. The British fern gazette. Ferns. 318 BRITISH FERN GAZETTE: VOLUME 10 PART 6 (1973) (a) Frequency: This is given with respect to the whole island (not to one zone or one habitat type). It would be desirable to give numbers per area unit but this is seldom possible; see Wilmanns (1966). 5 degrees indicate the relative frequency: vr = very rare (only 1 to 3 localities of max. 100 m2. The habitat type is mostly so specialized that only very few similar places exist), r = rare o = occasional c = common vc = very common (in colloquial language "everywhere") (b) Altitudinal zones: L = fro
. The British fern gazette. Ferns. 318 BRITISH FERN GAZETTE: VOLUME 10 PART 6 (1973) (a) Frequency: This is given with respect to the whole island (not to one zone or one habitat type). It would be desirable to give numbers per area unit but this is seldom possible; see Wilmanns (1966). 5 degrees indicate the relative frequency: vr = very rare (only 1 to 3 localities of max. 100 m2. The habitat type is mostly so specialized that only very few similar places exist), r = rare o = occasional c = common vc = very common (in colloquial language "everywhere") (b) Altitudinal zones: L = from sea level up to 200 m: the cultivated zone M = from 200 m up to 600 m: the zone with pastures and lower Cryptomeria forests with much Hedychium H = above 600 m, the zone with heath and thickets of the Ericetum azoricae and upper Cryptomeria forests with diminished Hedychium ( ) = rarely in that zone in brackets (c) Habitat types: F = fissures of rocks and walls (rarely on rock surfaces) HT= heaths, laurel thickets P = percolated wet places R = ruderal sites S = open slopes (without forest) W = woody ravines The nomenclature is mainly based on Flora Europaea i (Tutin et al. 1964) and Carvalho e Vasconcellos (1968). We did not find Diphasium madeirense (Wilce) Rothm., cited for Pico da Vara nor the four species, Pteris cretica L., P. mu/tifida Poir., P. tremula , and Doodia caudata , which are cited by Carvalho e Vasconcellos (1968) and Palhinha (1966) as subspontaneous. Occasionally, especially in forests of Cryptomeria and Acacia, we saw tree-ferns (A/sophi/a spp.), escaped from cultivation. Of the following 47 species four are new records for Sao Miguel and two for the FIGURE 4: Distribution map: 1 = Lycopodiella cernua; 2 = Pityrogramma chrysophylla; 3 = Equisetum telmateia; 4 = Asplenium marinum; 5 = Adiantum capillus-veneris. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - color
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectferns, bookyear1909
