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Ray Schulenberg Watering Seedlings in Greenhouse December 1973
Godshalk, Clarence E.
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Viola pedata L. (bird’s foot violet), flowers, habitMay 12 1973
Armstrong, Patricia K.
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Sorghastrum nutans (L.) Nash (Indian grass), seeds on stems
September 1973
Armstrong, Patricia K.
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Aralia elata (Miq.) Seem. (Japanese angelica tree), bark, branchOctober 1973
Schrattenholzer, Friedrich
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Aralia elata (Miq.) Seem. (Japanese angelica tree), close-up of stem and budsOctober 1973
Schrattenholzer, Friedrich
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Moehringia lateriflora (L.) Fenzl (bluntleaf sandwort), habitMay 1973
Lamp, Herbert F.
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Moehringia lateriflora (L.) Fenzl (bluntleaf sandwort), close-up of flowerMay 1973
Lamp, Herbert F.
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Moehringia lateriflora (L.) Fenzl (bluntleaf sandwort), flowerMay 1973
Lamp, Herbert F.
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Arctostaphylos uva-ursi (L.) Spreng. (bearberry), flowersMay 1973
Schrattenholzer, Friedrich
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Argemone polyanthemos (Fedde) G.B. Ownbey (prickly poppy), flowers on stemsMay 1973
Kohout, Kitty
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Asclepias hirtella (Pennell) Woodson (tall green milkweed), habitJuly 1973
Lamp, Herbert F.
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Asclepias hirtella (Pennell) Woodson (tall green milkweed), flowersJuly 1973
Lamp, Herbert F.
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Asclepias hirtella (Pennell) Woodson (tall green milkweed), close-up of flowersJuly 1973
Lamp, Herbert F.
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Asclepias purpurascens L. (purple milkweed), close-up of flowersJuly 1973
Lamp, Herbert F.
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Asclepias purpurascens L. (purple milkweed), close-up of flowersJuly 1973
Lamp, Herbert F.
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Asclepias purpurascens L. (purple milkweed), close-up of flowers and budsJuly 1973
Lamp, Herbert F.
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Asclepias purpurascens L. (purple milkweed), close-up of flowersJuly 1973
Lamp, Herbert F.
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Asclepias purpurascens L. (purple milkweed), flowers and leavesJuly 1973
Lamp, Herbert F.
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Asclepias purpurascens L. (purple milkweed), flowers, buds, leafJuly 1973
Lamp, Herbert F.