Prodromus of a fern flora of Bolivia. XLII. Update I. Author Kessler, Michael Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, CH- 8008 Zurich, Switzerland. Author Smith, Alan R. University Herbarium, 1001 Valley Life Sciences Bldg. # 2465, University of California, Berkeley, CA 94720 - 2465. Author Øllgaard, Benjamin Department of Biology - Ecoinformatics and Biodiversity, Ny Munkegade 116, building 1137, 8000 Aarhus C, Denmark. Author Matos, Fernando B. Centro de Referência em Informação Ambiental (CRIA), Rua João Carlos do Amaral 500, 13070 - 111, Campinas, SP, Brasil. Author Moran, Robbin C. New York Botanical Garden, 2900 Southern Blvd., Bronx, New York, 10458 - 5126, USA. text Phytotaxa 2023 2023-12-20 630 3 183 210 https://phytotaxa.mapress.com/pt/article/download/phytotaxa.630.3.2/51376 journal article 10.11646/phytotaxa.630.3.2 1179-3163 10409920 Serpocaulon subandinum (Sodiro) A.R.Sm. , Taxon 55(4): 929. 2006 . = Polypodium subandinum Sodiro, Crypt. Vasc. Quit. 348. 1893. Range:— Colombia and Venezuela to Bolivia (CO, LP, SC). Ecology:— Uncommon epiphytic in montane forests and cloud forests at 2400–2900 m ( 1450–4150 m outside Bolivia ). Notes:— In Bolivia , Serpocaulon subandinum can be confused with S. eleutherophlebium (Fée) A.R.Sm. , S. funckii , and S. ptilorhizon (Christ)A.R.Sm. , which also have long-creeping, relatively narrow rhizomes with pinnatisect laminae; additionally, the size and shape of their laminae is very similar. However, S. subandinum differs from all of these species by its laminae densely pubescent with septate hairs (vs. glabrous or with sparse hairs or scales). Kessler 9135 was previously determined as S. ptilorhizon by M. Sundue. Sanín et al . (2023) listed the following specimens for Bolivia : Cochabamba : José Carrasco Torrico , 108 m , antigua carretera Cochabamba-Villa Tunari , 2950 m , 17°9’ S , 65°38’ W , 23 June 1996 , Kessler 6615 ( LPB ) ; Carrasco , 3 km de Siberia hacia Karahuasa , 17°,48’S , 6°41’ W , Kessler 9135 ( NY *) ; La Paz : Prov. Murillo , Zongo Valley road between Cuticucho and Santa Rosa , 16 °08’00”S , 66 06’40” W , Fay & Fay 2925 ( US *) ; Valle del río Zongo , 24 km al N de la cumbre, 16°8’ S , 68°7’ W , 18 Mar 1987 , Solomon 16380 ( F , MO ) ; Santa Cruz : Caballero Comarapa , Serranía Siberia , entre Torrecillas e Pojo , 36 km de Torrecillas , 2800 m , 17°49’43” S , 64°43’5” W , 14 Dec 2002 , Labiak 2870 ( MO , RB ) .