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Life Span and Rhizomes

not every character is illustrated

Life Span

R-1. Life span: 0 = perennial; 1 = annual.

Rhizomes / Culm Bases (in adult / mature plants)

R-2. Leptomorph rhizomes: 0 = present; 1 = absent.

R-3. Culm base morphology: 0 = slender (all internodes more or less equal in diameter) and more or less vertical; 1 = at least some proximal internodes thicker than the distal internode(s) emerging from the soil and more or less horizontal (pachymorph).

R-4. Culm base branching (tillering): 0 = tillering absent; 1 = 1 tiller per culm base present; 2 = 2 or more tillers per culm base present.

R-5. Culm neck development: 0 = short (neck < the length of the culm base section with relatively short, bud-bearing internodes); 1 = at least some culm necks long (neck > the length of the culm base section with relatively short, bud-bearing internodes).

Life Span and Rhizomes
Culms
Buds and Branching
Culm Leaves
Foliage Leaves
Synflorescences
Spikelets
Flowers and Fruits
Leaf Anatomy
Leaf Micromorphology

r-2
R-2, click for larger image
r-3
R-3, click for larger image
r-4
R-4, click for larger image
r-5
R-5, click for larger image

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Contact - Dr. Lynn Clark   Copyright © 2005-2006, Iowa State University. All rights reserved.