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Tyrl, Ronald J.
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1

Drought and Grazing Effects on Oklahoma Phlox (Polemoniacea..:

Springer, Tim L. ; Gunter, Stacey A. ; Tyrl, Ronald J..
American Journal of Plant Sciences.  4 (2013)  6 - p. 9-13 , 2013
Link: https://doi.org/10.4236/..
 
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2

Toxic plants of North America:

Burrows, George E ; Tyrl, Ronald J - Second edition . , 2013
Link: https://onlinelibrary.wi..
 
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3

Vascular Flora of the Pushmataha Wildlife Management Area, ..:

Crandall, Raelene M. ; Tyrl, Ronald J.
Castanea.  71 (2006)  1 - p. 65-79 , 2006
Link: https://www.jstor.org/st..
 
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4

Contributors:

, In: Clinical Veterinary Toxicology,
Albretsen, Jay C. ; Allen, Jeremy ; Bataller, Neal... - p. v-ix , 2004
Link: https://doi.org/10.1016/..
 
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5

Toxic Plants of North America:

Schmid, Rudolf ; Burrows, George E. ; Tyrl, Ronald J.
Taxon.  50 (2001)  4 - p. 1290 , 2001
Link: https://doi.org/10.2307/..
 
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6

Effects of Mechanical Damage on Cheat (Bromus secalinus) Ca..:

Reonna R. Slagell Gossen ; Tyrl, Ronald J. ; Marilyne Hauhouot...
Weed Science.  46 (1998)  2 - p. 249-257 , 1998
Link: https://www.jstor.org/st..
 
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7

A TAXONOMIC INVESTIGATION OF CUSCUTA ATTENUATA (CUSCUTACEAE..:

PRATHER, L. ALAN ; TYRL, RONALD J. ; WARDE, WILLIAM D.
SIDA, Contributions to Botany.  16 (1995)  3 - p. 447-458 , 1995
Link: https://www.jstor.org/st..
 
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8

Comparative Anatomy of the Spikelet Callus of Eriochloa, Br..:

Thompson, Rahmona A. ; Tyrl, Ronald J. ; Estes, James R.
American Journal of Botany.  77 (1990)  11 - p. 1463-1468 , 1990
Link: https://www.jstor.org/st..
 
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9

A Biosystematic Study of the Relationship of Nama hispidum ..:

Tyrl, Ronald J. ; Erteeb, Fathi B. ; Bruner, Joe L....
The Southwestern Naturalist.  29 (1984)  4 - p. 367-375 , 1984
Link: https://www.jstor.org/st..
 
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10

CYTOGEOGRAPHY OF ACHILLEA MILLEFOLIUM IN OKLAHOMA AND ADJAC..:

Pireh, Wilma ; Tyrl, Ronald J.
Rhodora.  82 (1980)  830 - p. 361-367 , 1980
Link: https://www.jstor.org/st..
 
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11

Gathering of Ipomopsis rubra (Polemoniaceae) Nectar by Bomb..:

Tyrl, Ronald J.
The Southwestern Naturalist.  23 (1978)  1 - p. 153-154 , 1978
Link: https://www.jstor.org/st..
 
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12

Origin and Distribution of Polyploid Achillea (Compositae) ..:

Tyrl, Ronald J.
Brittonia.  27 (1975)  2 - p. 187-196 , 1975
Link: https://www.jstor.org/st..
 
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13

Origin and Distribution of Polyploid Achillea (Compositae) ..:

Tyrl, Ronald J.
Brittonia.  27 (1975)  2 - p. 187 , 1975
Link: https://doi.org/10.2307/..
 
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14

Cytogeography of Achillea Millefolium in Western Oregon:

Tyrl, Ronald J.
Brittonia.  21 (1969)  3 - p. 215-223 , 1969
Link: https://www.jstor.org/st..
 
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15

Cytogeography of Achillea Millefolium in Western Oregon:

Tyrl, Ronald J.
Brittonia.  21 (1969)  3 - p. 215 , 1969
Link: https://doi.org/10.2307/..
 
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