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Orobanchaceae
Orobanche
Orobanche valida subsp. howellii
Orobanche valida subsp. howellii
Heckard & L.T.Collins, 1982
6% complete
No common name
Madroño 29: 98 (1982)
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Synonyms
Aphyllon validum subsp. howellii
(Heckard & L.T.Collins) A.C.Schneid.