2010.06.13 Lower Austria, Hollabrunn/Thaya National Park (300 m AMSL).Rare, that is if ID is correct.Sporangia in july/august.German name: Grnspitz-Streifenfarn (?!)ID: Fischer & al., Exkursionsflora (2008 3rd): ID is provisional as sporangia weren't developped yet and as young plants of Asplenium trichomanes show stems which are green at the tip (and will grow brown later) while those of A. adulterinum have green-tipped stems even on adult plants; I will try and back up ID through visiting the same place later this year - as A. adulterinum only grows on serpentine and magnesite this species is rather rare but the green tip still balances ID towards this species.
On a bank in forest north of Casadero along the road to the Cedars but not in the serpentine area (Sonoma County, California, US). This is a fairly dissected form of P. californicum but is not dissected enough to be P. dudleyi and has narrower fronds than that species. Image I12-0437, Feb. 4th 2012.
Kauai digit fernPteridaceae (Maidenhair fern family)Endemic the the Hawaiian Islands (Kauai only)IUCN: Critically EnangeredKauai (Cultivated)Underside of frond showing the sori.Frondwww.flickr.com/photos/dweickhoff/5490701911/in/photostream/
kupukupu or niaaniau Lomariopsidaceae [Nephrolepidaceae] (Swordfern family)Subspecies is endemic to the Hawaiian Islands (All main islands except Niihau)Palikea, Waianae Mountains, OahuThe native Hawaiian version of the "Boston fern."Early Hawaiians fashioned the fronds into lei for the wrists and ankles called kpee or as haku for the head.The fern was used medicinally to treat a number of skin disordes by means of bathing in the processed juice.The Hawaiian name kupu means "to sprout." The early Hawaiians would place kupukupu on hula altars so that knowledge would sprout.EtymologyThe generic name Nephrolepis is derived from the Greek nephros, kidney, and lepis, scale, in reference to the kidney-shaped indusia (sori covering).The Latin specific name exaltata, raised, high, lofty, alludes to the upright fronds of this fern.The former subspecies name hawaiiensis* is referring to the place of origin, Hawaii._____* No longer considered as an endemic subspecies. Status is currently as indigenous.NPH00001nativeplants.hawaii.edu/plant/view/Nephrolepis_exaltata_h...
2010.04.25 Austria, Lower Austria, districts Baden/Wiener Neustadt Land (Steinwandklamm, a narrow chine with high humility; 640 m AMSL).See also remarks on sori.German name: Grn-StreifenfarnID: Fischer & al., Exkursionsflora (2008 3rd)