This authoritative and easy-to-use guide features 708 types of trees found in North America, with nearly 4,000+ photographs, text descriptions to help identify tree species, and robust search functions to aid in species identification. 

Utilizing the latest iOS technologies, you can: 
 
• Search by name (common and scientific) using either keyboard or verbal search systems; type or speak all or part of a mushroom’s name to search for its detailed account. 
• Organize species alphabetically or taxonomically. 
• Search by region, leaf or needle shape and arrangement, bark type, color, flower and fruit type, color—or any combination. 
• Touch to open any or all of the text sections and to enlarge photos to aide with identification in the field. 
• Take notes and upload photos to keep a digital journal of your observations and share them with family, friends, and our growing online community. 
 
Each species account contains: 
 
• description with identification details 
• habitat description 
• range information 
• discussion about the species’ history, habitat, flower, leaf types, fruit and other notable characteristics 
• taxonomic Order information 
• photos of similar species with links to those species’ accounts 
• links to additional information for every species 
 
Other National Wildlife Federation Nature Guide apps in this series include: 
 
Wildlife Guides 
• National Wildlife Federation Guide to Birds 
• National Wildlife Federation Guide to Mammals 
• National Wildlife Federation Guide to Reptiles 
• National Wildlife Federation Guide to Amphibians 
• National Wildlife Federation Guide to Butterflies 
• National Wildlife Federation Guide to Insects and Spiders 
• National Wildlife Federation Guide to Mushrooms 
 
Garden Guides 
• National Wildlife Federation Guide to Herbs 
• National Wildlife Federation Guide to Vegetables