Austroblechnum wardiae (Mickel & Beitel) Gasper & V.A.O.Dittrich
Descripción
Rhizomes erect, trunk-like, to 30 cm tall; rhizome scales concolorous, brown, lanceolate, 10–20 X 2–4 mm, margins entire; fronds strongly dimorphic, clumped; stipes 1–4 cm X 2–4 mm, atropurpureous, papillate; sterile blades 40–80 X 12–15 cm, pinnatifid, gradually reduced at bases to semicircular lobes, proximal pinnae contiguous, blade apices tapering gradually; rachises papillate, lacking aerophores at pinna bases; sterile pinnae adnate, slightly falcate, 6–8 cm X 12–15 mm, medial pinnae acute, proximal pinnae and lobes rounded, margins entire, glabrous on both sides; veins simple or 1-forked, vein endings enlarged and conspicuous on adaxial surfaces; fertile pinnae 5–10 cm X 1–1.5 mm; indusia 0.5 mm wide, entire.A
Forma de vida
TerrestreA
Ejemplar revisado
(Related to the synonym Blechnum wardiae) Chis (Breedlove 32391, DS, MEXU, 49315, CAS, ENCB, NY). Oax (Hallberg 1542, NY, UC; Mickel 4262, ENCB, MEXU, NY, UC, US, 5578, ENCB, 6749, ENCB, NY, UC). Pue (Lyonnet 550500004, MEXU). Ver (Bohs et al. 1698, XAL; Riba 518, XAL; Ventura A. 7418, ENCB, MEXU, NY).A
Elevación
(800 –)1500 – 2300 mA
Tipo de vegetación
Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym Blechnum wardiae) This species is distinct by the combination of relatively large size (sterile fronds 12–15 cm wide, pinnae 6–8 cm long, blades 40–80 cm long), gradual reduction of the proximal pinnae to semicircular lobes that run down nearly to the rhizomes, and relatively large rhizome scales 10–20 mm long. Blechnum wardiae resembles most closely B. divergens and B. lehmannii. Mickel and Beitel (1988) postulated that it was intermediate between B. divergens and B. stoloniferum, and possibly of allopolyploid origin between these two species, but B. stoloniferum is a much smaller species and seems less intimately related, so this hypothesis seems unlikely. Breedlove 32391 from Chiapas was previously cited as B. divergens by Smith (1981).A