References in periodicals archive
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These are lineal forests usually 12-18 m high, whose undergrowth normally includes not only Erica arborea but also some acidophilous species frequently recorded in the nearby climatophilous forests (Avenella flexuosa, Blechnum spicant, Dryopteris affinis, Dryopteris dilatata, Euphorbia dulcis, Hedera hibernica, Holcus mollis, Lonicera periclymenum, Luzula henriquesii, Omphalodes nitida, Oxalis acetosella, Polypodium vulgare, Saxifraga spathularis, Stellaria holostea, Teucrium scorodonia, Vaccinium myrtillus or Viola riviniana).
salicetosum atrocinereae, occurring at the supratemperate levels of the Galician-Leonese ranges of Courel and Ancares (Western Orocantabrian sector in the Rodriguez Guitian & Ramil-Rego biogeographical classification), and distinguishable from the typical subassociation by the presence of plants such as Salix atrocinerea, Blechnum spicant, Chaerophyllum hirsutum, Cirsium palustre, Adenostyles hybrida and Athyrium filix-femina (IZCO& al., 1986).
Gametophyte ontogeny, sex expression, and genetic load as measures of population divergence in Blechnum spicant. Amer.
Blechnum spicant: habitat and vigor of optimal, marginal and disjunct populations, and field observations of gametophytes.
Gametophyte culture and antheridiogen activity in Blechnum spicant L.
--la ausencia/presencia puntual en Neottio-Fagetum y Epipactido-Fagetum de determinadas especies caracteristicas de Quercetalia roboris y Querco-Fagetea relativamente frecuentes en Carici-Fagetum, como Avenella flexuosa, Blechnum spicant, Dryopteris affinis s.l., D.
En la zona de estudio hay otras especies de helechos como Pteridium aquilinum, que no presenta esporas, y Blechnum spicant, cuyos gametofitos presentan tricomas, pero muy escasos por lo que no hay confusion.
Asi, entre los taxones caracteristicos de la asociacion lusa se encuentran especies como Athyrium filix-femina, Blechnum spicant, Hedera hibernica, Omphalodes nitida, Osmunda regalis, Saxifraga spathularis, Salix atrocinerea y Woodwardia radicans, ademas de companeras como Erica arborea o Fraxinus angustifolia, que son muy raras o estan totalmente ausentes de los lauredales interiores estudiados por nosotros.
ulmifolius, Polypodium vulgare, Holcus mollis, Blechnum spicant, Dryopteris affinis, Solidago virgaurea, Oxalis acetosella).
vagans, que acompanan a un elevado numero de plantas herbaceas, entre las que merecen especial atencion la variedad de helechos existentes (Athyrium filix-femina, Blechnum spicant, Dryopteris aemula, D.
[E.sub.3] 50 55 90 40 20 (<1,5 m) (%) Area ([m.sup.2]) 300 500 300 400 1000 No taxones 27 17 26 19 18 No de orden 1 2 3 4 5 Taxones caracteristicos de asociacion Fagus sylvatica 5 5 5 5 5 Blechnum spicant 2 1 2 2 + Luzula henriquesii 1 2 1 .
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