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Plant Taxonomy

American Society of Plant Taxonomists

Promoting research and teaching of taxonomy, systematics, and phylogeny of vascular and nonvascular plants. Membership directory allow searching by plant specialty.

Index Herbariorum

An index of the world's herbaria, their staff, contact information, statistics, important collections and publications.

Index Nominum Genericorum

An index initiated in 1954 as a compilation of generic names published for all organisms covered by the International Code of Botanical Nomenclature.