USGS - science for a changing world

Science Topics

Maps, Imagery, and Publications Hazards Newsroom Education Jobs Partnerships Library About USGS Podcasts/RSS
You are here: Topics > Organisms > Plants (organisms)
Help
Nonvascular plants
Simple plants which lack conducting tissues known as vascular bundles, a group of specialized cells made up of xylem and phloem.
Subtopics:
Liverworts and hornworts (1 items)
Mosses (4 items)
Related topics:
Results 1 - 7 of 7 listed by similarity [list alphabetically]
Biological resource status and trends: Nonvascular plants [New Window]
Information concerning status and trends of biological resources, focusing on nonvascular plants such as mosses and algae
Biological soil crusts [New Window]
Explains biological soil crusts, organism-produced soil formations commonly found in semiarid and arid environments, with special reference to their biological composition, physical characteristics, and ecological significance.
PDF Biological soil crusts: webs of life in the desert [New Window]
Fact sheet on the need to protect biological soil crusts in the desert. These crusts are most of the soil surface in deserts not covered by green plants and are inhabited by cyanobacterium (blue-green algae) and other organisms useful to the ecosystem.
PDF Bryophytes and lichens, small but indispensable forest dwellers [New Window]
Description of bryophytes (mosses, liverworts, and hornworts) and lichens (dual organisms of a fungus and an alga or a cyanobacterium) that are part of forest ecosystems in the Pacific Northwest with information on habitat and conservation.
Cryptobiotic soils: holding the place in place [New Window]
Describes biological soil crusts, with special reference to their role in resisting soil erosion, improving soil fertility, and increasing water infiltration in the deserts of the Colorado Plateau region.
NPElement: A database of lichen elemental concentrations in the U.S. national parks [New Window]
Database providing concentration of heavy metals, nutrients, and trace elements in 75 species of lichens sampled in 43 national park units in 24 states.
NPLichen: A database of lichens in the U.S. national parks [New Window]
Web interface for a database of documented occurrences of lichens in units of the U. S. National Park System. The records were obtained from the scientific literature, from National Park Service reports, and from selected herbaria.


Alphabetical Index of Topics a b c d e f g h i j k l m n o p q r s t u v w x y z

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.usgs.gov/science//science/science.php?term=801
Page Contact Information: Ask USGS