PART 1

2. Rhizines present.................................................................................................................................................................................. 3
3. Upper cortex paraplectenchymatous; lower cortex present .......................................................................................................... 4
4. Medulla white (bright red orange in Phaeophyscia rubropulchra), PD-; cortex UV-;
apothecia with thalline margin..................................................................................................................................................... 5
5. Cortex KOH+ yellow .....................................................................................................................................................Physcia
5. Cortex KOH- ......................................................................................................................................................Phaeophyscia
4. Medulla often orangish or yellowish, if white then cortex UV+ yellow
or medulla PD+ orange; apothecia without thalline margin...............................................................................................Pyxine
3. Upper cortex prosoplectenchymatous; lower cortex often lacking............................................................................Heterodermia
2. Rhizines lacking or very sparse and poorly developed ...................................................................................................................... 6
6. Divaricatic acid or sekikaic acid agg. present; underside black; lobes separable from
the substrate; hypothecium brown .......................................................................................................................................Dirinaria
6. No substances present; lobes entirely adnate to the substrate; hypothecium pale.................................................. Hyperphyscia
1. Thallus crustose ...................................................................................................................................................................................... 7
7. Ascospores with irregularly thickened walls ....................................................................................................................................... 8
8. Ascospores small, under 30 µm long; hymenium not inspersed.............................................................................Rinodina s. lat.
8. Ascospores larger, over 30 µm long; hymenium inspersed ................................................................................................ Hafellia
7. Ascospores with uniformly thin walls or somewhat thickened only at
septum (Buellia imshaugiana)............................................................................................................................................................. 9
9. Conidiospores oblong or rod shaped......................................................................................................................................Buellia
9. Conidiospores filiform, curved.........................................................................................................................................Amandinea
BUELLIA De Notaris
including AMANDINEA Scheid. & Mayrh. & HAFELLIA Kalb et al.
1. Thallus not sorediate ............................................................................................................................................................................... 2
2. Thallus PD- or PD+ yellow (norstictic or baeomycesic acid).............................................................................................................. 3
3. Ascospores 8/ascus ........................................................................................................................................................................ 4
4. Ascospores 15 µm or more long and 5 µm or more wide........................................................................................................... 5
5. Apothecial disk naked ............................................................................................................................................................. 6
6. Ascospores 2-celled ............................................................................................................................................................ 7
7. Norstictic acid present; ascospore wall not or weakly ornamented ............................................................................... 8
8. Hymenium without oil droplets or rarely with some oil in upper part.......................................................................... 9
9. Ascospore wall thickened at septum; ascospores
18-22 × 7-8.5(-10) µm; common, throughout Florida................................................ B. imshaugiana R. C. Harris
9. Ascospore wall not thickened at septum; ascospores
16-23 × 6-9 µm; common, south to Polk County..........................................................B. curtisii (Tuck.) Imshaug
8. Hymenium with numerous oil droplets throughout ................................................................................................... 10
10. Ascospores 14-22 × 6-8 µm ................................................................................................................................ 11
11. Hymenium greenish above, KOH+ purplish; common,
throughout Florida ..................................................................................... Hafellia bahiana (Malme) Sheard
11. Hymenium brownish above, KOH-; throughout Florida.................................................. B. curatellae Malme
42