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FIGURE 6. Populus luzae. Holotype, M. A in Populus luzae (Salicaceae), a new species of white poplar endemic to the western Transmexican Volcanic Belt, in Zapopan, Jalisco, Mexico

FIGURE 6. Populus luzae. Holotype, M. A. Muñiz-Castro, J. Padilla-Lepe and A. T. Nuño-Rubio 1150 (IBUG).

FIGURE 7. Populus guzmanantlensis. A. Holotype, R. Cuevas and L in Populus luzae (Salicaceae), a new species of white poplar endemic to the western Transmexican Volcanic Belt, in Zapopan, Jalisco, Mexico

FIGURE 7. Populus guzmanantlensis. A. Holotype, R. Cuevas and L. Guzmán 3224 (ZEA). B. An isotype (IBUG). C. A paratype, Cuevas & Guzmán 2930 (IBUG). D. A paratype, Cuevas & Guzmán 2925 (ZEA).

FIGURE 2. Populus luzae. A in Populus luzae (Salicaceae), a new species of white poplar endemic to the western Transmexican Volcanic Belt, in Zapopan, Jalisco, Mexico

FIGURE 2. Populus luzae. A. Bract, floral disk and capsule. B. Capsule with floral disk. C. Twig with developing infrutescence. D. Terminal twig with infrutescense. E. bract with pedicel. F. Seed with arilate coma. G. Developing infrutescence. H. Dehiscing infrutescence. I. Closed and open capsule. J. Close up to open capsule. K. Ovary with styles s and stigmas. L. Variation of leaf shape. A–L. Illustrations by Daniel Barba, from the holotype, except for L (leaves collected from the ground).

FIGURE 4 in Morphological observations on the reproductive structures of Ambrosina (Araceae), a Mediterranean endemic monotypic genus

FIGURE 4 Fruit morphology in Ambrosina bassii (A, C, E) and Arisarum vulgare (B, D, F). A–B) General morphology of the fruit (infructescence in Arisarum); C–D) SEM image of the external fruit surface; E–F) SEM image of the internal fruit surface. Scale bars: 1 cm in A and B, elsewhere as indicated.

FIGURE 2 in Morphological observations on the reproductive structures of Ambrosina (Araceae), a Mediterranean endemic monotypic genus

FIGURE 2. Scatter plot of the first two principal components (PCA) based on seven pollen traits (Table 2) from Ambrosina bassii samples (mean data for the studied populations). Names of the populations as in Table 1.

FIGURE 1 I–P in Morphological observations on the reproductive structures of Ambrosina (Araceae), a Mediterranean endemic monotypic genus

FIGURE 1 I–P. SEM micrographs of pollen grains of Ambrosina bassii (A–N) and Arisarum vulgare (O–P). I–J) A. bassii var. angustifolia (Sicily); K–L) A. bassii var. maculata (Sicily); M–N) A. bassii var. reticulata (Sicily); O–P) A. vulgare from Sicily. Details on populations

FIGURE 1 A–H in Morphological observations on the reproductive structures of Ambrosina (Araceae), a Mediterranean endemic monotypic genus

FIGURE 1 A–H. SEM micrographs of pollen grains of Ambrosina bassii (A–N) and Arisarum vulgare (O–P). A–B) A. bassii from Tunisia; C–D); A. bassii from Sardinia; E–F) A. bassii from Corsica; G–H) A. bassii var. bassii (Sicily).

FIGURE 3 in Morphological observations on the reproductive structures of Ambrosina (Araceae), a Mediterranean endemic monotypic genus

FIGURE 3. Dendrogram obtained from agglomerative cluster analysis using Ward's algorithm of Euclidean distance, based on seven pollen traits (Table 2) from Ambrosina bassii samples (mean data for the studied populations). Names of the populations as in Table 1.

FIGURE 8 in Populus luzae (Salicaceae), a new species of white poplar endemic to the western Transmexican Volcanic Belt, in Zapopan, Jalisco, Mexico

FIGURE 8. Distribution of species of Populus in Jalisco, México. Populus simaroa is added for reference since it is considered morphologically related to P. guzmanantlensis (Dickmann & Kuzovkina 2014).

FIGURE 5 in Morphological observations on the reproductive structures of Ambrosina (Araceae), a Mediterranean endemic monotypic genus

FIGURE 5. Seed morphology in Ambrosina bassii (A, C, E) and Arisarum vulgare (B, D, F). A–B) General view; C–D) SEM image of the testa surface; E–F) SEM image of the strophiole surface.

FIGURE 5. Populus luzae. A in Populus luzae (Salicaceae), a new species of white poplar endemic to the western Transmexican Volcanic Belt, in Zapopan, Jalisco, Mexico

FIGURE 5. Populus luzae. A. Male inflorescence at anthesis, with fully developed anthers. B–C. Male inflorescence after anthesis. D. Abaxial leaf surface. E. Variation of leaf shape and size, and immature infrutescences. F. Stems form a single individual and newly rootborne shoots. G. Dr. Luz María Villarreal de Puga† and M.Sc. Luz María González Villarreal, both from Universidad de Guadalajara, México. Rulers in cm. Photographs A–B by Jesús Padilla-Lepe, C–F by Miguel Muñiz-Castro, G by Luz María González Villareal.

