Magnolia (sect. Talauma) section Talauma
Creators: name: Vázquez-García, J. Antonio
name: Padilla-Lepe, Jesús
name: Gallardo-Yobal, Sergio
name: Rodríguez-Pérez, Ciro
name: García-Escobar, Alan
name: Muñiz-Castro, Miguel Á.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Magnoliales
Magnoliaceae
Magnolia
Magnolia section

description: Key to Mexican species of Magnolia section Talauma
1 Flower buds 2.5–4.5 cm long ........................................................................................................................................................... 2
– Flower buds 5.0–12.0 cm long ......................................................................................................................................................... 3
2 Carpels 8–9; mature leaf petioles 5.2–7.2 cm; Chimalapas, Oaxaca ...................................................................... M. chimalapana
– Carpels 19–28: mature leaf petioles 2.5–4.0 cm; Uxpanapa, Veracruz ............................................................................. M. wendtii
3 Abaxial portions of carpels detaching from the fruit axis mainly in large irregular masses of many carpels (> 15) ...................... 4
– Abaxial portions of carpels detaching from the fruit axis usually singly or occasionally in groups of few carpels (<8) ................ 5
4 Fruit ellipsoid-subglobose, 10.4–14.8 × 7.9–9.2 cm, carpels 89–92, Selva Zoque, Chiapas .................................. M. perezfarrerae
– Fruit spheroidal, 6 cm in diam., carpels 36–42, Selva Chimalapas, Oaxaca ................................................................ M. heribertoi
5 Leaves lanceolate to broadly lanceolate ........................................................................................................................................... 6
– Leaves elliptical to obovate .............................................................................................................................................................. 7
6 Carpels 20–28, 1.8–3.75 × 1.7–2.1 cm, carpel lateral walls curved outwards and wing-like, Los Tuxtlas ........................................ ....................................................................................................................................................................... Magnolia sinacacolinii
– Carpels 30–35, 3.4–5.0 × 1.7–2.1 cm, carpel side walls not curved outwards, Los Tuxtlas ..................... Magnolia lopezobradorii
7 Leaves obovate ................................................................................................................................................................................. 8
– Leaves elliptical ................................................................................................................................................................................ 9
8 Carpels 57–59, Uxpanapa-Las Choapas, Veracruz .................................................................................................... M. uxpanapana
– Carpels 30-40, San Pedro Ixcatlán, Oaxaca ................................................................................................................... M. decastroi
9 Petals adaxially with purple stains ................................................................................................................................................. 10
– Petals adaxially white ..................................................................................................................................................................... 11
10 Fruit ovoid to oblongoid, N Puebla, NW Oaxaca and central Veracruz ........................................................................ M. mexicana
– Fruit subglobose; Santa Martha volcano, Veracruz ............................................................................................ M. zoquepopolucae
11 Fruits ovoid to obovoid or ellipsoid ............................................................................................................................................... 12
– Fruits globose to subglobose or broadly ovoid ............................................................................................................................... 14
12 Flowers 20 to 22 cm in diam., fruits ellipsoid, basal carpels decurrent 0.4 to 0.6 cm; Sierra de Manantlán, Jalisco and Colima ..... ......................................................................................................................................................................................... M. jaliscana
– Flowers 13 to 17 cm in diam.; fruit pear-shaped to ovoid; basal carpels decurrent to 1.0–2.0 cm; outside Sierra de Manantlán, Jalisco and Colima .......................................................................................................................................................................... 13
13 Leaves 35–45 × 23–29 cm, flower 13–14 cm in diam., carpel apex cleft (1/3–1/2); only recorded from Talpa de Allende, Jalisco. ............................................................................................................................................................................................ M. ofeliae
– Leaves 18–38 × 8–23 cm; flower 16-17 cm in diam.; carpel cleft apically (2/3–3/3), S Oaxaca ............................. M. macrocarpa
14 Carpels 61–70, indistinctly marked; seeds scarlet; Lacandona, Chiapas .................................................................. M. lacandonica
– Carpels 36–41, conspicuously marked; seeds orange to pale red; N Oaxaca ............................................................... M. yajlachhi
description: Published as part of Vázquez-García, J. Antonio, Padilla-Lepe, Jesús, Gallardo-Yobal, Sergio, Rodríguez-Pérez, Ciro, García-Escobar, Alan & Muñiz-Castro, Miguel Á., 2024, Three new Mesoamerican species of Magnolia (M. sect. Talauma, Magnoliaceae) from the Chimalapas-Uxpanapa region, Mexico, pp. 10-32 in Phytotaxa 652 (1) on page 30, DOI: 10.11646/phytotaxa.652.1.2, http://zenodo.org/record/13216465