The Fern Gazette Volume 16 Part 3

Published 5 December 2000

Edited by J.M. Camus & J.A. Crabbe


New pteridophyte records from Gabon, west Africa, with a preliminary species list for Haut-Ogooué province
N. I. Mundy pg(s) 125-142
Seven new pteridophyte species records for Gabon are reported. A preliminary list of pteridophyte species of Haut-Ogooué province is also presented.

Equisetum x font-queri Rothm. (E. palustre L. X E. telmateia Ehrh.) (Equisetaceae: Pteridophyta) in Ireland
M. Lubienski pg(s) 143-145
Equisetum x font-queri, the hybrid between Equisetum palustre and Equisetum telmateia could be discovered in County Sligo, Ireland. Together with its parents it grows vigorously at three separated localities. This presumably first record for Ireland is not surprising, because up to now this hybrid is known to exist at several stations in the British Isles. Outside Britain Equisetum x font-queri has been known only from Spain (solely from the type locality) and France. Recently it was discovered in Germany. It is also a member of the North American flora (Canada). The Sligo plants show a remarkable vegetative spreading, which seems to be a general feature of this horsetail hybrid.

Fern spore rain collected at two different heights at Moji Guaçu (São Paulo, Brazil)
E.A. Simabukuro, L.M. Esteves & G.M. Felippe pg(s) 147-166
This paper presents an analysis of pteridophyte spore rain collected at two different heights at the Reserva Biológica e Estação Experimental de Moji Guaçu (São Paulo state), Brazil. This is a contribution on the methodology of collecting spores in the spore rain in Brazil dealing with the height at which the collectors should be placed. Spore rain was collected monthly in four localities: open cerrado, cerrado, gallery forest and marsh and at two heights: 0.5 m and 1.5 m above the ground. The study was carried out from April 1995 to July 1996. A total of 40 species of pteridophyte occur in the area but spores of only 16 species were present in the spore rain from the 0.5 m collector and 19 from the 1.5 m collector. Spores of some species were present in both collectors, but some species were specific to one collector only. In all localities and at the two heights the highest percentage of spores was observed in the summer-autumn months (November-April). The two collector heights provide a list for each site which is longer than the lists for each collector individually. From the present results we now know that in future studies of spore rain there is the need to use more than one collector at each site and to combine the results in order to obtain at least a reasonably complete qualitative assessment of the fern spore rain.


F.J. Rumsey pg(s) 146,167

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