Amaranthus powellii S.Wats. (Powell's amaranth), close-up of inflorescence (3.100935)
Date: September 1978Creator: Dritz, Ken
Type: Photographic image
Description:Amaranthus powellii S.Wats. (Powell's amaranth), close-up of pale green inflorescence
Extent: 1 slide
Amaranthus powellii S.Wats. (Powell's amaranth), stalk with inflorescence (3.100937)
Date: June 1980Creator: Dritz, Ken
Type: Photographic image
Description:Amaranthus powellii S.Wats. (Powell's amaranth), stalk with inflorescence
Extent: 1 slide
Arabis canadensis L. (sicklepod), close-up of flowers on stem (3.100974)
Date: June 1980Creator: Dritz, Ken
Type: Photographic image
Description:Arabis canadensis L. (sicklepod), dramatic photo of a single stalk of Arabis canadensis against a black background. The loose cluster of flowers at the end of the stem are beginning to open, from the bottom up.
Extent: 1 slide
Arabis canadensis L. (sicklepod), habit (3.100977)
Date: June 1980Creator: Dritz, Ken
Type: Photographic image
Description:Arabis canadensis L. (sicklepod), viewed is a single stalk of an Arabis canadensis, against a muted dark background. The stalk has a sparse showing of alternate leaves, with a sall cluster of florets at the terminal end.
Extent: 1 slide
Arabis hirsuta (L.) Scop. var. glabrata Torr. & A. Gray (mountain rock cress), habit (3.100981)
Date: June 1978Creator: Dritz, Ken
Type: Photographic image
Description:Arabis hirsuta (L.) Scop. var. glabrata Torr. & A. Gray (mountain rock cress), in view is a single stalk of Arabis hirsuta, situated in a bed of ferns. The slender stalk has alternating leaves sparsely spaced, leading to the plant's end, which sports a small cluster of white florets.
Extent: 1 slide
Aralia elata (Miq.) Seem. (Japanese angelica tree), close-up of flowers, inflorescence (3.100994)
Date: August 1981Creator: Dritz, Ken
Type: Photographic image
Description:Aralia elata (Miq.) Seem. (Japanese angelica tree), inflorescence, with clear view of stamens extending beyond the petals
Extent: 1 slide
Aralia elata (Miq.) Seem. (Japanese angelica tree), branches with leaves and flowers (3.100997)
Date: September 1981Creator: Dritz, Ken
Type: Photographic image
Description:Aralia elata (Miq.) Seem. (Japanese angelica tree), view of a stand of Japanese angelica tree, with several cloud like white inflorescences, against a background of large dark green bipinnate leaves
Extent: 1 slide
Aralia hispida Vent. (bristly sarsparilla), habit (3.101006)
Date: July 1981Creator: Dritz, Ken
Type: Photographic image
Description:Aralia hispida Vent. (bristly sarsparilla), view of a single stalk of Aralia hispida, against a dark background of browned oak leaf litter. Most of the very tiny white flowers are in bloom. Some flowers are past bloom and beginning to form berries.
Extent: 1 slide
Arctium lappa L. (greater burdock), flowers on stems (3.101066)
Date: August 1979Creator: Dritz, Ken
Type: Photographic image
Description:Arctium lappa L. (greater burdock), close view of a stand of Arctium lappa, long stems topped with bundles of flowering burrs, surrounded by coarse, dark green leaves.
Extent: 1 slide
Arctium lappa L. (greater burdock), close-up of burrs (3.101067)
Date: August 1979Creator: Dritz, Ken
Type: Photographic image
Description:Arctium lappa L. (greater burdock), beautiful close-up view of three Arctium lappa burrs in flower. Spiny bracts enclose the flower heads, with slender white stamen bursting from delicate purple petals.
Extent: 1 slide
Aristida basiramea Engelm. (forked three-awn), awns (3.101151)
Date: October 1967Creator: Dritz, Ken
Type: Photographic image
Description:Aristida basiramea Engelm. (forked three-awn), awns
Aristida basiramea Engelm. (forked three-awn), habit (3.101152)
Date: October 1987Creator: Dritz, Ken
Type: Photographic image
Description:Aristida basiramea Engelm. (forked three-awn), view of what appears to be early spring growth of the bunch grass. Slender green stalks weave through the dried grass remnants.
