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Type of the mildest mutation, this trillium is normal apart from the
green stripes on its petals and its abnormally large reproductive organs
(the stamens and carpels are much larger than normal in all infected
individuals). This photograph appeared in the September/October 1998
issue of "Canadian Geographic Magazine."
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A normal trillium and an infected trillium. Note the leaf-like carpels
of the infected trillium.
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A trillium with two whorls of petals. Note also the white-tipped sepals.
This photograph appeared in the September/October 1998
issue of "Canadian Geographic Magazine."
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Oone of the stamens has transformed into a petal on this trillium. The
plant also possesses an extra whorl of leaves (?) directly beneath the
sepals.
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On this trillium the petals have transformed to leaves or sepals; the
stamens have transformed to petals; and the carpels have transformed to
leaves/sepals.
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On this trillium the petals have transformed to leaves or sepals; the
stamens have transformed to petals; and the carpels have transformed to
leaves/sepals.
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This trillium possesses two whorls of sepals and four whorls of leaf-like
petals (only 2 petals appear to occupy the innermost whorl). Reproductive
whorls are completely absent.
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This is a second individual possessing the same pattern as [the plant]
above.
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Same pattern as in [two previous] photos ... except that this individual
has 5 whorls of petals.
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This individual has two sets of ruffled green-striped petals. Note also
that there are only four stamens and only two carpels.
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This individual is similar to that shown in [the above photograph] except
that there are no carpels and only three stamens. This photograph appeared
in the September/October 1998 issue of "Canadian Geographic Magazine."
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This is a 'numbers mutant' which may be the product of damage to the floral
meristem, although the green stripes in the petals suggest that a
mycoplasm infection might also be the cause. There are only two leaves,
sepals, and petals. The reproductive whorls are unaffected. Other numbers
were observed, such as one flower with four leaves, sepals, and petals.
[note from SBF: this was named forma dimerum. The specimin of this
that I have seen also had a green stripe.]
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This is a common phenotype. The petals are nearly completely green, the
anthers are twice normal size, and the two (?) whorls of carpels have been
transformed into leaf-like structures. This photograph appeared in the
September/October 1998 issue of "Canadian Geographic Magazine."
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In this indicidual the entire flower has been transformed into whorls of
leaves. Note that the leaves do not attach directly to the stalk, but
have developed long petioles. A few individuals of this type were observed.
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