Ascogrammitis

Smith, Alan R., Kessler, Michael, León, Blanca, Almeida, Thaís Elias, Jiménez-Pérez, Iván & Lehnert, Marcus, 2018, Prodromus of a fern flora for Bolivia. XL. Polypodiaceae, Phytotaxa 354 (1), pp. 448-450 : 448-450

Key to the Bolivian species of Ascogrammitis

1 Blades 1-pinnate-pinnatifid or pinna margins strongly crenate ................................................................................... A. athyrioides

– Blades pinnatisect to 1-pinnate, pinna margins entire ...................................................................................................................... 2

2 Plants with proliferous roots, these appearing stoloniferous; rhizome scales 0.5–1.2 mm long, with margins usually lacking setae, sometimes bearing a few setae; blades mostly 1.0– 1.5 cm wide .............................................................................. A. anfractuosa

– Plants lacking proliferous roots; rhizome scales 1.5–4.5 mm long, the margins decidedly setose; blades mostly 1.5 cm wide or wider ................................................................................................................................................................................................. 3

3 Petioles densely setose, setae 1.5–2.0 mm long; rhizome scales blackish, partially clathrate, most lumina occluded; blades 1.5–2.5 cm wide; pinna margins lacking trichomidia, but apices often bearing one or two reddish setae 1.0 mm long ................... A. nana

– Petioles sparsely setose, setae 1.0– 1.5 mm long; rhizome scales reddish to blackish, clathrate, most lumina not occluded; blades (2.0–) 2.5–7.5 cm wide; pinna margins bearing minute trichomidia ca. 0.1 mm long, apices non-setose ....................................... 4

4 Blades 6.5–7.5 cm wide; rhizome scales 4.5 mm long, the lumina clear; petioles non-alate; abaxial blade surfaces densely setose, sterile and fertile portions equally setose ....................................................................................................................... A. clathrata

– Blades to 5.0 cm wide; rhizome scales to 3.5 mm long, the lumina clear or smoky-yellow; petioles narrowly alate, at least distally; abaxial blade surfaces glabrous to densely setose, fertile portions more densely setose than sterile portions ................................ 5

5 Setae of abaxial rachises 1.0 mm long; pinna bases not or only slightly expanded, basal pinnae distinct; fertile portions of blades abaxially densely setose, setae evenly distributed ................................................................................................... A. david-smithii

– Setae of abaxial rachises 0.5 mm long; pinna bases decidedly expanded, basal pinnae connected by broad sinuses; fertile portions of blades abaxially nearly glabrous to densely setose, setae generally confined to sori and veins serving sori ............... A. dilatata