Putnam Museum and Science Center

<p>The Putnam Museum &amp;amp; Science Center herbarium holds nearly 19,000 specimens. Contributions to the collection, made by approximately 450 botanists, span the years 1834 to 1989 and represent 20 countries. The herbarium is largely of North American origin (92%). Though 46 U.S. states and Washington, D.C. are represented, nearly half of the specimens are from Iowa and Illinois (48%), due to extensive collecting completed to document the flora of the Quad Cities region. Angiosperms predominate (92%), but pteridophytes (3.5%), bryophytes (2.6%), and algae (1.2%) are also present. Of the approximately 1450 genera in 314 families in the herbarium, the Asteraceae, Cyperaceae, Fabaceae, Poaceae, and Rosaceae combined make up 38% of the total.</p>

普特南博物馆与科学中心标本馆收藏了近19,000件标本。该馆藏品由约450位植物学家贡献，时间跨度从1834年至1989年，涵盖了20个国家。标本馆的藏品以北美起源为主（92%）。尽管展示了46个美国州以及哥伦比亚特区的植物，但近一半的标本（48%）来源于爱荷华州和伊利诺伊州，这得益于对四城地区植物群落进行广泛收集以进行记录的努力。被子植物占据主导地位（92%），但蕨类植物（3.5%）、苔藓植物（2.6%）和藻类（1.2%）亦有所分布。在标本馆的314个科中，约1,450个属的植物中，菊科、莎草科、豆科、禾本科和蔷薇科的总计占据了总数的38%。