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FIGURE 9 in Morphological and anatomical analyses clarify the species definition of Ceratozamia latifolia Miq. (Zamiaceae) and lead to the description of a new species: Ceratozamia reesii

FIGURE 9. Microsporophylls of (A) C. latifolia and (B) C. reesii. Scale = 1 cm. Photos edited by José García.

FIGURE 13 in Morphological and anatomical analyses clarify the species definition of Ceratozamia latifolia Miq. (Zamiaceae) and lead to the description of a new species: Ceratozamia reesii

FIGURE 13. Linear discriminant analysis on leaflet anatomical traits clearly separates the two taxa, Ceratozamia microstrobila and C. latifolia. (A) The two main axes calculated from the variation of traits A–P separates the two specimens of C. microstrobila (mic) and the two specimens of C. latifolia (lat). (B) When consider two groups (mic and lat), a discriminant axis that summarizes the total variation clearly separates the two species. Traits A–P correspond to those listed in Table 4.

FIGURE 6 in Morphological and anatomical analyses clarify the species definition of Ceratozamia latifolia Miq. (Zamiaceae) and lead to the description of a new species: Ceratozamia reesii

FIGURE 6. Morphological variation among four Ceratozamia species examined in this study: C. latifolia (lat), the putative new species C. reesii (ree), C. chamberlainii (cha), C. fuscoviridis (fus). Traits A–N correspond to those listed in Table 2.

FIGURE 12 in Morphological and anatomical analyses clarify the species definition of Ceratozamia latifolia Miq. (Zamiaceae) and lead to the description of a new species: Ceratozamia reesii

FIGURE 12. Anatomical variation in the species Ceratozamia microstrobila (mic) and C. latifolia (lat). A, Adaxial cuticle thickness; B, Abaxial cuticle thickness; C, TS length of margin hypodermal cell; D, TS width of margin hypodermal cell; E, TS length of large lumen abaxial cell; F, TS width of large lumen abaxial cell; G, Number of perivascular fibers; H, TS length of perivascular fibers; I, TS width of perivascular fibers; J, Number of intravascular fibers; K, TS Length of intravascular fibers; L, TS Width of intravascular fibers; M, Length of palisade cells; N, Width of palisade cells; O, Depth of stomatal pore; P, Width of stomatal pore. TS, Transversal section.

FIGURE 5 in Morphological and anatomical analyses clarify the species definition of Ceratozamia latifolia Miq. (Zamiaceae) and lead to the description of a new species: Ceratozamia reesii

FIGURE 5. Distribution map of species studied in this research. Populations 1–14 correspond to those indicated in Table 1.

FIGURE 16 in Morphological and anatomical analyses clarify the species definition of Ceratozamia latifolia Miq. (Zamiaceae) and lead to the description of a new species: Ceratozamia reesii

FIGURE 16. Ceratozamia reesii sp. nov. Pollen cone (A), seed cone (B), (C) details of the leaflet articulations, (D) prickles in petiole. Scales = 10 cm. Photos A and B edited by José García. Photo D by Diego Báez Ruiz.

FIGURE 15 in Morphological and anatomical analyses clarify the species definition of Ceratozamia latifolia Miq. (Zamiaceae) and lead to the description of a new species: Ceratozamia reesii

FIGURE 15. Ceratozamia reesii sp. nov. in El Cañón, Xilitla, SLP. (A) Adult plant with emerging leaves. Note that emerging leaves are light green, differing with the reddish-brown of the closely related species C. chamberlainii. (B–C) Details of leaflet shape. Photos by Diego Báez Ruiz.

FIGURE 8 in Ceratozamia rosea (Zamiaceae): A new species from the Northern Mountains of Chiapas, Mexico

FIGURE 8. Mature leaves of Ceratozamia rosea. A. Juvenile plant. B. Adult plants. C. Detail of leaflet articulations in adult plants.

FIGURE. 1 in Ceratozamia rosea (Zamiaceae): A new species from the Northern Mountains of Chiapas, Mexico

FIGURE. 1. Distribution of the five Ceratozamia species in the C. miqueliana species complex examined in this study. Localities are based on herbarium specimens deposited in HEM, XAL, and MEXU herbaria, and populations we have surveyed. Abbreviations: C. becerrae (bec), C. miqueliana (miq), the putative new species from Salto de Agua "C. rosea sp. nov." (ros), C. sancheziae (san), and C. zoquorum (zoq). Ceratozamia sancheziae is represented by two localities: Tenejapa (southern locality) and Yajalón (northern locality).

