| Noun | 1. | alumbloom - any of several herbs of the genus Heucheraherb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests genus Heuchera, Heuchera - genus of North American herbs with basal cordate or orbicular leaves and small panicled flowers Heuchera americana, rock geranium - plant with basal leaves mottled with white and flowers in lax panicles on erect stems Heuchera cylindrica, poker alumroot, poker heuchera - plant with leathery heart-shaped leaf blades clustered at base of long stalks with greenish-white flowers clustered along the upper part; western North America coralbells, Heuchera sanguinea - perennial plant of the western United States having bright red flowers in feathery spikes; used as an ornamental |