Dictyanthus Decaisne 1844
Creators: name: Alvarado-Cárdenas, Leonardo O.
name: Hernández, Alexis López
name: Crisóstomo, Raúl Sánchez
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Apocynaceae
Dictyanthus

description: A taxonomic key for the determination of species of Dictyanthus in Jalisco.
1. Flowers deeply campanulate and short corolla lobes relative to the tube ........................................................ Dictyanthus tuberosus
- Flowers rotate to rotate-campanulate with corolla lobes of the similar size or larger than the tube..................................................2
2. Corolla tube with pattern of mainly vertical and parallel lines ..........................................................................................................3
- Corolla tube with pattern of reticulated lines .....................................................................................................................................6
3. Lobes of the gynostegial corona widely ovate; stylar head apex flat or concave .............................................. Dictyanthus sepicola
- Lobes of the gynostegial corona rhombuses, linear, spatulate or globular; stylar head apex convex ................................................4
4. Flowers less than 2 cm in diameter; lobes of the gynostegial corona rhomboid; stylar head reddish to purple, apex exserted from the corolla tube ................................................................................................................................................ Dictyanthus nichongus
- Flowers of 3 cm or more in diameter; lobes of the gynostegial corona linear or spatulate; stylar head whitish to pink or brownish, included in corolla tube ......................................................................................................................................................................5
5. Inflorescence of solitary flowers; corolla brownish; lobes of the gynostegial corona reaching the mouth of the corolla tube and with two appendages (teeth) at the middle of its length ................................................................................. Dictyanthus macvaughianus
- Inflorescences with 3 flowers; corolla white; lobes of the gynostegial corona below the the mouth of the corolla tube and without appendages .......................................................................................................................................................... Dictyanthus pavonii
6. Lobes of the gynostegial corona globular .............................................................................................................. Dictyanthus asper
- Lobes of the gynostegial corona linear or spatulate ...........................................................................................................................7
7. Flowers 1 cm in diameter; lobes of the gynostegial corona linear, 1‒1.5 mm long....................................... Dictyanthus parviflorus
- Flowers 2 cm in diameter; lobes of the gynostegial corona spatulate, 5‒8 mm long..................................... Dictyanthus reticulatus
description: Published as part of Alvarado-Cárdenas, Leonardo O., Hernández, Alexis López & Crisóstomo, Raúl Sánchez, 2022, A remarkable new species of Dictyanthus (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobinae) restricted to Jalisco, México, pp. 178-184 in Phytotaxa 558 (2) on page 183, DOI: 10.11646/phytotaxa.558.2.2, http://zenodo.org/record/7002925