Ormopteris J.Sm. ex J. Sm., Hist. Fil.

Yesilyurt, Jovita C., Barbará, Thelma, Schneider, Harald, Russell, Stephen, Culham, Alastair & Gibby, Mary, 2015, Identifying the generic limits of the Cheilanthoid genus Doryopteris, Phytotaxa 221 (2), pp. 101-122 : 118

Ormopteris J.Sm. ex J. Sm., Hist. Fil. : 281. 1875.

Type species:— Cassebeera gleichenioides Gardner, Icon. Pl. 6: t. 507. 1843.

= Ormopteris gleichenioides (Gardner) J.Sm., Hist. Fil. 281. 1875. Type:— BRAZIL. Minas Gerais: Diamantina, Gardner 5295 ( K). Homotypic synonyms: — Pellaea sect. Ormopteris (J.Sm. ex J.Sm.) R.M.Tryon & A.F.Tryon, Rhodora 83: 135. 1981.

Pellaea subgenus Ormopteris (J.Sm.) C.Chr., Index Fil. (1906: XL).

Plants terrestrial or rupestral, to 30 (–60) cm tall. Rhizomes short, ascending (creeping) or horizontal; scales of rhizome and petiole bases clathrate to non-clathrate, lanceolate, long-lanceolate, lanceolate-ovate. Petioles with one vascular bundle at the base, terete to sulcate or strongly grooved, glabrous or with trichomes or scale-like fibrils. Fronds monomorphic to slightly dimorphic. Lamina dissection diverse, varying from 1-pinnate to 3-pinnate; glabrous or occasionally with hairs on the main veins; rachis terete or sulcate adaxially; glabrous. Veins free, and may form hydathodes . Sori marginal to predominantly submarginal. Receptacles discontinuous to rarely forming a continuous line (vascular commissure). Pseudo-indusium abruptly and strongly differentiated from the margin, smooth to somewhat irregular. Paraphyses absent. Sporangia sessile or stalks shorter than the sporangium capsule, length to up to twice its lengh (long-stalked); basal cell of sporangium sometimes conspicuous. Spores cristate to densely rugose.

Distribution:— South America, with most of the species endemic to Brazil.

Notes:— The concept clearly excludes Doryopteris triphylla as Diels (1899) recognized the genus Cassebeera with the following taxa: D. triphylla , Ormopteris gleichenioides and O. pinnata ), and separates it from Pellaea . Although they have on various occasions been put together under the name Cassebeera ( Kaulfuss 1824, Hooker & Baker 1868, Christ 1897, Diels 1899), the present recovered phylogeny shows that D. triphylla is not closely related to the species of the Ormopteris group. Therefore, as already stated above elsewhere, the oldest available name for this clade is Ormopteris , and not Cassebeera , which is based on D. triphylla .

The main characters that define this genus are based on the rhizome habit (creeping), scales (mix of clathrate and non-clathrate, lanceolate to long-lanceolate) and the lamina (varying from 1-pinnate to 3-pinnate).

List of species:

Ormopteris gleichenioides (Gardner) J.Sm., Hist. Fil. : 281. 1875.

Ormopteris pinnata (Kaulf.) Lellinger, Mem. New York Bot. Gard. 23: 6. 1972.

Ormopteris crenata (R.M.Tryon) Barbará , comb. nov.

Basionym:— Pellaea crenata R.M.Tryon, Contr. Gray Herb. 143: 68. 1942.

Type material:—Serra do Cipó, Minas Gerais, Brazil, July 12,13, 1940, Foster & Foster 624 ( US) Ormopteris cymbiformis (J.Prado) Barbará , comb. nov.

Basionym:— Pellaea cymbiformis J.Prado, Amer. Fern J. 83: 129, fig. 1. 1993

Type material:— Brazil: Goveia, Minas Gerais, April 9, 1982, Furlan et al. s. n. ( SPF)

Ormopteris flavescens (Fée) Barbará , comb. nov.

Basionym:— Pellaea flavescens Fée, Crypt. Vasc. Bresil 1: 44. 1869.

Type material:— Brazil: Petrópolis, Rio de Janeiro, Glaziou 2473 ( K)

Ormopteris riedelii (Baker) Barbará , comb. nov.

Basionym:— Pellaea riedelii Baker, Ann. Bot. (Oxford) 5: 213. 1891.

Type material:— Brazil: Riedel s.n. ( K)