Austroblechnum Gasper & V. A. O. Dittrich
Creators: name: Murillo-A, José
name: Triana-Moreno, Luz A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Polypodiales
Blechnaceae
Austroblechnum

description: Key to the Colombian species of Austroblechnum
1. Rachises abaxially covered with hairs...............................................................................................................................................2.
- Rachises glabrous or covered with scales .........................................................................................................................................3.
2. Rhizome scales with filiform apex; pinnae smooth abaxially................................................................................... A. aequatoriense
- Rhizome scales with acuminate apex; pinnae bullate abaxially........................................................................................ A. bullatum
3. Sterile laminae 33–82 × 9–32 cm, more than 22 pinnae pairs ..........................................................................................................4.
- Sterile laminae 11–34 × 2–9.5 cm, less than 15 pinnae pairs............................................................................................................5.
4. Fertile laminae 22–44 cm long; 22–28 pinnae pairs ........................................................................................................ A. divergens
- Fertile laminae 55–78 cm long; 25–46 pinnae pairs .......................................................................................................... A. wardiae
5. Fertile leaves petioles 3–10 cm long .................................................................................................................................................6.
- Fertile leaves petioles 14–24 cm long ...............................................................................................................................................7.
6. Laminae with 1–2 pairs of reduced pinnae; rhizome scales 3.5–4 mm long ................................................................ B. lherminieri
- Laminae without reduced pinnae, rhizome scales less than 3 mm long.......................................................................... A. ascendens
7. Sterile laminae 6.5–9 cm wide, base with 1–3 pairs of reduced pinna ........................................................................... A. organense
- Sterile laminae less than 6 cm wide, base with 3–12 pairs of reduced pinnae..................................................................................8.
8. Sterile laminae 3–6 cm wide, 3–8 pairs of auriculiform pinnae...................................................................................... A. lehmannii
- Sterile laminae less than 2.5 cm wide, 8–12 pairs of auriculiform pinnae.................................................................. A. pinnatifidum
description: Published as part of Murillo-A, José & Triana-Moreno, Luz A., 2022, Novelties in Austroblechnum (Blechnaceae) from Colombia, pp. 268-274 in Phytotaxa 572 (3) on page 273, DOI: 10.11646/phytotaxa.572.3.5, http://zenodo.org/record/7322220