Plants › grasses
Arizona cottontop
Digitaria californica
25 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.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
silver bluestemBothriochloa torreyana
Cane BluestemBothriochloa barbinodis
Bull GrassMuhlenbergia emersleyi
Soft Feather Pappus GrassEnneapogon cenchroides
Silver beard grassBothriochloa laguroides
Texas cottontopDigitaria patens
Whiplash PappusgrassPappophorum vaginatum
natal grassMelinis repens
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 1,275 |
|---|---|
| Texas | 565 |
| Arizona | 412 |
| New Mexico | 191 |
| Oklahoma | 46 |
| California | 26 |
| Mexico | 22 |
| Nevada | 20 |
| Colorado | 10 |
| Argentina | 9 |
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
- Restoration or landscaping useListed as being used for restoration, landscaping, ornamental planting, erosion control, soil improvement, shade, windbreaks, pollution indicators, or wastewater purification.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 |
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 Arizona cottontop with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.