In the entry for "herbaceous": (hûr-bāshəs, ûr-) According to the Usage Notes, both "an" and "a" are correct in written form (since both pronunciations are co

In the entry for "herbaceous": (hûr-bāshəs, ûr-) According to the Usage Notes, both "an" and "a" are correct in written form (since both pronunciations are correct). If you're reading it out loud, "an herbacious" should be pronounced with a silent "h", and "a herbaceous" should be pronounced with an aspirated "h".