Asplenium claussenii Hieron.

  • Authority

    Morton, Conrad V. & Lellinger, David B. 1966. The Polypodiaceae subfamily Asplenioideae in Venezuela. Mem. New York Bot. Gard. 15: 1-49.

  • Family

    Aspleniaceae

  • Scientific Name

    Asplenium claussenii Hieron.

  • Type

    Type. Hieronymus divided the species into three forms - f. angustifolia, f. latifolia, and f. nigricans, the last named stated to be intermediate between the other two; the first, f. angustifolia, can be taken as representing typical f. claussenii, the syntypes of which are: Monte Verde, Cuba, Wright 1024 (B, photograph 9327); Mount Galsa, Puerto Rico, Sintenis 4222; Cocollar, near Caripe, Venezuela, Moritz 185 (B, photograph 9330) ; Las Lagunas, Venezuela, Moritz 186 (B, photograph 9330); and Colonia Tovar, Venezuela, Fendler 138 (B, photograph 9331). The last named, which is a good specimen of a widely distributed collection, is here designated as lectotype.

  • Description

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    Species Description - Rhizomes epiphytic, short, ascending; fronds fasciculate, mostly ca. 30 cm long, the stipes up to one-half as long as the blades, greenish- or brownish-violet, ca. 1.5 mm in diameter near base, narrowly green-alate toward the apex; rhachis similar to the stipe, narrowly green-alate, glabrous, scaleless; blades linear-lanceolate, ca. 3 cm broad, gradually narrowed to the apex and base, not proliferous, simply pinnate; pinnae up to 50 pairs, oblong, ca. 1.5 cm long and 5-7 mm wide, obtuse, straight at the lower base for more than 10 mm, truncate at the upper base, the upper side with 8-13 teeth, including the 3-5 of the auricle, the lower side with 4-6 teeth, subauriculate at the superior base, the auricle obtuse or truncate; veins on the upper side 5-8, the lower 2-4 once-forked, those of the lower side 4-6, all simple.

  • Discussion

    Asplenium claussenii f. angustifolia Hieron. Hedwigia 60: 243.

    Distribution: Uncertain, but surely Cuba, Puerto Rico, Venezuela 1B Concerning the date of publication, see Jour. Bot. Brit. & For. 1901: 206.

    (Distrito Federal. Aragua), and Brazil. This must be one of the rarer species in Venezuela, for it is not represented in the U. S. National Herbarium.