Hymenophyllum subg. Mecodium C.Presl ex Copel., Philipp. J. Sci.

Kessler, Michael & Smith, Alan R., 2017, Prodromus of a fern flora for Bolivia. X. Hymenophyllaceae, Phytotaxa 328 (3), pp. 201-226 : 208

publication ID

https://doi.org/ 10.11646/phytotaxa.328.3.1

persistent identifier

https://treatment.plazi.org/id/1D5B787C-FFAF-265F-1D8B-8766FE80F81E

treatment provided by

Felipe

scientific name

Hymenophyllum subg. Mecodium C.Presl ex Copel., Philipp. J. Sci.
status

 

Hymenophyllum subg. Mecodium C.Presl ex Copel., Philipp. J. Sci. 64: 93. 1937.

= Mecodium (C.Presl ex Copel.) Copel., Philipp. J. Sci. 67(1): 17. 1938.

Members of subg. Mecodium have entire segment margins and glabrous blades. Because of the limited number of characters and extreme morphological variation, species delimitation is particularly difficult in this group. Winged tissue along the petioles and rachises is often important for species identification, but may be lost or shrivelled during drying.

Important diagnostic species characters include size of fronds; whether blades are planar or crisped; whether the petioles and rachises are green-winged or not; shape of the sori and involucres (more or less orbicular vs. broader than long, sometimes borne on a short, narrowly to broadly winged stalk); involucral bases rounded (vs. acute), tips entire (vs. lacerate).

Kingdom

Plantae

Phylum

Tracheophyta

Class

Polypodiopsida

Order

Hymenophyllales

Family

Hymenophyllaceae

Genus

Hymenophyllum

Loc

Hymenophyllum subg. Mecodium C.Presl ex Copel., Philipp. J. Sci.

Kessler, Michael & Smith, Alan R. 2017
2017
Loc

Hymenophyllum subg. Mecodium C.Presl ex Copel., Philipp. J. Sci.

Copel. 1937: 93
1937
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