GRASS GENERA III Grasses with Panicoid Spikelets (Beadlike in Appearance)

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Presentation transcript:

GRASS GENERA III Grasses with Panicoid Spikelets (Beadlike in Appearance)

“PANICOID SPIKELET”

A) Spikelets with Spines or Bristles

Echinochloa (Barnyard Grass)

Echinochloa

Echinochloa

Setaria (Bristlegrass; Foxtail grass)

Setaria

(Yellow Bristlegrass) Introduced Setaria * Setaria pumila (Yellow Bristlegrass) * Setaria viridis (Green Bristlegrass)

(Streambed Bristlegrass) (Grisebach’s Bristlegrass) Native Setaria Setaria leucopila (Streambed Bristlegrass) Setaria grisebachii (Grisebach’s Bristlegrass)

Setaria or Polypogon?

Setaria versus Polypogon

Cenchrus (Sandbur)

Cenchrus (Sand-Bur)

B) Panicoid Grasses Lacking Spines or Bristles First 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 Bristles First Glume Conspicuous (> .5 mm long)

Panicum – Perennial Species Panicum obtusum (vine mesquite)

Panicum – Perennial Species Panicum bulbosum (Bulb Panicum)

Panicum – Annual Species Panicum capillare (Fall Witch Grass)

PANICOID GRASSES 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