Agastache pallidiflora — Overview

Bill Williams Mountain Giant Hyssop learn more about names for this taxon

IUCN threat status:

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Bill Williams Mountain giant hyssop (Agastache pallidiflora) is a perennial forb (a herbaceous flowering plant other than a grass) in the Lamiaceae family. Native to Arizona, Colorado, New Mexico and Texas in North America, it grows single or multiple stems to over thirty inches tall, with 1/3 inch long flowers that arise from prominent pale green calyxes that occur in densely packed clusters. It's flowers range from white to pink to purple.

The Southwest Colorado Wildflower site reports "John Clayton named this genus in 1762 and the species was at first named Brittonastrum pallidiflora by Amos Heller in 1899. Per Axel Rydberg renamed it Agastache pallidiflora in 1906. Greek gives us both "agan" ("many") and "stachys" ("spikes") "Pallidiflora" is Latin for "pale flower"."

Two subspecies are identified - Agastache pallidiflora ssp. pallidiflora (native to Arizona, Colorado and New Mexiso) and Agastache pallidiflora ssp. neomexicana (native to New Mexico and Texas).

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Supplier: Bob Corrigan

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