
1) Asterid dicot genus 2) Genus stachys
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https://www.crosswordclues.com/clue/stachys

Stachys is one of the largest genera in the flowering plant family Lamiaceae. Estimates of the number of species in the genus vary from about 300, to about 450. The type species for the genus is Stachys sylvatica. Stachys is in the subfamily Lamioideae. Generic limits and relationships in this subfamily are poorly known. The distribution of the ge...
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http://en.wikipedia.org/wiki/Stachys

(Betony, Bunnies' Ears, Chinese Artichoke, Hedge Nettle, Lamb's Ears, Lamb's Tongue, Woundwort) This group consists of about 300 species of mostly hardy perennials, which belong to the Mint family,
Labiatae. These plants are widely distributed throughout Europe and other north temperate regions and several are found wild in North America.Som...
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http://www.encyclo.co.uk/local/10004

In Greek compounds, signifying a spike.
Found on
http://www.gardenology.org/wiki/Glossary_of_Gardening_Terms

Stachys or sand clover is a genus of hardy herbaceous plants of the family Labiate.
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http://www.probertencyclopaedia.com/browse/BSB.HTM

[
n] - large genus of usually woolly or hairy herbs or subshrubs or shrubs
Found on
http://www.webdictionary.co.uk/definition.php?query=Stachys
genus Stachys noun large genus of usually woolly or hairy herbs or subshrubs or shrubs; temperate eastern hemisphere; tropical Australasia
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.