1) Cow parsnip 2) Exclusively Anglo word 3) Exclusively Saxon word 4) Heracleum sphondylium 5) Herb 6) Herbaceous plant 7) Word of purely Anglo origin 8) Word with Anglo-Saxon origins Found on https://www.crosswordclues.com/clue/hogweed
Hog'weed` noun (Botany) (a) A common weed ( Ambrosia artemisiæge ). See Ambrosia , 3. (b) In England, the Heracleum Sphondylium . Found on http://www.encyclo.co.uk/webster/H/52