Extent: 1 slide
Aristolochia serpentaria L. (Virginia snakeroot), flower (3.101181)
Date: July 1979Creator: Dritz, Ken
Type: Photographic image
Description:Aristolochia serpentaria L. (Virginia snakeroot), view of an open bloom, purplish and glabrous
Extent: 1 slide
Neobeckia aquatica (Eaton) Greene (lakecress), flowers, habit (3.101199)
Date: June 1978Creator: Dritz, Ken
Type: Photographic image
Description:Neobeckia aquatica (Eaton) Greene (lakecress), a long range view of lake cress in bloom
Extent: 1 slide
Neobeckia aquatica (Eaton) Greene (lakecress), close-up of flowers (3.101200)
Date: June 1978Creator: Dritz, Ken
Type: Photographic image
Description:Neobeckia aquatica (Eaton) Greene (lakecress), beautiful close-up view of a single umbel, with several opened white flowers. the stamen and sepals are clearly seen, with tightly closed flowers in the background, looking like golden pearls.
Extent: 1 slide
Armoracia rusticana G.Gaertn., B.Mey. & Scherb. (horseradish), leaves, habit (3.101201)
Date: June 1980Creator: Dritz, Ken
Type: Photographic image
Description:Armoracia rusticana G.Gaertn., B.Mey. & Scherb. (horseradish), horseradish plant, with large dark green paddle shaped leaves, with loosely serrated edges/sprigs of tiny white flowers rise above the base of leaves.
Extent: 1 slide
Aronia melanocarpa (Michx.) Elliott (black chokeberry), growing habit (3.101240)
Date: June 1978Creator: Dritz, Ken
Type: Photographic image
Description:Aronia melanocarpa (Michx.) Elliott (black chokeberry), growing habit with dense thicket showing dark green leaves surrounded by a multitude of delicate white flower heads.
Extent: 1 slide
Aronia prunifolia (Marsh.) Rehd. (purple chokeberry), habit (3.101246)
Date: May 1982Creator: Dritz, Ken
Type: Photographic image
Description:Aronia prunifolia (Marsh.) Rehd. (purple chokeberry), side view of the plant's habit
Extent: 1 slide
Aronia prunifolia (Marsh.) Rehd. (purple chokeberry), close-up of flowers (3.101251)
Date: June 1979Creator: Dritz, Ken
Type: Photographic image
Description:Aronia prunifolia (Marsh.) Rehd. (purple chokeberry), close-up of flowers
Extent: 1 slide
Asclepias lanuginosa Nutt. (wooly milkweed), habit (3.103761)
Date: December 1980Creator: Dritz, Ken
Type: Photographic image
Description:Asclepias lanuginosa Nutt. (wooly milkweed), habit
Extent: 1 slide
Asimina triloba (L.) Dunal (pawpaw), close-up of flower (3.103937)
Date: May 1981Creator: Dritz, Ken
Type: Photographic image
Description:Asimina triloba (L.) Dunal (pawpaw), close-up of purple flower
Extent: 1 slide
Asplenium platyneuron L. (Ebony Spleenwort), close-up of frond with sori (spores) (3.103981)
Date: July 1979Creator: Dritz, Ken
Type: Photographic image
Description:Asplenium platyneuron L. (Ebony Spleenwort), close-up of frond with sori (spores)
Extent: 1 slide
Asplenium platyneuron L. (Ebony Spleenwort), habit (3.103982)
Date: June 1980Creator: Dritz, Ken
Type: Photographic image
Description:Asplenium platyneuron L. (Ebony Spleenwort), habit, forest floor and other plants in background
Extent: 1 slide
Symphyotrichum dumosum (L.) G.L. Nesom (bushy aster), habit (3.104005)
Date: December 1980Creator: Dritz, Ken
Type: Photographic image
Description:Symphyotrichum dumosum (L.) G.L. Nesom (bushy aster), habit, white flowers, stems, and leaves, other plants in background
Extent: 1 slide
Symphyotrichum dumosum (L.) G.L.Nesom (bushy aster), close-up of flowers (3.104006)
Date: December 1980Creator: Dritz, Ken
Type: Photographic image
Description:Symphyotrichum dumosum (L.) G.L.Nesom (bushy aster), close-up of flowers, frontal and side views, white/lavender ray petals and yellowish disk flowers
