Oceaniopteris whelanii (F.M.Bailey) Gasper & Salino, 2016

Gasper, André Luís De, Dittrich, Viníciusantonio De Oliveira, Smith, Alan R. & Salino, Alexandre, 2016, A classification for Blechnaceae (Polypodiales: Polypodiopsida): New genera, resurrected names, and combinations, Phytotaxa 275 (3), pp. 191-227 : 215

8. Oceaniopteris whelanii (F.M.Bailey) Gasper & Salino , comb. nov. — Blechnum whelanii F.M.Bailey, Rep. Bellenden-Ker Range 77. 1889.

Parablechnum C.Presl, Abh. Königl. Böhm. Ges. Wiss. , ser. 5, 6: 469. 1851. — Type: Parablechnum procerum (G.Forst.) C.Presl, Epimel. Bot. 109. 1851. Figs. 4G , 7D .

Orthogramma C.Presl, Epimel. Bot. 121. 1851 — Type: Orthogramma gilliesii (Hook. & Grev.) C.Presl , based on Lomaria gilliesii Hook. & Grev. [= Blechnum chilense (Kaulf.) Mett. ]

Lomaria subg. Paralomaria Fée, Mém. Fam. Foug. 5: 69 (Gen. Fil.). 1852. — Type: Lomaria procera (G.Forst.) Spreng. , based on Osmunda procera G.Forst. [= Blechnum procerum (G.Forst.) Sw. ]

Plants terrestrial; rhizomes erect or suberect,sometimes subarborescent to decumbent, short-creeping, non-stoloniferous, stout, clothed with reddish to brown, bicolorous or concolorous, ovate or ovate-lanceolate, entire or denticulate scales one cell thick, sometimes covered by mucilage; fronds usually dimorphic, rarely monomorphic or subdimorphic; stipes stout, long, stramineous, light brown, or dark purplish, proximally with scales similar to those of rhizomes, scaly, rarely with twisted hairs; blades concolorous, oblong to lanceolate, 1-pinnate, bases truncate, apices conform; rachises glabrous or glabrescent to often densely scaly; buds absent or present in a few species; aerophores sometimes borne at the bases of pinnae abaxially; pinnae sessile or stalked, usually not articulate (articulate in P. articulatum ), often falcate, oblong-linear, lanceolate, plane or revolute at margins, entire or finely denticulate; veins free, simple to 1- furcate, clavate at tips adaxially, near pinna margins; sori linear, indusia subentire to lacerate or erose; x = 28, 31, 33.

Species number, comments, and distribution:— About 65 species, pantropical. The species of Parablechnum are characterized by the truncate laminae, 1-pinnate blades, and conform or subconform apices. The genus is most closely related to Lomariocyas and a clade formed by Neoblechnum , Oceaniopteris , and Doodia (Gasper et al. in press).

Figures

FIGURE 4. General appearance of the genera of Blechnaceae subfamily Blechnoideae (G-S). A. Icarus filiformis (WELT P009478); B. Lomaria nuda (P01557820); C. Lomaridium fragile (MEXU 149093); D. Lomariocycas aurata (QCA7004842); E. Neoblechnum brasiliense (FURB06585); F. Oceaniopteris cartilaginea (P01630912). G. Parablechnum cordatum (FURB06639); H. Sadleria pallida (MEXU 956078); I. Struthiopteris spicant (P01658104). Vouchers are indicated by herbarium barcodes.

FIGURE 7. Habitat of Blechnaceae genera. A. Lomariocycas schomburkii. B. Neoblechnum brasiliense; C. Oceaniopteris gibba; D. Parablechnum glaziovii; E. Sadleria cyatheoides; F. Struthiopteris spicant; F. Photos from:A–B. Luis Adriano Funez; C. Vojtěch Zavadil; D. Vinícius A.O. Dittrich; E. Kit Herring; F. Ralf Knapp. Reproduced with permission from the authors.