Polyphlebium borbonicum (Bosch) Ebihara & Dubuisson

Ahamada H. Saïd, Sabine Hennequin, Germinal Rouhan & Jean-Yves Dubuisson, 2017, Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Comoros, European Journal of Taxonomy 313, pp. 1-53 : 29

publication ID

https://doi.org/ 10.5852/ejt.2017.313

DOI

https://doi.org/10.5281/zenodo.5613860

persistent identifier

https://treatment.plazi.org/id/038B9637-6933-2A6D-B0C5-FD0F15D0FEAA

treatment provided by

Plazi

scientific name

Polyphlebium borbonicum (Bosch) Ebihara & Dubuisson
status

 

Polyphlebium borbonicum (Bosch) Ebihara & Dubuisson View in CoL

Polyphlebium borbonicum (Bosch) Ebihara & Dubuisson in Ebihara et al. View in CoL , Blumea View in CoL 51: 240 (2006). –

Trichomanes borbonicum Bosch, Nederlandsch Kruidkundig Archief View in CoL 5: 158, 159 (1861). – Type: ‘Hab. Ins. Borboniae’, L.H. Boivin 908 (lecto-: B200103881!, designated by Schelpe & Anthony (1986: 76); isolecto-: P00065006!).

Trichomanes goetzei Hieron., Botanische Jahrbücher View in CoL 28: 339 (1900). – Type: Tanzania, W. Goetze 194 (holo-: B200093147!; iso-: BM).

Vandenboschia borbonica (Bosch) G.Kunkel View in CoL , Nova Hedwigia 6: 213 (1963).

Crepidomanes borbonicum (Bosch) J.P.Roux, Conspectus View in CoL of southern African pteridophyta: 45 (2001).

Short description

Epiphytic or lithophytic; long-creeping filiform rhizomes, bearing sparsely distributed roots and reddish brown trichomes, and widely separated pending fronds; fronds stipitate, up to 17 cm long, more often less than 10 cm long, deltoid to ovate, pinnate-pinnatifid to bipinnate-pinnatifid, without false veins or folds; sori numerous, paratactic, twice or more longer than wide, cylindrical with slightly dilated mouth.

Global distribution

Tropical Africa and the western Indian Ocean, or pantropical (see note).

Distribution in Comoros

Anjouan, Grande Comore.

Additional specimens examined

COMOROS: ANJOUAN, Sommet du Tringi, 12 Nov. 2009, M.Pignal et al. 3725 (P02439799). GRANDE COMORE, La Convalescence (versant ouest du Massif), 24 Nov. 2002, F.Rakotondrainibe et al. 6793 (P00312024); Versant ouest du volcan Karthala, bois proche de Convalescence, 24 Oct. 2008, M. Pignal et al. 3383 (P02439786).

Note

This species, firstly considered restricted to tropical Africa and the western Indian Ocean, would be included into a large complex associating species from the Pacific and Neotropics ( Ebihara et al. 2009). The species can be confused by its growth-form and gross frond shape and division with Crepidomanes bipunctatum and C. inopinatum . Both Crepidomanes species are rootless contrary to P. borbonicum but some Polyphlebium specimens can appear rootless if roots are not well developed. The sorus features are nevertheless more diagnostic. Sorus lips are clearly triangular in C. bipunctatum and not in P. borbonicum , and sori of P. borbonicum are twice or more longer than wide while sori of C. inopinatum are more or less as long as wide, always significantly less than twice longer (see Fig. 2C View Fig. 2 ).

Kingdom

Plantae

Phylum

Tracheophyta

Class

Polypodiopsida

Order

Hymenophyllales

Family

Hymenophyllaceae

Genus

Polyphlebium

Loc

Polyphlebium borbonicum (Bosch) Ebihara & Dubuisson

Ahamada H. Saïd, Sabine Hennequin, Germinal Rouhan & Jean-Yves Dubuisson 2017
2017
Loc

Trichomanes goetzei Hieron., Botanische Jahrbücher

Hieron., Botanische Jahrbucher 1900
1900
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF