Heuchera cylindrica Dougl.

Leaves at the base to about 6 cm long and wide, more or less round and with deep lobes and scalloped margins. Flower clusters narrow, spike-like, to about 15 cm long, on stalks to nearly 1 m tall. Flowers 5-7 mm long. Sepals cream, sometimes suffused with green. Petals 1-2 mm long or absent; summer.

H. chlorantha is occasionally grown and has bright green sepals.

W North America.

Source: Spencer, R. (2002). Saxifragaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.

Heuchera cylindrica 'Greenfinch'

A vigorous grower, the flowers green in a stiff cluster. Raised by Alan Bloom, uk.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     [Saxifraganae]
order      Saxifragales
family       Saxifragaceae
genus        Heuchera L.