Polypodium
The genus Polypodium includes about 160 species of subcosmopolitan distribution, with maximum diversity in tropical areas. This epiphytic and terrestrial genus is characterized by adnate pinnae, once-pinnate fronds, on a thick, long-creeping and branching rhizome on surface. Big, round, yellow orange sori, without indusium, appear in autumn, on the pinnae underside. Three species and 2 recognized hybrids in European flora : P. interjectum, P. cambricum, P. vulgare, P. x shivasiae and P. x mantoniae. In the Polypodium genus, the species come in many subspecies and varieties, and hundreds of cultivars, especially for P. cambricum. British amateurs and botanists have particularly devoted themselves to identifying, describing and listing, numerous variants and cultivars, since the nineteenth century. To be identify with certainty, European species and hybrids need an thorough observation with a microscope.
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Polypodium cambricum
Family : Polypodiaceae.
Syn. Polypodium australe.
Pinnate broad fronds, with the apex abruptly reduced to a long nib.. The young fronds appear in late summer. The rhizome is branching and creeping on the surface. Although slow growing, it is a strong ground cover, for screes, banks, in a humusy, drained soil, acidic or chalky, in the shade or sun, according to the region. Evergreen. Height : 15/55cm. Hardiness : -20°C.
14.00 € -
Polypodium cambricum 'Grandiceps Fox'
Family : Polypodiaceae.
Polypody with narrow fronds, regularly crested at the tip of the pinnae and at the apex. The crests are slightly undulate. Beautiful and strong ground cover. For cool rockeries, humusy and drained soil, acidic or alkaline, in shade or medium shade. Evergreen. Height : 20/30cm. Hardiness : -20°C.
14.00 € -
Polypodium cambricum 'Macrostachyon'
Family : Polypodiaceae.
This polypody is different from the species by its broad and short lamina, its tight pinnae and a very stretched and tapered apex. The rhizome is branching and creeping. Light green, dense and persistent foliage. Very attractive ! For a cool rockery, banks, humusy and drained soils, acidic or alkaline, in shade or medium shade. Evergreen. Height : 20/25cm. Hardiness : -20°C.
14.00 € -
Polypodium cambricum 'Prestonii'
Family : Polypodiaceae.
Elegant cultivar, slow growing, with light green, angular, lacerated and wavy pinnae, giving a dense and curly look. The rhizome is branching and creeping on the surface. For a drained, humusy and cool soil, in shade or medium shade. Evergreen. Height : 25/30cm. Hardiness : -20°C.
14.00 € -
Polypodium cambricum 'Richard Kayse'
Family : Polypodiaceae.
Magnificent cultivar, slow growing, with light green, angular, lacerated, sharp pinnae, giving a dense look. The rhizome is branching and creeping on the surface. For a drained, humusy and cool soil, in shade or medium shade. Evergreen. Height : 25/30cm. Hardiness : -20°C.
15.00 € -
Polypodium cambricum 'Barrowii'
Family : Polypodiaceae.
Cultivar with bipinnatifid fronds, ovate, quite narrow, dense. Pinnae and lobes are sharp and twisted. For a drained, humusy and cool soil, in shade or medium shade. Evergreen. Height : 30cm. Hardiness : -20°C.
14.00 € -
Polypodium cambricum 'Herbert Whitley'
Family : Polypodiaceae.
This cultivar is distinguished by its pinnatifid pinnae, progressively more towards the apex, and slightly crested at the tips. For a cool rockery, banks, humusy and drained soils, acidic or alkaline, in shade or medium shade. Evergreen. Height : 30/40cm. Hardiness : -25°C.
14.00 € -
Polypodium cambricum 'Hornet'
Family : Polypodiaceae.
Dwarf polypody, quite strange, slow growing, with narrow fronds, very short pinnae and of unequal length, as gnawed ; the top of the fronds, stretched. For alkaline or acidic soil, well drained, in medium shade or sun according to the region. Evergreen. Height : 10/20cm. Hardiness : -20°C.
14.00 €
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