FIGURE 4. Populus luzae. A–B. Ciliated female bracteoles. C–D in Populus luzae (Salicaceae), a new species of white poplar endemic to the western Transmexican Volcanic Belt, in Zapopan, Jalisco, Mexico

FIGURE 4. Populus luzae. A–B. Ciliated female bracteoles. C–D. Capsules and floral disks. Photographs, all from the holotype, by Miguel Muñiz-Castro.

FIGURE 1 in Endemic vascular plants of the Sierra Madre Oriental, Mexico

FIGURE 1. Map of the Physiographic Provinces of México (A), and Sierra Madre Oriental physiographic province (B) of CervantesZamora et al. (1990).

FIGURE 3. Populus luzae. A–D in Populus luzae (Salicaceae), a new species of white poplar endemic to the western Transmexican Volcanic Belt, in Zapopan, Jalisco, Mexico

FIGURE 3. Populus luzae. A–D. Twigs with leaves and female inflorescences, ruler in cm. E. Twig with developing infrutescences. F. Twig with mature infrutescences with dehiscent capsules and cottony seeds getting out. Photographs A–D by Jesús Padilla-Lepe, E–F by Miguel Muñiz-Castro.

FIGURE 3. Portulaca ragonesei. A in Rediscovery of a halophytic endemic and rare species of Portulaca (Portulacaceae) from central Argentina: morphology and its phylogenetic position

FIGURE 3. Portulaca ragonesei. A. Habit; B. Young sprout; C. Flower buds; D. Flower, lateral view; E. Flower, upper view; F. Stigma; G. Pixidia (one fruit complete and the others without the operculum); H. Seed. Drawn by L. Ribulgo.

FIGURE 2 in Rediscovery of a halophytic endemic and rare species of Portulaca (Portulacaceae) from central Argentina: morphology and its phylogenetic position

FIGURE 2. Morphology of Portulaca ragonesei. A. Taproot; B. Leaves; C. Buds; D. Flower, lateral view; E. Flower showing calyx; F. Flower, longitudinal section; G. Flower, upper view; H. Fruit; I. Post-dehiscent fruits. J. Seed.

FIGURE 4 in Rediscovery of a halophytic endemic and rare species of Portulaca (Portulacaceae) from central Argentina: morphology and its phylogenetic position

FIGURE 4. Evolutionary relationships of Portulaca ragonesei. Bayesian allcompat tree from analysis of a combined data matrix of ITS, ndhF, psbD-trnT spacer, and ndhA intron sequences. A black arrow shows the position of P. ragonesei in the phylogeny.

FIGURE 1 in Rediscovery of a halophytic endemic and rare species of Portulaca (Portulacaceae) from central Argentina: morphology and its phylogenetic position

FIGURE 1. Distribution map of Portulaca ragonesei. A. Cuenca Saliniana (Córdoba, Argentina). B. Halophytic bushland in Salina of Ambargasta. C. Habit of P. ragonesei.

FIGURE 4. Morphological differences between Vellozia pyrantha and V. sincorana. A–C in Old for people, new for science: a previously undescribed species of harvested Vellozia (Velloziaceae) endemic to the Chapada Diamantina National Park, Bahia (Brazil)

FIGURE 4. Morphological differences between Vellozia pyrantha and V. sincorana. A–C: Vellozia sincorana. A. Type (Ule 7098). B–C. Rolled leaf-blades (Conceição 4189 and Mello-Silva 781). D. First record of V. pyrantha. E–J: Vellozia sincorana. E. Habit. F. White flower. G. Leaves on the ground. H. Rolled leaf-blades. I. Terete fruit. J. Transversal section of leaf lamina. K–M: V. pyrantha. K. Transversal section of leaf lamina. L. Habit and lilac flowers. M. Ellipsoid fruit truncate at apex, pendent after maturation.

FIGURE 3 in Old for people, new for science: a previously undescribed species of harvested Vellozia (Velloziaceae) endemic to the Chapada Diamantina National Park, Bahia (Brazil)

FIGURE 3. Anatomy of Vellozia pyrantha. A–D. Cross section of leaf blade. E–F. Epidermal cells. A. Stomata in non-fibrous adaxial areas. B. Detail of the leaf showing emergences. C. Stomata restricted to furrows areas of abaxial epidermis, presence of papillae. D. Pericyclic fibres bundles surrounded by a distinct endodermis. E. Adaxial surface. F. Furrows and inner-furrows area showing stomata braquiparacytic in abaxial surface. AP: aquiferous parenchyma. Em: emergence. En: endodermis. Hy: hypodermis. Pa: papillae. PF: pericyclic fibres. Ph: phloem. St: stomata.