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Betula populifolia Marsh. (gray birch), developing male and female catkinsApril 1973
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Betula papyrifera Marshall (paper birch), leaves on twigsAugust 1973
Stickney, William S.
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Betula papyrifera Marshall (paper birch), tree trunk with peeling white barkAugust 1973
Stickney, William S.
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Betula alleghaniensis Britton (yellow birch), peeling bark with single leafOctober 1973
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Betula alleghaniensis Britton (yellow birch), peeling bark of a young tree, lenticels visibleOctober 1973
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Berberis thunbergii ‘Atropurpurea Nana’ (Crimson Pygmy Japanese barberry), habitJune 1973
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Baptisia bracteata var. leucophaea (Nutt.) Kartez & Gandhi (cream wild indigo), newly emerging plantApril 20 1973
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Baptisia bracteata var. leucophaea (Nutt.) Kartez & Gandhi (cream wild indigo), flowersJuly 1973
Lamp, Herbert F.
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Baptisia bracteata var. leucophaea (Nutt.) Kartez & Gandhi (cream wild indigo), flowersJuly 1973
Lamp, Herbert F.
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Baptisia bracteata var. leucophaea (Nutt.) Kartez & Gandhi (cream wild indigo), several plants with some in bloomJuly 1973
Lamp, Herbert F.
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Baptisia bracteata var. leucophaea (Nutt.) Kartez & Gandhi (cream wild indigo), flowersJuly 1973
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Baptisia alba var. macrophylla (Larisey) Isley (white wild indigo), stalk with seed podsJuly 1973
Lamp, Herbert F.
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Baptisia alba var. macrophylla (Larisey) Isley (white wild indigo), close-up of seed podsJuly 1973
Lamp, Herbert F.
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Baptisia alba var. macrophylla (Larisey) Isley (white wild indigo), plant with seed podsJuly 1973
Lamp, Herbert F.
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Baptisia alba var. macrophylla (Larisey) Isley (white wild indigo), flower stalkAugust 1973
Dobry, Ronald
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Baptisia bracteata var. leucophaea (Nutt.) Kartez & Gandhi (cream wild indigo), habit with flowering branchesJuly 1973
Lamp, Herbert F.
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Baptisia bracteata var. leucophaea (Nutt.) Kartez & Gandhi (cream wild indigo), flowersJuly 1973
Lamp, Herbert F.
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Baptisia bracteata var. leucophaea (Nutt.) Kartez & Gandhi (cream wild indigo), habit, habitat
July 1973
Lamp, Herbert F.
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Baptisia alba var. macrophylla (Larisey) Isley (white wild indigo), developing fruits
July 1973
Lamp, Herbert F.
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Baptisia alba var. macrophylla (Larisey) Isley (white wild indigo), developing fruits
June 1973
Lamp, Herbert F.
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Athyrium thelypterioides (lady fern), close-up of underside of frond with sporesOctober 1973
Schrattenholzer, Friedrich
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Astragalus canadensis (Canada milkvetch), close-up of fruitSeptember 1973
Lamp, Herbert F.
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Astragalus canadensis (Canada milkvetch), close-up of fruitSeptember 1973
Lamp, Herbert F.