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Hybridization and allopolyploidy involving Cystopteris bulbifera and other North American Cystopteris species have generated several species. In the eastern portion of its range, C . bulbifera and C . protrusa are the diploid progenitors of the tetraploid C . tennesseensis (C. H. Haufler et al. 1990). In northeastern North America, C . bulbifera has hybridized with tetraploid C . fragilis , ultimately resulting in the hexaploid C . laurentiana (R. F. Blasdell 1963). In the southwest, the diploid C . reevesiana and disjunct representatives of C . bulbifera are the progenitors of the tetraploid C . utahensis (C. H. Haufler and M. D. Windham 1991). In addition to these fertile allopolyploids, sterile hybrids are also possible when C . bulbifera is sympatric with its polyploid derivatives. Sterile hybrids between C . bulbifera and C . tennesseensis have been identified from several localities. Cystopteris bulbifera may hybridize with C . tenuis to form C . × illinoensis (C. H. Haufler et al. 1990; R. C. Moran 1982b). Diploid sexual C . bulbifera may be distinguished from these allopolyploid species and sterile hybrids because the hybrid-derived taxa (1) will normally have less prominent glandular hairs, (2) will have misshapen bulblets, (3) will more likely have blades that are widest above the base, and (4) will have large spores (in sexual allopolyploids) or malformed spores (in sterile hybrids).
Cystopteris bulbifera, with the common name bulblet fern, bulblet bladderfern, or bulblet fragile fern is a fern in the family Cystopteridaceae.
The fern is native to eastern Canada, the Midwestern and Eastern United States, and two disjunct populations in the Southwestern United States.
It is found only on calcareous substrates such as limestone. It commonly festoons limestone cave openings. While most commonly found on vertical rock faces, it also grows in rocky scree.
Cystopteris bulbifera is a low-growing rock fern with creeping stems and narrow elongate deltate fronds which grow to 75 cm (30 in). C. bulbifera is unusual among ferns in producing bulblets along the bottom of the fronds. This is one of the easiest Cystopteris species to identify.
This species is known to hybridize with Cystopteris fragilis, Cystopteris protrusa, Cystopteris reevesiana, and Cystopteris tenuis. Hybrids with C. fragilis have given rise to the allohexaploid species C. laurentiana. Hybrids with C. protrusa have given rise to the allotetraploid species C. tennesseensis. The hybrid with C. reevesiana has given rise to the allotetraploid species C. utahensis. The hybrid with C. tenuis is known as C. × illinoensis, an allotriploid. Also see Cystopteris hybrid complex.
Cystopteris bulbifera, with the common name bulblet fern, bulblet bladderfern, or bulblet fragile fern is a fern in the family Cystopteridaceae.
Cystopteris bulbifera ou Cystoptère bulbifère est une espèce de fougères de la famille des Dryopteridaceae et du genre Cystopteris.
Selon Tropicos (7 juin 2013)[1] (Attention liste brute contenant possiblement des synonymes) :
Cystopteris bulbifera ou Cystoptère bulbifère est une espèce de fougères de la famille des Dryopteridaceae et du genre Cystopteris.
Cystopteris bulbifera là một loài thực vật có mạch trong họ Woodsiaceae. Loài này được (L.) Bernh. miêu tả khoa học đầu tiên năm 1806.[2]
Cystopteris bulbifera là một loài thực vật có mạch trong họ Woodsiaceae. Loài này được (L.) Bernh. miêu tả khoa học đầu tiên năm 1806.
