taxonID	type	description	language	source
D873FD1C3E205FCD89BCFD3D0D4B9EFA.taxon	description	Fig. 2	en	Ossowska, Emilia Anna, Moncada, Bibiana, Lücking, Robert, Sérusiaux, Emmanuel, Magain, Nicolas (2025): Sticta flakusiorum and S. kukwae — two additional new species from the Neotropics (Peltigerales, Peltigeraceae). MycoKeys 114: 259-276, DOI: 10.3897/mycokeys.114.139681
D873FD1C3E205FCD89BCFD3D0D4B9EFA.taxon	diagnosis	Diagnosis. Differing from S. humboldtii in the absence of true cilia, the presence of submarginal apothecia with entire to crenate margins, completely to partly covered by white hairs, spongy to fasciculate primary tomentum, and scabrid basal membrane of cyphellae, white to yellow (then K + purple), or partly brown.	en	Ossowska, Emilia Anna, Moncada, Bibiana, Lücking, Robert, Sérusiaux, Emmanuel, Magain, Nicolas (2025): Sticta flakusiorum and S. kukwae — two additional new species from the Neotropics (Peltigerales, Peltigeraceae). MycoKeys 114: 259-276, DOI: 10.3897/mycokeys.114.139681
D873FD1C3E205FCD89BCFD3D0D4B9EFA.taxon	description	Description. Stipe absent. Thallus orbicular, up to 5 cm diam., moderately branched, with 3 – 5 branches per 5 cm radius, branching pleurotomous to polytomous; lobes suborbicular to flabellate, interspaced to adjacent, involute, with their apices rounded, revolute, and undulate and their margins sinuous, slightly thickened; lobe internodes 2 – 20 mm long, 3 – 15 mm broad; thallus coriaceous. Upper surface pitted to rugose, yellowish brown to chocolate brown, darker near the apices in the herbarium, shiny; lobes entirely hirsute or rarely with some parts lacking tomentum, covered by white hairs, without papillae and maculae; true cilia absent, but lower tomentum partly projecting beyond the margins and resembling cilia, fasciculated to agglutinated, white to pale brown, up to 0.5 mm. Apothecia submarginal and laminal, subaggregated, sessile to shortly stipitate, with pronounced invagination on the lower side, up to 2.0 mm diam.; disc brown to chestnut-brown; margin entire to crenate, completely to partly covered by white hairs, up to 1 mm long, simple to agglutinated, margin brown to dark brown. Vegetative propagules absent. Lower surface ribbed, brown; primary tomentum dense and usually thick to sparse to the margin, spongy to fasciculate, soft, white to brown; secondary tomentum present, arachnoid. Rhizines absent. Cyphellae 1 – 20 per cm 2 towards the thallus center and 41 – 60 per cm 2 towards the margin, scattered, elongate to irregular, urceolate with wide pore to cupuliform, erumpent to sessile, remaining below the level of the primary tomentum, with the margin raised and involute to erect, cream to brown colored, with tomentum up to the pore; pore up to 1.5 mm diam.; basal membrane scabrid, white to yellow, or partly brown, when yellow K + purple and C + red-orange, KC –, P –. Medulla compact, white to yellow, or partly brown, when yellow K + purple and C + red-orange, KC –, P –. No substances detected by TLC. Upper cortex paraplectenchymatous, up to 35 μm thick, uniform, up of 5 layers of cells, their walls up to 1.5 μm thick and their lumina rounded to isodiametric, up to 5 – 15 × 5 – 10 μm diam. Photobiont layer up to 150 μm thick, its cells up to 10 μm diam. Medulla up to 120 μm thick, its hyphae up to 5.0 μm broad. Lower cortex paraplectenchymatous, up to 50 μm thick, with up to 7 cell layers; cells up to 10 μm diam. Upper primary tomentum up to 100 μm long, simple or in fascicles formed of up to 7 hyphae, hyphae simple. Upper secondary tomentum not seen on upper surface. Lower primary tomentum up to 200 μm long, composed of fascicles formed of 10 – 15 hyphae, hyphae mostly simple, apically free, and flexuous. Lower secondary tomentum 30 μm long, of single, simple to branched hairs, moniliform. Cyphellae cavity up to 220 μm deep; cells of basal membrane without or rarely with up to 2 papillae. Apothecia biatorine, up to 500 μm high, with indistinct stipe, about 20 μm high; excipulum up to 400 μm broad, with projecting hairs, up to 1 µm long. Hymenium up to 300 μm high; epihymenium up to 5 μm high, orange-brown, pigment present in the gel and in the walls upper cells of paraphyses, with very gelatinous upper layer. Asci 4 – 8 - spored, ascospores fusiform, 1 – 3 - septate, 25 – 35 × 6 – 8 μm.	en	Ossowska, Emilia Anna, Moncada, Bibiana, Lücking, Robert, Sérusiaux, Emmanuel, Magain, Nicolas (2025): Sticta flakusiorum and S. kukwae — two additional new species from the Neotropics (Peltigerales, Peltigeraceae). MycoKeys 114: 259-276, DOI: 10.3897/mycokeys.114.139681
