Frullania subg. Diastaloba

Schäfer-Verwimp, Alfons, Peralta, Denilson F. & Da Costa Siqueira, Samylia M., 2012, Frullania curvilobula (Frullaniaceae, Marchantiophyta), a new species from Brazil, Phytotaxa 57 (1), pp. 27-30 : 31

Key to the species of Frullania subg. Diastaloba from Brazil

This is an updated version of the key in Gradstein & Costa (2003). Frullania lindenbergii is excluded based on the evidence given above. In addition, Frullania subtilissima (Nees ex Montagne 1840: 333) Lindenberg in Gottsche et al. (1845: 443) recorded from Brazil by Spruce (1884) as a member of F. subg. Diastaloba , is excluded as this species seems to be a member of F. subgen. Thyopsiella ( Gradstein & Hekking 1989). It should be noted, however, that Hattori (1982) lectotypified F. subg. Diastaloba with F. subtilissima . However, Schuster (1992) considered F. exilis Taylor (1846: 405) , widely regarded as a synonym of F. apiculata ( Reinwardt et al. 1824: 222) Dumortier (1835: 13) , as the type of subg. Diastaloba . This matter needs further study.

1a. Leaves with ocelli ( Brazil) .................................................................................................................. Frullania vitalii

1b. Leaves without ocelli ................................................................................................................................................... 2

2a. Leaf apex broadly rounded, plants robust, closely appressed to substrate (neotropical, common)................................ ...................................................................................................................................................... Frullania caulisequa

2b. Leaf apex at least in part apiculate or (sub-)acute ...................................................................................................... 3

3a. Female bracts strongly toothed to laciniate (pantropical) .................................................................. Frullania serrata

3b. Female bracts entire to moderately denticulate .......................................................................................................... 4

4a. Plants small, 1 mm wide, 2–4(–5) cm long, closely appressed to substrate (pantropical) .............. Frullania apiculata

4b. Plants large, up to 1.8 mm wide and 6–8(–10) cm long, loosely adhered to substrate ................................................ 5

5a. Lobules straight, 200–300 µm long, 80–100 µm wide (length-width ratio 2.7–3.0:1) ............... Frullania grossifolia

5b. Lobules curved, 350–450 µm long, 50–80 µm wide (length-width ratio 5.5–7.0:1) .................. Frullania curvilobula