Howard Alvin Crum
Howard Alvin Crum ( July 14 , 1922 – April 30 , 2002 ) was an American botanist dedicated to the study of mosses , and was a renowned expert on the North American bryoflora . 
<triplet> Howard Alvin Crum <subj> July 14, 1922 <obj> date of birth <subj> April 30, 2002 <obj> date of death <subj> American <obj> country of citizenship <triplet> American <subj> North American <obj> part of <triplet> mosses <subj> botanist <obj> part of <triplet> North American <subj> American <obj> has part