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aa. Spore (18—)20—25(—29) longe, (6—)9—12(—14) y crassz.
Crusta vulgo subconlinua v. rimoso-areolata, cinereo-rufescens v.
fuscidula.
10. Rh. Massalongii (Koerb.) Malme.
BB. Spore 14—16(—17) u longe, 7—8(—9) p crasse. Crusta
verruculoso-areolata, albida.
11. Rh. expallescens Th. Fr.
2. Spore murales v. tetrablastz.
A. Spore mox obscurate (rarius salis diu subhyalinz at tum
in ascis bine v. singule).
a. Spore bine v. singule.
12. Rh. geminatum (Flot.) Koerb.
b. Spore S:ne (raro abortu pauciores).
a. Crusta verrucosa, rarius verrucoso-areolata, verrucis tumidis,
siepe fere hemisphzricis. Apothecia mox v. demum convexa, margine
crassiusculo fere omnino excluso. Thecium superne violaceo- v.
fuligineo-nigricans, KOH plus minusve roseo-violascens.
aa. Crusta KOH non reagens v. leviter fuscescens (hypochlor.
calc. rubescens). Spore (27—)30—35(—40) y long, (12—)14—17
(—20) u crasss, loculis numerosis.
13. Rh. grande (Floerke) Arn.
A8. Crusta KOH sanguineo-rubescens (hypochlor. calc. non re-
agens) Spore (23—)26—30(—33) wu longe, (10—)11—13(—15) u
crass, loculis paucis.
14. Rh. eupetreum (Nyl.) Arn.
A. Crusta disperse areolata, areolis minutis, planiusculis. Apo-
thecia persistenter plana, margine tenuiusculo persistente. The-
cium superne smaragdulo- v. olivaceo-nigricans, KOH haud roseo-
violascens. Spore 27—30(—32) u longe, 12—14(—15) u crasse.
15. Rh. intersitum Arn.
B. Spore etiam mature hyalinz (tantum morbos® obscurascentes ).
a. Crusta oxydata (ferruginea) Thecium superne smaragdulo-
v. olivaceo-nigricans, KOH haud roseo-violascens.
«. Crusta verruculosa, hyphis medullaribus J coerulescentibus.
Apothecia parva, 0,5—0,5 mm lata. Spore tetrablastze, (12—)15— 22
w longs, (6—)8—10 w crassz (loculis non tumidis).
Rh. Oederi (Web.) Koerb.
A. Crusta rimoso-areolata, hyphis medullaribus J haud coerule-
scentibus. Apothecia magna, circiter 1 mm lata v. etiam majora.
Spore murales, vulgo 35—40 u longe, 13—16 u crass.
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