Ceratozamia Brongniart 1846
Creators: name: Vovides, Andrew P.
name: Pérez-Farrera, Miguel Angel
name: Salinasrodríguez, María Magdalena
name: Galicia, Sonia
name: Díaz-Jiménez, Pedro
name: Calonje, Michael
name: Gutiérrez-Ortega, José Said
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Cycadopsida
Cycadales
Zamiaceae
Ceratozamia

description: Key to the species of the C. latifolia species complex
1a. Plants with whorled (fasciculate) leaflets.............................................................................................................................. C. hildae
1b Plants with non-whorled leaflets.
2a. Slender, linear, lanceolate leaflets up to 1.5 cm wide.
3a. Spiral rachis ..................................................................................................................................................................... C. zaragozae
3b Non-spiral rachis.
4a. Ribbed leaflets, unarmed petiole. ................................................................................................................................. C. kuesteriana
4b. Flat leaflets, not ribbed, petiole with spines ........................................................................................................................ C. sabatoi
2b. Broad leaflets, more than 1.5 cm wide.
5a. Light green or yellowish-green emerging leaves.
6a. Light green emerging leaves.
7a. Oblong leaflets .............................................................................................................................................................. C. morettii
7b. Oblanceolate leaflets.
8a. Pinnate plants with brown female cone at maturity .......................................................................................................... C. reesii
8b. Pinnate plants with olive-green female cone at maturity...................................................................................... C. huastecorum
6b. Yellowish-green emerging leaves.
9a. Papyraceous leaflets.................................................................................................................................................... C. delucana
9b. Coriaceous leaflets ..................................................................................................................................................... C. brevifrons
5b. Brown or reddish emerging leaves.
10a. Papyraceous leaflets.
11a. Unarmed petiole, rarely armed with small, short and slender spines......................................................................... C. latifolia
11b. Armed petiole thick and long spines.
12a. Leaflets 1.3–2.1 cm wide ..................................................................................................................................... C. fuscoviridis
12b. Leaflets 2.7–4.2 cm wide.................................................................................................................................... C. totonacorum
10b. Coriaceous leaflets................................................................................................................................................. C. chamberlainii
description: Published as part of Vovides, Andrew P., Pérez-Farrera, Miguel Angel, Salinasrodríguez, María Magdalena, Galicia, Sonia, Díaz-Jiménez, Pedro, Calonje, Michael & Gutiérrez-Ortega, José Said, 2022, Morphological and anatomical analyses clarify the species definition of Ceratozamia latifolia Miq. (Zamiaceae) and lead to the description of a new species: Ceratozamia reesii, pp. 224-252 in Phytotaxa 575 (3) on page 242, DOI: 10.11646/phytotaxa.575.3.2, http://zenodo.org/record/7431194