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A Digital Herbarium

Spinulum annotinum: morphological plasticity

Posted by on Apr 9, 2017 in Cultivated, Lycophytes | 2 comments

Some years ago I collected some living Spinulum annotinum in Southern Sweden, in the vicinity of Göteborg-Landvetter airport.I planted it...

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Matteuccia struthiopteris (L.) Tod.

Posted by on Jan 19, 2015 in Cultivated | 0 comments

  A popular fern in cultivation in...

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Pentarhizidium orientale

Posted by on Dec 31, 2014 in Cultivated, Ferns, New Collections | 0 comments

In the October meeting of the New York Fern Society, Dr. John Mickel shared examples from his garden (which has ca. 150 species of...

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Helminthostachys zeylanica

Posted by on Dec 3, 2014 in Cultivated, Ferns | 3 comments

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Pellaea rotundifolia

Posted by on Nov 30, 2014 in Cultivated, Ferns, Observations | 0 comments

Pellaea rotundifolia is endemic to New Zealand. It is a popular house plant worldwide and was observed growing outdoors in California....

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Bommeria hispida

Posted by on Nov 29, 2014 in Cultivated, Ferns, Observations | 0 comments

Another beautiful cultivated species that I saw during my short trip to California. Bommeria is characterized by pedate, pentagonal...

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Regnellidium diphyllum

Posted by on Oct 29, 2014 in Cultivated, Featured Article, Ferns, Observations | 2 comments

When I traveled to California, the last fern that I was expecting to find outdoors was Regnellidium diphyllum, a narrow endemic species...

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Arachniodes simplicior

Posted by on Jan 14, 2014 in Cultivated, Ferns, Observations | 0 comments

Arachniodes simplicior is a commonly cultivated species that I recently found growing at the Zilker Botanical Garden in Austin, Texas. It...

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Matteuccia struthiopteris (strutbräken)

Posted by on Jan 7, 2014 in Cultivated, Ferns, Observations | 1 comment

Here you can see the sterile leaves of M. struthiopteris, a species that occurs in North America, Europe, and Asia. While taking these...

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Matteuccia struthiopteris

Posted by on Jan 7, 2014 in Cultivated, Ferns, New Collections | 0 comments

I am back in New York after spending 10 wonderful days with my family in Brazil. In contrast to temperatures above 30 C and lots of...

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Cyrtomium falcatum

Posted by on Dec 20, 2013 in Cultivated, Ferns, Observations | 4 comments

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