FIGURE 9 in Ceratozamia rosea (Zamiaceae): A new species from the Northern Mountains of Chiapas, Mexico

FIGURE 9. Ceratozamia rosea plants can be found hanging from karst cliffs (A), growing among rocks (B) or in shallow soil (C).

FIGURE 2 in Ceratozamia rosea (Zamiaceae): A new species from the Northern Mountains of Chiapas, Mexico

FIGURE 2. Morphological differences between Ceratozamia sancheziae (san) and the new species C. rosea (ros). A. Emerging leaves. B. Juvenile leaves. C. Adult leaves.

FIGURE 6 in Ceratozamia rosea (Zamiaceae): A new species from the Northern Mountains of Chiapas, Mexico

FIGURE 6. Ceratozamia rosea sp. nov. A. Mature leaf of an adult plant. B. Detail of rachis and leaflet articulations. C. Detail of base of petiole and prickles. D. Mature leaf of juvenile plant.

FIGURE 5. Linear discriminant analysis plot that summarizes the total variation among five Ceratozamia species into two axes. Biplots A–I in Ceratozamia rosea (Zamiaceae): A new species from the Northern Mountains of Chiapas, Mexico

FIGURE 5. Linear discriminant analysis plot that summarizes the total variation among five Ceratozamia species into two axes. Biplots A–I correspond to traits listed in Table 2. Abbreviations: C. becerrae (bec), C. miqueliana (miq), C. rosea (ros), C. sancheziae (san), and C. zoquorum (zoq).

FIGURE 7 in Ceratozamia rosea (Zamiaceae): A new species from the Northern Mountains of Chiapas, Mexico

FIGURE 7. Stages of maturity of an adult leaf. A. Early emergence. B. Mid-emergence. C. Fully emerged leaf, with Mexican pink color beginning to turn green. Photos 7A, and 7B by Rory Antolak (used with permission).

FIGURE 4 in Ceratozamia rosea (Zamiaceae): A new species from the Northern Mountains of Chiapas, Mexico

FIGURE 4. Morphological trait variation among five examined species. Nine traits were evaluated. Letters above bars indicate significant differentiation. Abbreviations: C. becerrae (bec), C. miqueliana (miq), C. rosea (ros), C. sancheziae (san), and C. zoquorum (zoq).

FIGURE 3 in Ceratozamia rosea (Zamiaceae): A new species from the Northern Mountains of Chiapas, Mexico

FIGURE 3. Emerging leaves of Ceratozamia rosea (A–B) revealing the characteristic Mexican pink color.

FIGURE 7 in Critical review of "Monograph of Ceratozamia (Zamiaceae, Cycadales): an endangered genus" published in PhytoKeys 208: 1-102 (2022)

FIGURE 7. Holotype of Ceratozamia dominguezii Pérez-Farr. & Gut.Ortega (M.A. Pérez-Farrera 4013 (HEM!)) (photos by Miguel Angel Pérez-Farrera; used with permission).

FIGURE 4 in Critical review of "Monograph of Ceratozamia (Zamiaceae, Cycadales): an endangered genus" published in PhytoKeys 208: 1-102 (2022)

FIGURE 4. Ceratozamia osbornei in cultivation at Fairchild Tropical Botanic Garden in Coral Gables, FL, USA. A. Large, mature female plant. B. Multi-stemmed, arborescent caudex of large, mature female plant being relocated. C. Large receptive ovulate cone.

FIGURE 2 in Critical review of "Monograph of Ceratozamia (Zamiaceae, Cycadales): an endangered genus" published in PhytoKeys 208: 1-102 (2022)

FIGURE 2. Holotype of Ceratozamia mirandae Vovides, Pérez-Farrera & Iglesias (De La Cruz. R. 66 (CHIP!)) (photo by Miguel Angel Pérez-Farrera; used with permission).

FIGURE 13 in Critical review of "Monograph of Ceratozamia (Zamiaceae, Cycadales): an endangered genus" published in PhytoKeys 208: 1-102 (2022)

FIGURE 13. Ceratozamia hildae plant with nonfasciculate leaflets (photos by Andrew Street; used with permission).