= ‘Lynnii’, ‘Golden Delicious’ 
(W.J. Bean, Trees and Shrubs Hardy in the British Isles, 7th ed., vol. 2, 
p. 590. 1951, as P. rogersiana ‘Semiplena’) : Flowers with numerous 
petals in two or more rows instead of the normal five in one row. F.J. 
Chittenden, ed. Royal Horticultural Society Dictionary of Gardening, 2d 
ed., vol. 4, p. 1720. 1956, as P. rogersiana var. semiplena : Flowers with 10 
or more petals. 
= ? ‘Flore Plena’ 
P. rogersiana 
(P.J. Looymans & Zonen, Oudenbosch, Holland. Catalog, p. 54. October 
1860, as Cratoegus pyracantha ‘Sempervirens’, without description). 
(Bobbink & Atkins, Rutherford, New Jersey. Catalog, back cover. 1955) : 
Less thorny than other varieties; leaves semi-evergreen; fruit coral scarlet, 
maturing to brilliant red; very hardy. F. deVos. Proceedings, Plant Propa- 
gators Society, p. 36. 1958, as P. koidzumii ‘Sensation’ : Compact 
growth habit; fruit scarlet red, abundant; zone 5; coccinea hybrid. F. 
deVos. The Garden Journal 10(6):217. 1960, as P. coccinea lalandii ‘Sen- 
sation’. U.S. plant patent no. 1322, November 16, 1954 : Originated as 
a hybrid of P. coccinea x P. coccinea ‘Lalandei’ made by O.H. Varden, 
East Rutherford, New Jersey; habit of growth primarily upright, some 
tendency to spread; branches irregular, thorny; fruit globular pome, 3/8 
inch in diameter; highly disease resistant. 
= ‘Coral’ 
P. coccinea 
Orange Red 34A, RHS 
