Bronwenia
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publication ID |
https://doi.org/ 10.11646/phytotaxa.599.4.4 |
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DOI |
https://doi.org/10.5281/zenodo.8038801 |
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persistent identifier |
https://treatment.plazi.org/id/0398305D-FF8B-FFBC-FF25-FAB8FEFD4A37 |
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treatment provided by |
Plazi |
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scientific name |
Bronwenia |
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Bronwenia View in CoL View at ENA species identification key
1. Presence of malpighiaceous trichomes on the leaf blade ( Fig.2F View FIGURE 2 ).....................................................................................................2
- Absence of malpighiaceous trichomes on the leaf blade....................................................................................................................6
2. Presence of bundle sheath extension in the mesophyll ( Fig.3F, G View FIGURE 3 )....................................................................................................3
- Absence of bundle sheath extension in the mesophyll.......................................................................................................................4
3. Plane-convex contour of petiole ( Fig. 2E View FIGURE 2 ); absence of accessory bundles on the petiole; conformation of the vascular system in an open arch on the petiole ( Fig. 2G View FIGURE 2 ); conformation of the vascular system in an open arch with convoluted ends in the midrib ( Fig. 3E View FIGURE 3 ); absence of leaf glands on the petiole ..................................................................................................... Bronwenia acapulcensis View in CoL
- Concave-convex petiole contour ( Fig.2D View FIGURE 2 ); presence of accessory bundles on the petiole ( Fig. 2D, E View FIGURE 2 ); conformation of the vascular system in an open arch with convoluted ends on the petiole ( Fig. 2D, E View FIGURE 2 ); conformation of the vascular system in an open arch in the midrib ( Fig. 3D View FIGURE 3 ); presence of leaf glands on the petiole ( Fig.1A View FIGURE 1 ) ............................................................. Bronwenia megaptera View in CoL
4. Plane-convex contour of petiole ( Fig.2E View FIGURE 2 ); absence of leaf glands on the petiole ............................................ Bronwenia mathiasiae View in CoL
- Concave-convex petiole contour ( Fig.2D View FIGURE 2 ); presence of leaf glands on the petiole ( Fig.1A View FIGURE 1 ).............................................................5
5. Flat surface glands ( Fig.1 View FIGURE 1 C-1D); presence of idioblasts ( Fig.3B, C View FIGURE 3 )............................................................... Bronwenia cineracens
- Concave surface glands ( Fig. 1F View FIGURE 1 ); absence of idioblasts ................................................................................. Bronwenia ferruginea View in CoL
6. Convex surface glands ( Fig. 1B, E View FIGURE 1 ); presence of bundle sheath extension in the mesophyll ( Fig. 3F, G View FIGURE 3 ); absence of dairy products; absence of secretory cavities ............................................................................................................................. Bronwenia cornifolia View in CoL
- Flat surface glands ( Fig.1C, D View FIGURE 1 ); absence of bundle sheath extension in the mesophyll; presence of laticifers ( Fig.3H, I View FIGURE 3 ); presence of secretory cavities ( Fig. 2C View FIGURE 2 ) ........................................................................................................................... Bronwenia wurdackii View in CoL
Multivariate analysis: —From the analysis of similarity with UPGMA ( Fig.5 View FIGURE 5 ) the species of Bronwenia View in CoL were grouped according to the degree of similarity of the anatomical characters analyzed. The highest degree of similarity pointed out in the analysis occurred between the species Bronwenia cineracens and B. ferruginea View in CoL as they share 15 similar characteristics, such as: presence of external leaf glands on the leaf, concave-convex contour, glands with convex surface, presence of prismatic crystals on the leaf and irregular quinternary veins. Another group was formed by B. cineracens , B. ferruginea View in CoL , B. megaptera View in CoL and B. mathiasiae View in CoL that present the same type of conformation of the vascular system of the petiole/ midrib and the presence of accessory bundles in the petiole. The species B. acapulcensis View in CoL and B. wurdackii View in CoL share the presence of external leaf glands among the other species, however, B. acapulcensis View in CoL presents a low degree of similarity, and this fact is explained by the exclusivity in the type of conformation of the petiole/ midrib vascular system main beam and absence of accessory beams. Bronwenia wurdackii View in CoL was the species with the lowest degree of similarity with the other taxa, due to the presence of exclusive characteristics such as the presence of laticifers and secretory structures that visually resemble secretory cavities, but further studies are needed to determine the type of structure.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.