Grass Inflorescence Flower Arrangement In grasses Spikelet Arrangement

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Grass Inflorescence = Flower Arrangement (In grasses, Spikelet Arrangement)

Grass Inflorescence = Flower Arrangement (In grasses, Spikelet Arrangement)

Grass Inflorescence Rachis: Stalk to which Spikelets or Branches containing Spikelets Attach Peduncle: Stalk

Grass Inflorescence Rachis: Stalk to which Spikelets or Branches containing Spikelets Attach Peduncle: Stalk of the Inflorescence Flag Leaf: Bract of the Entire Inflorescence

Grass Inflorescence: Rachis, Primary Branch

Grass Inflorescence: Rachis, Primary Branch

Grass Inflorescence Rachis Primary Branch Peduncle Secondary Branch

Grass Inflorescence Rachis Primary Branch Peduncle Secondary Branch

Simple Inflorescences Bouteloua simplex: Single Inflorescence Branch

Simple Inflorescences Bouteloua simplex: Single Inflorescence Branch

Simple Inflorescences Danthonia unispicata: Single Spikelet

Simple Inflorescences Danthonia unispicata: Single Spikelet

Raceme • Spikelets Attached Directly to Rachis via Pedicel • Branches Lacking

Raceme • Spikelets Attached Directly to Rachis via Pedicel • Branches Lacking

Spike • Spikelets Attached Directly to Rachis • Pedicels Lacking • Branches Lacking

Spike • Spikelets Attached Directly to Rachis • Pedicels Lacking • Branches Lacking

Panicle • Inflorescence Branched • Spikelets Attached to Branch

Panicle • Inflorescence Branched • Spikelets Attached to Branch

Open Panicle

Open Panicle

Contracted / Closed Panicle

Contracted / Closed Panicle

Panicle (Primary Branches are Stalked Spikes)

Panicle (Primary Branches are Stalked Spikes)

Panicle (Primary Branches are Unstalked Spikes)

Panicle (Primary Branches are Unstalked Spikes)

Panicle (Multiple Spicate Branches arising from Points on Rachis) “Digitate”

Panicle (Multiple Spicate Branches arising from Points on Rachis) “Digitate”

Panicle (Branches with Stalked, Unstalked Spikelets) Rame: Branch with Pairs of Stalked, Unstalked Spikelets

Panicle (Branches with Stalked, Unstalked Spikelets) Rame: Branch with Pairs of Stalked, Unstalked Spikelets

Inflorescence Terminology • • Flag Leaf • Open Panicle Peduncle • Contracted Panicle Rachis

Inflorescence Terminology • • Flag Leaf • Open Panicle Peduncle • Contracted Panicle Rachis Primary Branch • Panicle of Stalked Spikes Secondary Branch • Panicle of Unstalked Spikes Raceme • Digitate Spike • Rame Panicle

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