Page 64: 891 results for free
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Cirsium flodmanii (Flodman's thistle)
...more free-standing stems. Flower head profile: the disk is rounded across the top. Stem wings: the...
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Bidens laevis (smooth beggar-ticks)
...more free-standing stems. Stem wings: the stem does not have wings on it. Leaf blade width: 5.0 mm–40.0...
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Echinacea purpurea (eastern purple coneflower)
...more free-standing stems. Bract tip color: the tips are the same color as the center of the bract. Leaf blade shape: ...
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Guizotia abyssinica (niger-seed)
...more free-standing stems. Leaf spines: there are no spines on the leaf edges. Number of bracts at flower head base: ...
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Microseris douglasii (Douglas' silverpuffs)
...more free-standing stems. Leaf blade length: 30.0 mm–250.0 mm. Leaf spines: there are no spines on the l...
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Ambrosia psilostachya (perennial ragweed)
...more free-standing stems. Seed tuft type: there is no pappus on the ovary. Seed hair tuft details: ...
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Helianthus grosseserratus (saw-toothed sunflower)
...more free-standing stems. Ovary cross-section: the ovary is compressed (flattened). Ovary hairs: t...
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Hypochaeris radicata (hairy cat's-ear)
...more free-standing stems. Smaller bracts at base of bracts: there is no smaller, outer cycle of bracts. Disk flower lobe num...
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Ageratum conyzoides (tropical whiteweed)
...more free-standing stems. Number of bracts at flower head base: 30.0 NA–40.0 NA. Reproductive system: al...
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Sagina decumbens (trailing pearlwort)
...has free-central placentation, where the ovules develop on a central column in a compound ovary lacking septa or with septa at the base only. Fruit locules: ...