Trichomanes boivinii Bosch

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 : 30

Trichomanes boivinii Bosch

Trichomanes boivinii Bosch, Nederlandsch Kruidkundig Archief 4: 373 (1858), as ‘ bovini ’. – Type: ‘Hab. Ins. Ste. Marie (Madagascar)’, L.H. Boivin s.n. (Herb. de Franqueville, not located).

Trichomanes latipinnulata Bonap. , Notes ptéridologiques 9: 28 (1920a) – Type: Madagascar, Mont Vatovavy, H.Perrier de la Bâthie 11549 (lecto-: P00466427!; isolecto-: P00466426!, here designated); Madagascar, H.Perrier de la Bâthie 7740 (syn-: P00466429!); Madagascar, Mont Vatovavy, H.Perrier de la Bâthie 11544 (syn-: P00466428!).

Trichomanes cornutum C.Chr. , Notes ptéridologiques 12: 18, fig. 6 (1920). – Type: Madagascar, L. Humblot 280 (holo-: P00466432!; iso-: P00466430!, P00466431!). Note: Three herbarium sheets of this gathering are kept at P, and although Christensen did not indicate the holotype in his publication, the holotype is established based on Art. 9.3 of the code ( McNeill et al. 2012): the specimen P00466432 is indeed the only specimen examined by Christensen for his original description since he mentioned that any rhizome is unknown to him (the two other specimens P00466430 and P00466431 have rhizomes).

Short description

Terrestrial or lithophytic, often near streams; thick short-creeping rhizomes with robust roots and bearing clustered erect fronds; fronds well stipitate, up to 45 cm long, lanceolate to ovate, bipinnate to bipinnatepinnatifid, with multi-veined ovate to spatulate ultimate segments; numerous sori, paratactic, obconic to campanulate with a slightly dilated mouth.

Global distribution

Madagascar, Comoros.

Distribution in Comoros

Mayotte.

Additional specimens examined

COMOROS: MAYOTTE, Rivière Cambani, à 2.5 km à l’est de la ville de Combani, 12 Nov. 2002, F.Rakotondrainibe et al. 6675 (P00311390); Mtsangamouji, s.d. G.Viscardi 292 (P02439810).

Note

The sheet P00466427 consists of two complete individuals with fertile fronds, and specimens are representative of the morphology of the species. Moreover, this sheet was probably intended to be the holotype, as indicated by the handwritten annotation ‘Original’ by Bonaparte. For all these reasons, P00466427 was selected as the lectotype specimen for Trichomanes latipinnulata Bonap.