Since Darrell grows many distinct forms, he's started giving each type a number to make listing them easier. He doesn't think giving individual names a good idea because "there are probably thousands of other similar clones in the wild populations where they originate".
E. grandiflorum spp. koreanum #1 produces side leaflets with at least one of the basal lobes squared with an extended point....quite neat. Darrell says that when well grown, there can be as may as three points on some, producing several different looking leaflets on the same plant.
Leaves are medium large and bronzed in spring - you can see the remaining edging to each leaf in this photograph.
Large, pale yellow flowers are produced below the leaves on twelve inch stems (30.48 cm).
Epimedium pinnatum spp. colchicum
Native to what was the USSR province of Georgia, along the east coast of the Black Sea, these are evergreen plants who, once established, are very drought tolerant. Spreading six to eight inches a year (15 - 20 cm), they form a dense ground cover about eight to ten inches tall (20 - 25 cm).
E. pinnatum spp. colchicum 'Thunderbolt' is another 2000 Cobblewood® introduction.
Originally collected by Skip March of the US National Arboretum in 1973, this special clone was named in cooperation with the Arboretum in 2000.
When temperatures start to cool in the fall, the medium-sized leaflets turn from solid green to glossy black-purple with 'thunderbolt' patterned green veins.
Flowers are produced on leafless stems; small, bright yellow petals form a yellow cup with short reddish spurs held straight out against the inner sepals.
Epimedium sagittatum (Cc. 890004) has the typical form of the species with especially large, arrow head-shaped, evergreen leaflets that can reach nine inches (22 cm) in length when well grown in fertile soil and shade.
Flowers are tiny, with white inner sepals and gold spurs, produced in panicals of fifty or more on stems that become eighteen inches tall (45 cm) at Cobblewood, although Darrell says he has seen them over two feet tall (0.6 m) in the Pacific Northwest.
