Tectaria

Kessler, Michael & Smith, Alan R., 2018, Prodromus of a fern flora for Bolivia. XXXVIII. Tectariaceae, Phytotaxa 334 (3), pp. 248-254 : 250

Key to the Bolivian species of Tectaria

1 Proximal pinnae and pinnules pinnatifid, with up to 10 apically acute segments on both sides ...................................................... 2

– Proximal pinnae entire, undulate, or with one (rarely 2 or 3) basiscopic lobes ............................................................................... 3

2 Proximal pinna pair to ca. 30 × 10 cm, excluding enlarged basal basiscopic segments; lowest lateral pinnae incised ca. 1/4 or less to the costae, with basiscopic lobe (pinnule) to 15 × 3 cm, entire or incised to ca. 1/2 its width; largest pinna lobes entire or incised to ca. 1/2 their width ................................................................................................................................................... T. lizarzaburui

– Proximal pinna pair to ca. 50 × 30 cm; lowest lateral pinnae incised nearly to the costae, with basiscopic lobe (pinnule) to 25+ × 10 cm, incised to ca. 4/5 its width or to the costa and then strongly decurrent; largest pinnules or pinna lobes incised to ca. 4/5 their width ............................................................................................................................................................................. T. pascoensis

3 Sori in (2)3–6 rows between the main lateral veins (costules) ......................................................................................................... 4

– Sori in 2 rows between the costules ................................................................................................................................................. 5

4 Mature sori <1 mm in diameter, often less than ca. 0.8 mm wide, indusia ca. 0.5 mm wide; costae abaxially with dense hairs ca. 0.05–0.1 mm long ..................................................................................................................................................... T. antioquoiana

– Mature sori 1.2–2 mm in diameter, indusia ca. 1.5–2 mm wide at the widest point; costae abaxially glabrous or with sparse hairs ca. 0.1 mm long .............................................................................................................................................................. T. poeppigii

5 Blade surfaces adaxially and abaxially with long hairs> 1 mm ........................................................................................... T. pilosa

– Blade surfaces glabrous or with very short hairs ca. 0.1–0.2 mm long ............................................................................................ 6

6 Apical pinnae not decurrent, or not strongly so; costae and costules abaxially glabrous or sparsely hairy, hairs if present ca. 0.1 mm long ....................................................................................................................................................................................... T. incisa

– Apical pinnae long-decurrent; costae and costules abaxially moderately pubescent, hairs to 0.5 m long ...................... T. jimenezii