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133 results for “Urtica dioica”
FIGURE 5 in Weeding the Nettles II: A delimitation of "Urtica dioica L." (Urticaceae) based on morphological and molecular data, including a rehabilitation of Urtica gracilis Ait.
FIGURE 5. Urtica gracilis subsp. incaica: (All from Schwarzer 14), A. Habit of young plant with predominantly male inflorescences, B. Ovate leaves of a young shoot (compare F), note the reddish flushed abaxial surface (left), C. Stem covered with setae with long, asymmetrically curved pluricellular base and numerous simple trichomes, D. Node densely covered with numerous setae, E. Achene, F. Rhizome with young shoots, G. Nodes with leaf pairs and female inflorescences (left) and male inflorescences (right).
FIGURE 1 in Weeding the Nettles II: A delimitation of "Urtica dioica L." (Urticaceae) based on morphological and molecular data, including a rehabilitation of Urtica gracilis Ait.
FIGURE 1. Maximum likelihood tree based on the concatenated data set (ITS, trnL-F, trnS-trnG, psbA-trnH). Bayesian posterior probabilities are indicated above branches, while bootstrap support is indicated below. The first value (bold) refers to the bootstrap support under likelihood, and the second (italics) to the parsimony analysis.
FIGURE 4 in Weeding the Nettles II: A delimitation of "Urtica dioica L." (Urticaceae) based on morphological and molecular data, including a rehabilitation of Urtica gracilis Ait.
FIGURE 4. Urtica gracilis subsp. aquatica: (A, C, F: Schneider s.n., all others: Weigend 7478), A. Habit with mature inflorescences of both sexes, B. Node with mixed inflorescence, male flowers already shed, female branches with mature fruits, C. Young shoot with immature inflorescences, D. Node (section) with leaf pair with adaxial surface (above) and abaxial surface (below) and male inflorescences, E. Achene, F. Node of Schneider s.n. with narrower leaves and female inflorescenes, G. Stinging hair with long, curved pluricellular base.
FIGURE 3 in Weeding the Nettles II: A delimitation of "Urtica dioica L." (Urticaceae) based on morphological and molecular data, including a rehabilitation of Urtica gracilis Ait.
FIGURE 3. Urtica gracilis subsp. holosericea: (all Ahartt 13535), A. Habit with mixed/male inflorescences in the middle (left) and female inflorescences in the distal parts (right) of the shoot, B. Stem with countless simple trichomes and few erect stinging hairs, C. Mature fruit, D. Node (section) with leaf pair, adaxially, E. Node with leaf pair lateral/abaxial view.
FIGURE 2 in Weeding the Nettles II: A delimitation of "Urtica dioica L." (Urticaceae) based on morphological and molecular data, including a rehabilitation of Urtica gracilis Ait.
FIGURE 2. Urtica gracilis subsp. gracilis: (A–D, G: Weigend 9332), A. Habit, B. Node with stipules, C. Stem with scattered simple trichomes and few setae, D–E. Leaf shape variability, D. Narrow leaf pair from Weigend 9332, E. Broader leaves from Liston 1223, F. Ovate achene of U. dioica subsp. dioica for comparative purposes (Weigend 8102), G. Achene of U. gracilis subsp. gracilis.
FIGURE 6 in Weeding the Nettles II: A delimitation of "Urtica dioica L." (Urticaceae) based on morphological and molecular data, including a rehabilitation of Urtica gracilis Ait.
FIGURE 6. Urtica gracilis subsp. mollis: (D: Ricardi et al. 720, all others: Weigend 9356), A. Habit with mixed inflorescences below and female inflorescence above, B. Node (section) with leaf pair, C. Node from the lower part of the shoot with male flowers, D. Achene from Ricardi et al. 720, E. Stem with numerous long setae and simple trichomes, F. Achene from Weigend 9356.
Figure 3 in The Roman snail (Gastropoda: Helicidae) is not a generalist herbivore, but shows food preferences for Urtica dioica and plant litter
Figure 3. Relationship between the average width (a and c) and height (b and d) of Helix pomatia shells per subpopulation independent of the sample date (), and for individual sample dates (●), and the average proportion of individuals feeding on (a, b) Urtica dioica, or (c, d) plant litter.
Figure 2 in The Roman snail (Gastropoda: Helicidae) is not a generalist herbivore, but shows food preferences for Urtica dioica and plant litter
Figure 2. Relationship between the average feeding height of Helix pomatia in the vegetation per subpopulation, independent of the sample date () or for individual sample dates (●), and the average proportion of individuals feeding on (a) Urtica dioica or (b) plant litter.
Figure 1 in The Roman snail (Gastropoda: Helicidae) is not a generalist herbivore, but shows food preferences for Urtica dioica and plant litter
Figure 1. Distance-based redundancy analysis db (RDA) plot showing the resemblance between Helix pomatia subpopulations based on the average diet composition of snails in different subpopulations and at different dates. Subpopulations 1–8 are indicated by different colours and symbols. Vectors are fitted for the predictor variables selected in the distance-based linear model (black: Hgt.shl, average shell height, Hgt.veg, average feeding heigh; Wdt.shl, average width of shells; Smp.day, sample day). Diet resources (in red, with: Urt.dio, Urtica dioica; litter, plant litter) with multiple correlation coefficients> 0.3 are superimposed.
Urtica dioica L. (BR0000010837535)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Urtica dioica L. (BR0000010836781)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Urtica dioica L. (BR0000005387403)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Urtica dioica L. (BR0000022415868)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Urtica dioica L. (BR0000010837498)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Urtica dioica L. (BR0000010837566)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Urtica dioica L. (BR0000010837122)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Urtica dioica L. (BR0000010838259)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Urtica dioica L. (BR0000012213078)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Urtica dioica L. (BR0000010837719)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Urtica dioica L. (BR0000010837528)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
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