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Petrophytum caespitosum (Rock-spirea), habitatOctober 7 1980
Hedborn Jr., Edward A.
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Petrophytum caespitosum (Rock-spirea), habitat, habit, fallOctober 7 1980
Hedborn Jr., Edward A.
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Petrophytum caespitosum (Rock-spirea), habitat, habit, fallOctober 7 1980
Hedborn Jr., Edward A.
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Petrophytum caespitosum (Rock-spirea), habitat, habit, fallOctober 7 1980
Hedborn Jr., Edward A.
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Penstemon procerus (Small-flowered Penstemon), habit, fall, habitatOctober 6 1980
Hedborn Jr., Edward A.
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Penstemon procerus (Small-flowered Penstemon), habit, fall, habitatOctober 6 1980
Hedborn Jr., Edward A.
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Penstemon fruticosus var. fruticosus (Shrubby Beard Tongue), habit, fallOctober 6 1980
Hedborn Jr., Edward A.
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Paxistima myrsinites (Oregon boxwood), leaf, fallSeptember 11 1981
Hedborn Jr., Edward A.
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Paxistima myrsinites (Oregon boxwood), habit, fall, leaf, fallSeptember 11 1981
Hedborn Jr., Edward A.
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Paxistima myrsinites (Oregon boxwood), habit, fall, leaf, fallSeptember 11 1981
Hedborn Jr., Edward A.
Article
A Systematic Review of the Aceraceae (Doctoral Dissertation of Thomas J. Delendick)1980
Delendick, Thomas J.
Article
Soil Moisture and Temperature Results on the Morton Arboretum Prairie and Forest Sites for the 1987 and 1988 Growing SeasonsAugust 24 1988
Altvatter, Kim