Loxogrammoideae H.Schneid., 2011

Christenhusz, Maarten J. M., Zhang, Xian-Chun & Schneider, Harald, 2011, A linear sequence of extant families and genera of lycophytes and ferns, Phytotaxa 19 (1), pp. 7-54 : 18-19

Subfamily 48a. Loxogrammoideae H.Schneid. , subfam. nov. ( Dictymia , Loxogramme ).

Basionym: Loxogrammaceae Ching ex Pic.Serm. , Webbia 29: 11 (1974).

Type: Loxogramme .

Subfamily 47b. Drynarioideae Crabbe, Jermy & Mickel, Fern Gaz. 11: 156 (1975).

( Aglaomorpha , Arthromeris , Christiopteris , Drynaria , Gymnogrammitis , Paraselliguea , Phymatopteris , Polypodiopteris , Selliguea ).

Note:—This subfamily includes the drynarioid and selligueoid ferns. The genus number of both groups is currently uncertain. We are recognizing the genera that are currently widely accepted.

Subfamily 48c. Platycerioideae B.K.Nayar, Taxon 19: 233 (1970). ( Platycerium , Pyrrosia ).

Subfamily 48d. Microsoroideae B.K.Nayar, Taxon 19: 233 (1970), as ‘ Microsorioideae ’.

Lepisoroideae Ching, Acta Phytotax. Sin. 16: 17 (1978), as ‘ Lepisorioideae ’.

( Dendroconche , Goniophlebium , Kaulinia , Kontumia , Lecanopteris , Lemmaphyllum , Lepisorus , Lepidomicrosorium , Leptochilus , Microsorum , Neocheiropteris , Neolepisorus, Paragramma , Phymatosorus , Podosorus , Thylacopteris , Tricholepidium ).

Note:—The status of several genera of this group is controversial ( Kreier et al. 2008). The genus Microsorum is polyphyletic and will need to be separated into natural genera in the future. The monotypic genus Kontumia is tentatively assigned to the microsoroid ferns and not to the selligueoid ferns as suggested by Wu et al. (2005). This assignment is based on observations of the rhizome scales carried out by P. Hovenkamp (Leiden) who studied the type material. Currently, we are lacking DNA sequences to confirm its relationship.

Subfamily 48e. Polypodioideae B.K.Nayar, Taxon 19: 234 (1970).

Pleopeltidoideae B.K.Nayar, Taxon 19: 234 (1970).

( Campyloneurum , Microgramma , Niphidium , Pecluma , Phlebodium , Pleopeltis , Pleurosoriopsis , Polypodium , Serpocaulon , Synammia , and the grammitids: Acrosorus , Adenophorus , Calymmodon , Ceradenia , Chrysogrammitis , Cochlidium , Ctenopteris , Dasygrammitis , Enterosora , Grammitis , Lellingeria, Leucostrichum , Luisma , Melpomene , Micropolypodium , Nematopteris , Oreogrammitis , Prosaptia , Radiogrammitis , Scleroglossum , Terpsichore , Themelium, Tomophyllum , Xiphopterella , Xiphopteris , Zygophlebia ).

Note:—The number of genera in the grammitid ferns is still in flux. A research group under the leadership of Dr. Tom Ranker is currently studying this complex.