Sycidium
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publication ID |
https://doi.org/ 10.11646/phytotaxa.436.2.6 |
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persistent identifier |
https://treatment.plazi.org/id/03E587EE-0A15-FFC6-FF46-C70FB10A58A4 |
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treatment provided by |
Felipe |
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scientific name |
Sycidium |
| status |
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Section- Sycidium View in CoL
Pierantoni et al. (2018) reported the deposition of the cystolith on both the layers and near the veins of the leaves of F. exasperata . They observed a unique mineral deposition of silica in the cone shaped trichomes along with cystoliths on the adaxial layer and all around above the veins of the leaves and named it as silicified trichomes or mineralized spikes. Silica protrudes into the spike completely providing scabrid texture/ rough surface to the leaf surface, probably acting against herbivory. In the present study cystoliths are observed only on the adaxial layer. They are conical shaped cystoliths with verrucate sculpture pattern projecting into the multicellular trichomes (= silicified trichomes).
Among the studied species, this type of peculiar character has been observed only in F. exasperata which is also reported in the abaxial leaf epidermis of F. pygmaea by Greuning et al. (1984) which differentiates it from other species and is placed in the subgenus Sycidium ( Figure 3B View FIGURE 3 ) as that of F. exasperata . Thus, it acts as a distinguishing character for section Sycidium .
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