Hans Heinrich Pfeiffer (January 10, 1896[a] - 1970)[4] was a German botanist and physiologist, with a particular interest in spermatophytes.
[3] The standard author abbreviation H.Pfeiff.
is used to indicate this person as the author when citing a botanical name.
[5] (incomplete list)[6] (These may not be accepted names.)
(taken from es:Hans Heinrich Pfeiffer)