GRASS GENERA IIIGrasses with Panicoid Spikelets (Beadlike in Appearance)

“PANICOID SPIKELET”

A) Spikelets with Spines or Bristles

Echinochloa (Barnyard Grass)

Echinochloa

Echinochloa

Setaria (Bristlegrass; Foxtail grass)

Setaria

* Setaria pumila(Yellow Bristlegrass)

* Setaria viridis(Green Bristlegrass)

Introduced Setaria

Setaria grisebachii(Grisebach’s Bristlegrass)

Setaria leucopila(Streambed Bristlegrass)

Native Setaria

Setaria or Polypogon?

Setaria versus Polypogon

Cenchrus (Sandbur)

Cenchrus (Sand-Bur)

B) Panicoid Grasses Lacking Spines or BristlesFirst Glume Minute (< .5 mm long)

Digitaria (Crabgrass)

Digitaria

Digitaria sanguinalis (Hairy Crabgrass)Digitaria ischaemum (Smooth Crabgrass)

Digitaria californica (Arizona Cottontop)

Digitaria Look-Alikes

Digitaria vs. Cynodon vs. Chloris

Eriochloa (Cupgrass)

Paspalum (Knotgrass)

Paspalum (Knotgrass)

Paspalum distichum (Knotgrass)

• Wetlands, Riparian Edge Habitat

C) Panicoid Grasses Lacking Spines or BristlesFirst Glume Conspicuous (> .5 mm long)

Panicum – Perennial Species

Panicum obtusum (vine mesquite)

Panicum – Perennial Species

Panicum bulbosum (Bulb Panicum)

Panicum capillare (Fall Witch Grass)

Panicum – Annual Species

PANICOID GRASSES

A) Spikelets with Spines or Bristles: Echinochloa, Setaria, Cenchrus

B) Spikelets Lacking Spines or Bristles; First Glume Minute: Digitaria, Eriochloa, Paspalum

C) Spikelets Lacking Spines or Bristles; First Glume Conspicuous: Panicum