FIGURE 1. A–C in Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)

FIGURE 1. A–C. Pteridium arachnoideum subsp. campestre: A. pinnule (Nonato 927), B. segment, abaxially (Schwartsburd 2411), C. segment, cross section, abaxial side up, showing veins abaxially with stiff acicular hairs, and laminar tissue between the veins abaxially with gnarled hairs (Schwartsburd 2411), D–F. Pteridium arachnoideum subsp. arachnoideum s. str.: D. pinnule (Schwartsburd 2490), E. segment, abaxially (Schwartsburd 2490), F. segment, cross section, abaxial side up, showing veins abaxially with lax arachnoid hairs, and laminar tissue between the veins abaxially glabrous (Schwartsburd 2490). "s.d.s.": simple distal segments, "c.d.s.": compound distal segments. Drawn by R. Pinto.Published as part of Schwartsburd, Pedro B., De Moraes, Pedro L. R. & Lopes-Mattos, Karina L. B., 2014, Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida), pp. 103-117 in Phytotaxa 170 (2) on page 105, DOI: 10.11646/phytotaxa.170.2.3, http://zenodo.org/record/513898