D873FD1C3E205FCD89BCFD3D0D4B9EFA.taxon	etymology	Etymology. The species is named in honor of two lichenologists, Adam Flakus and Pamela Rodriguez-Flakus, for their contributions to the taxonomy of lichens and lichenicolous fungi of Bolivia.	en	Ossowska, Emilia Anna, Moncada, Bibiana, Lücking, Robert, Sérusiaux, Emmanuel, Magain, Nicolas (2025): Sticta flakusiorum and S. kukwae — two additional new species from the Neotropics (Peltigerales, Peltigeraceae). MycoKeys 114: 259-276, DOI: 10.3897/mycokeys.114.139681
1359B908F392529F9EAE6F44A12EC33B.taxon	description	Fig. 3	en	Ossowska, Emilia Anna, Moncada, Bibiana, Lücking, Robert, Sérusiaux, Emmanuel, Magain, Nicolas (2025): Sticta flakusiorum and S. kukwae — two additional new species from the Neotropics (Peltigerales, Peltigeraceae). MycoKeys 114: 259-276, DOI: 10.3897/mycokeys.114.139681
1359B908F392529F9EAE6F44A12EC33B.taxon	diagnosis	Diagnosis. Differing from S. weigelii in lobes with sinuous margins, in the presence of marginal phyllidia, and the scarce, submarginal apothecia, as well as the primary tomentum being light brown to brown, dense, and sparse towards the margins.	en	Ossowska, Emilia Anna, Moncada, Bibiana, Lücking, Robert, Sérusiaux, Emmanuel, Magain, Nicolas (2025): Sticta flakusiorum and S. kukwae — two additional new species from the Neotropics (Peltigerales, Peltigeraceae). MycoKeys 114: 259-276, DOI: 10.3897/mycokeys.114.139681
1359B908F392529F9EAE6F44A12EC33B.taxon	description	Description. Stipe absent. Thallus suborbicular to irregular, up to 10 cm diam., moderately branched, with 3 – 5 branches per 5 cm radius, branching anisotomous to polytomous; lobes ligulate to flabellate, undulate, with their apices rounded, revolute, and their margins sinuous, not thickened; lobe internodes 5 – 9 mm long, 4 – 9 mm broad; thallus coriaceous. Upper surface smooth to shallowly pitted, yellowish brown to brown when dry, shiny; surface glabrous, few lobes with papillae but without maculae; true cilia absent. Only two apothecia found, submarginal, with slightly pronounced invagination on lower side, up to 1.5 mm diam.; disc brown; margin smooth, brown to dark brown. Phyllidia present, marginal and laminal, simple, branched, palmate to corymbose, vertical to obliquely arranged, globular at first, then spatulate to squamiform, usually darker than the thallus. Lower surface uneven, light brown; primary tomentum dense and thick to the margin, sometimes absent at the very edge, fasciculate to spongy, soft, white to brown, sometimes brown with brighter apices; secondary tomentum present, arachnoid. Rhizines present, only on few lobes, whitish to brown, simple to branched, densely distributed. Cyphellae 1 – 20 per cm 2 towards the thallus center and 1 – 20 per cm 2 towards the margin, dispersed, rounded to irregular, urceolate with wide pore, erumpent to sessile, remaining below the level of the primary tomentum, with the margin elevated and involute, white to beige colored, with tomentum; pore up to 0.5 mm diam.; basal membrane scabrid, white, K + yellowish, C –, KC –, P –. Medulla compact, white, K –, C –, KC –, P –. No substances detected by TLC. Upper cortex paraplectenchymatous, up to 65 μm thick, uniform, consisting of up to 7 cell layers with cells 5 – 10 μm diam., their walls up to 1.5 μm thick. Photobiont layer up to 130 μm thick, its cells up to 15 μm diam. Medulla up to 120 μm thick, its hyphae 4 μm broad, without crystals. Lower cortex paraplectenchymatous, up to 60 thick, with 7 cell layers; cells up to 10 μm diam., their walls up to 2.5 μm thick. Lower primary tomentum up to 400 μm long, with cells resembling secondary tomentum and probably representing thalloconidia, simple or in fascicles formed of up to 20 hyphae, hyphae simple. Lower secondary tomentum 70 mm long, simple to branched, moniliform. Cyphellae cavity up to 150 μm deep; cells of basal membrane without or with single papillae. Apothecia lecanorine (with algal layer below cortex), up to 250 μm high, without distinct stipe; excipulum 150 μm broad, without projecting hairs. Hymenium up to 75 μm high; epihymenium 5 μm high, orange-brown with gelatinous upper layer. Asci immature. Ascospores not observed.	en	Ossowska, Emilia Anna, Moncada, Bibiana, Lücking, Robert, Sérusiaux, Emmanuel, Magain, Nicolas (2025): Sticta flakusiorum and S. kukwae — two additional new species from the Neotropics (Peltigerales, Peltigeraceae). MycoKeys 114: 259-276, DOI: 10.3897/mycokeys.114.139681
1359B908F392529F9EAE6F44A12EC33B.taxon	etymology	Etymology. Named in honor of the lichenologist Martin Kukwa for his contribution to the taxonomy of lichens and lichenicolous fungi in Bolivia.	en	Ossowska, Emilia Anna, Moncada, Bibiana, Lücking, Robert, Sérusiaux, Emmanuel, Magain, Nicolas (2025): Sticta flakusiorum and S. kukwae — two additional new species from the Neotropics (Peltigerales, Peltigeraceae). MycoKeys 114: 259-276, DOI: 10.3897/mycokeys.114.139681
