Plants › grasses

Fall Witchgrass

Digitaria cognata

Wildlife study photograph from iNaturalist. — (c) austinrkelly, some rights reserved (CC BY-NC)

All photos28

28 photos

Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.

See all photos Add a photo

Photos you add are credited to you, and you keep the copyright.

Easily confused with

Study checks a spoken answer against these, and tells you which one you named.

Where it is recorded

Records by month in Texas.

United States	2,530
Texas	702
Canada	346
Ontario	346
Wisconsin	216
Michigan	207
Kansas	159
Missouri	134
Minnesota	133
Oklahoma	94

Counts show where people looked, not only where it lives.

Traits

Group and habits

Crop wild relativeListed as a crop wild relative or crop gene source by a harvested source.Kew World Checklist of Useful Plant Species
Grass-like growth formListed by a harvested source as having a graminoid or grass-like growth form.USDA PLANTS Characteristics
Perennial plantListed by a harvested source as having a perennial life duration.USDA PLANTS Characteristics

Classification

Kingdom	Plants · Plantae
Phylum	Vascular Plants · Tracheophyta
Class	monocots · Liliopsida
Order	grasses, sedges, cattails, and allies · Poales
Family	grasses · Poaceae
Genus	crabgrasses, cottontops, and allies · Digitaria

Study it in a deck

Or build your own from the species near you.

Sources

Names, taxonomy and observation counts: www.inaturalist.org
Photos and recordings: the creator and source are on each one.
Traits: Kew World Checklist of Useful Plant Species (CC BY 4.0)
Traits: USDA PLANTS Characteristics (U.S. Government work / public domain)
How much to rely on each source

Remember the name next time.

Practise Fall Witchgrass with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.

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