Extent: 1 slide
Symphyotrichum ciliatum (Ledeb.) G.L.Nesom (rayless aster), close-up of flower bud (3.104020)
Date: November 1980Creator: Dritz, Ken
Type: Photographic image
Description:Symphyotrichum ciliatum (Ledeb.) G.L.Nesom (rayless aster), close-up of flower bud
Extent: 1 slide
Symphyotrichum boreale (Torr. & A. Gray) A. Löve & D. Löve (Northern bog aster), flower on stem (3.104039)
Date: May 1985Creator: Dritz, Ken
Type: Photographic image
Description:Symphyotrichum boreale (Torr. & A. Gray) A. Löve & D. Löve (Northern bog aster), flower on stem
Extent: 1 slide
Symphyotrichum boreale (Torr. & A. Gray) A. Löve & D. Löve (Northern bog aster), close-up of single flower (3.104040)
Date: September 1979Creator: Dritz, Ken
Type: Photographic image
Description:Symphyotrichum boreale (Torr. & A. Gray) A. Löve & D. Löve (Northern bog aster), close-up of single flower: multiple white ray flowers with yellow center disk flowers
Extent: 1 slide
Ionactis linariifolia (L.) Greene (flax-leaved white-topped aster), habit (3.104051)
Date: December 1980Creator: Dritz, Ken
Type: Photographic image
Description:Ionactis linariifolia (L.) Greene (flax-leaved white-topped aster), habit: clusters of flowerheads and bud, purplish ray flowers and yellow disc flowers, stems and alternate leaves in a whorled shape, other plants and dirt in background
Extent: 1
Symphyotrichum praealtum (Poir.) G.L. Nesom (willow aster), habit (3.104071)
Date: December 1980Creator: Dritz, Ken
Type: Photographic image
Description:Symphyotrichum praealtum (Poir.) G.L. Nesom (willow aster), habit, lavender ray flowers with yellow center discs, stem and alternate leaves, other plants in background
Extent: 1 slide
Symphyotrichum firmum (Nees) G.L. Nelson (glossy leaved aster), habit (3.104076)
Date: December 1980Creator: Dritz, Ken
Type: Photographic image
Description:Symphyotrichum firmum (Nees) G.L. Nelson (glossy leaved aster), stem with leaves and flowers; white ray flowers with yellow disc centers; other plants in background.
Extent: 1 slide
Symphyotrichum puniceum (L.) A. Love & D. Love (glossy-leaf aster), stem with flowers (3.104078)
Date: October 1980Creator: Dritz, Ken
Type: Photographic image
Description:Symphyotrichum puniceum (L.) A. Love & D. Love (glossy-leaf aster), stem with flowers, lavender ray flowers with yellow disc centers, alternate leaves
Extent: 1 slide
Symphyotrichum lanceolatum (Willd.) G.L. Nesom (panicled aster), habit (3.104097)
Date: October 1981Creator: Dritz, Ken
Type: Photographic image
Description:Symphyotrichum lanceolatum (Willd.) G.L. Nesom (panicled aster), plant; stem with alternate leaves and panicles of flowers; daisy-like flowerheads with purplish ray flowers and yellow disc flower centers.
Extent: 1 slide
Athyrium filix-femina var. angustum (Willd.) G. Lawson (northern lady fern), close-up of frond underside (3.104148)
Date: July 1978Creator: Dritz, Ken
Type: Photographic image
Description:Athyrium filix-femina var. angustum (Willd.) G. Lawson (northern lady fern), close-up of frond underside; spores.
Extent: 1 slide
Athyrium filix-femina (L.) Roth (lady ferrn), habit (3.104151)
Creator: Dritz, Ken
Type: Photographic image
Description:Athyrium filix-femina (L.) Roth. ex Mert. (lady ferrn), habit
Extent: 1 slide
Baptisia tinctoria (L.) R. Br. ex Ait. f. (yellow false indigo), several yellow flowers (3.105189)
Date: August 1984Creator: Dritz, Ken
Type: Photographic image
Description:Baptisia tinctoria (L.) R. Br. ex Ait. f. (yellow false indigo), several yellow flowers
Extent: 1 slide