Abstract
Actinostachys simplex Amoroso & Coritico (Schizaeaceae), from Mindanao, Philippines is herein described as a new species. The species is unique from all other species of Actinostachys (grass ferns) by its distinct and longer stipe and consistent single and longer sorophore with glabrous sporangia. An identification key to the species of Philippine Actinostachys is provided.
References
Amoroso, V.B., Acma, F.M., Coritico, F.P., Gorme, F.S., Lagunday, N.E., Salolog, M.C.S. & Colong, R.D. (2018) Floral diversity assessment of the buffer zones and vicinity of the Mt. Hamiguitan Range Wildlife Sanctuary (MHRWS), Davao Oriental: Basis for inclusion to protected area zone. Philippine Journal of Systematic Biology 12 (2): 36–51. https://doi.org/10.26757/pjsb.2018b12004
Amoroso, V.B., Coritico, F.P. & Fritsch, P.W. (2020) Actinostachys minuta, a new species of grass fern from Mindanao, Philippines. PhytoKeys 151: 59–66. https://doi.org/10.3897/phytokeys.151.53100
Christenhusz, M.J.M., Zhang, X.C. & Schneider, H. (2011) A linear sequence of extant families and genera of lycophytes and ferns. Phytotaxa 19: 7–51. https://doi.org/10.11646/phytotaxa.19.1.2
Holttum, R.E. (1955) A Revised Flora of Malaya (edition 1, vol. 2). In: Ferns of Malaya, vol. 52. Government Printing Office, Singapore, 653 pp.
IUCN Standards and Petitions Committee (2019) Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Committee. Available from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 15 February 2021)
Kramer, K.U. (1990) Schizaeaceae. In: The Families and Genera of Vascular Plants, vol. 1. Springer, Berlin, Heidelberg, pp. 258–263. https://doi.org/10.1007/978-3-662-02604-5_44
Labiak, P.H. & Karol, K.G. (2017) Plastome sequences of an ancient fern lineage reveal remarkable changes in gene content and architecture. American Journal of Botany 104 (7): 1008– 1018. https://doi.org/10.3732/ajb.1700135
Lindsay, S., Phutthai, T., Sridith, K., Chantanaorrapint, S. & Middleton, D. (2012) Actinostachys wagneri (Schizaeaceae), a new record for Thailand. Thai Forest Bulletin (Botany) 40: 14–16.
Mickel, J.T. & Smith, A.R. (2004) The Pteridophytes of Mexico. Memoirs of the New York Botanical Garden 88: 1–1054.
PPG I (2016) A community-derived classification for extant lycophytes and ferns. Journal of Systematics and Evolution 54 (6): 563–603. https://doi.org/10.1111/jse.12229
Reed, C.F. (1947) The phylogeny and ontogeny of the Pteropsida. Schizaeales. Boletim da Sociedade Broteriana 2 (21): 71–197.
Smith, A.R., Pryer, K.M., Schuettpelz, E., Korall, P., Schneider, H. & Wolf, P.G. (2006) A classification for extant ferns. Taxon 55 (3): 705–731. https://doi.org/10.2307/25065646.
Tryon, R.M. & Tryon, A.F. (1982) Ferns and allied plants, with special reference to tropical America. Springer-Verlag, pp. 1–857. https://doi.org/10.1007/978-1-4613-8162-4
Wikstrom, N., Kenrick, P. & Vogel, J.C. (2002) Schizaeaceae: A phylogenetic approach. Review of Palaeobotany and Palynology 119 (1–2): 35–50. https://doi.org/10.1016/S0034-6667(01)00128-2
Amoroso, V.B., Coritico, F.P. & Fritsch, P.W. (2020) Actinostachys minuta, a new species of grass fern from Mindanao, Philippines. PhytoKeys 151: 59–66. https://doi.org/10.3897/phytokeys.151.53100
Christenhusz, M.J.M., Zhang, X.C. & Schneider, H. (2011) A linear sequence of extant families and genera of lycophytes and ferns. Phytotaxa 19: 7–51. https://doi.org/10.11646/phytotaxa.19.1.2
Holttum, R.E. (1955) A Revised Flora of Malaya (edition 1, vol. 2). In: Ferns of Malaya, vol. 52. Government Printing Office, Singapore, 653 pp.
IUCN Standards and Petitions Committee (2019) Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Committee. Available from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 15 February 2021)
Kramer, K.U. (1990) Schizaeaceae. In: The Families and Genera of Vascular Plants, vol. 1. Springer, Berlin, Heidelberg, pp. 258–263. https://doi.org/10.1007/978-3-662-02604-5_44
Labiak, P.H. & Karol, K.G. (2017) Plastome sequences of an ancient fern lineage reveal remarkable changes in gene content and architecture. American Journal of Botany 104 (7): 1008– 1018. https://doi.org/10.3732/ajb.1700135
Lindsay, S., Phutthai, T., Sridith, K., Chantanaorrapint, S. & Middleton, D. (2012) Actinostachys wagneri (Schizaeaceae), a new record for Thailand. Thai Forest Bulletin (Botany) 40: 14–16.
Mickel, J.T. & Smith, A.R. (2004) The Pteridophytes of Mexico. Memoirs of the New York Botanical Garden 88: 1–1054.
PPG I (2016) A community-derived classification for extant lycophytes and ferns. Journal of Systematics and Evolution 54 (6): 563–603. https://doi.org/10.1111/jse.12229
Reed, C.F. (1947) The phylogeny and ontogeny of the Pteropsida. Schizaeales. Boletim da Sociedade Broteriana 2 (21): 71–197.
Smith, A.R., Pryer, K.M., Schuettpelz, E., Korall, P., Schneider, H. & Wolf, P.G. (2006) A classification for extant ferns. Taxon 55 (3): 705–731. https://doi.org/10.2307/25065646.
Tryon, R.M. & Tryon, A.F. (1982) Ferns and allied plants, with special reference to tropical America. Springer-Verlag, pp. 1–857. https://doi.org/10.1007/978-1-4613-8162-4
Wikstrom, N., Kenrick, P. & Vogel, J.C. (2002) Schizaeaceae: A phylogenetic approach. Review of Palaeobotany and Palynology 119 (1–2): 35–50. https://doi.org/10.1016/S0034-6667(01)00128-2