
1) Botanical nomenclature 2) Nongrass plant 
Found on 
https://www.crosswordclues.com/clue/forb

 A forb (sometimes spelt phorb) is a herbaceous flowering plant that is not a graminoid (grasses, sedges and rushes). The term is used in biology and in vegetation ecology, especially in relation to grasslands and understory. The decline of a number of species of protein-rich forbs during the Glacial Maximum of 25,000 to 15,000 years ago is conside...
Found on 
http://en.wikipedia.org/wiki/Forb

See herb
Found on 
http://florabase.dpaw.wa.gov.au/help/glossary

a non-grasslike herbaceous plant
Found on 
http://www.calflora.net/botanicalnames/botanicalterms.html

<botany> A non-woody plant other than a grass, sedge, rush, in contrast to bryophytes, ferns, fern allies and graminoids. ... Compare: herb. ... (04 Apr 1998) ... 
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http://www.encyclo.co.uk/local/20973

a non-grasslike herbaceous plant
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http://www.encyclo.co.uk/local/21767

A non-grass-like herb of the range.  Small grass-like plant.
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http://www.encyclo.co.uk/visitor-contributions.php

Broadleaved, herbaceous plants that are not grasses.
Found on 
http://www.neonaturalist.com/nature/nature_glossary.html

broadleafed herbaceous plant (e.g., dandelion).
Found on 
http://www.sheep101.info/201/glossary.html

forb A broad-leaved herb other than a grass, especially one growing in a field, prairie, or meadow.
Found on 
http://www.wordinfo.info/words/index/info/view_unit/845/

a small, upright soft-stemmed or non-woody plant with broadleaves; the growthform of many common wildlfowers 
Found on 
https://forums.skadi.net/threads/11491-Biogeography-A-Glossary

A non-woody, herbaceous broadleaf plant that is not a grass, sedge, or rush and is not grass-like.
Found on 
https://www.encyclo.co.uk/local/22442

A broad-leafed flowering herb other than grass.
Found on 
https://www.encyclo.co.uk/local/22831

An herbaceous plant in a prairie or savana that dies to the ground every year at the end of the growing season. Grasses, shrubs and trees are not forbs but “wildflowers” such as coneflower and gayfeather are forbs.
Found on 
https://www.encyclo.co.uk/local/23355

An herbaceous flowering plant that is not a graminoid (grass, sedge, or rush.)  The term is used in biology and in vegetation ecology, especially in relation to grasslands and understory
Found on 
https://www.encyclo.co.uk/local/23362

any herb that is not a grass or grasslike.
Found on 
https://www.infoplease.com/dictionary/forb

Any herb other than grass.
Found on 
https://www.ncforestry.org/teachers/glossary-of-forestry-terms/
  No exact match found.