John Spence

American botanist and bryologist (born 1956).

Abbreviations: J.R.Spence
Occupations: bryologist, botanist, botanical collector
Citizenships: United States
Dates: 1956-00-00T00:00:00Z
Direct attributions: 153 plants, 0 fungi
Authorship mentions: 154 plants, 0 fungi

153 plants attributed, 1 plant contributed to154 plants:

Rosulabryum billarderii (Rosulabryum Billarderi) (Schwägr.) J.R.Spence 1996
plant species in the bryaceae family
Rosulabryum billardierei is a medium-sized moss species that was previously classified as Bryum billardierei before being reassigned to the genus Rosulabryum. The specific epithet has been subject to spelling variation with billardierei, billarderi, and billarderii all considered acceptable forms in literature.
Rosulabryum capillare (Capillary Thread-moss) (Hedw.) J.R.Spence 1996
plant species in the bryaceae family
Rosulabryum capillare (formerly Bryum capillare) is a species of moss in the Bryaceae family. It has cosmopolitan distribution and is known by the common name capillary threadmoss. Rosulabryum capillare can use artificial light to grow in places that are otherwise devoid of natural light, such as Crystal Cave in Wisconsin.
Ptychostomum pseudotriquetrum (Long-leaved Thread Moss) (Hedw.) J.R. Spence & H.P. Ramsay 2006
plant species in the bryaceae family
Ptychostomum pseudotriquetrum, commonly known as marsh bryum, is a species of moss belonging to the family Bryaceae. It is distinguished by its strongly decurrent leaves that extend down the stem, central leaf stalks which may extend slightly beyond the tip of the leaf, dioicy, and long stems densely matted with rhizoids. It is found worldwide, excluding the tropics.
Rosulabryum subtomentosum (Hampe ex A.Jaeger) J.R.Spence 2006
plant species in the bryaceae family
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Rosulabryum J.R.Spence 1996
plant genus in the bryaceae family
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Bryum calobryoides (Beautiful Bryum) J.R.Spence 1987
plant species in the bryaceae family
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Brachydontium olympicum (Olympic Brachydontium Moss) (E.Britton) T.T.McIntosh & J.R.Spence 1987
plant species in the ptychomitriaceae family
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Rosulabryum wightii (Mitt.) J.R.Spence 1996
plant species in the bryaceae family
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Rosulabryum torquescens (Bruch & Schimp.) J.R.Spence 1996
plant species in the bryaceae family
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Rosulabryum subfasciculatum (Hampe) J.R.Spence 1996
plant species in the bryaceae family
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Rosulabryum queenslandicum J.R.Spence & H.P.Ramsay 1999
plant species in the bryaceae family
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Rosulabryum microrhodon (Müll.Hal.) J.R.Spence 1996
plant species in the bryaceae family
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Rosulabryum leptothrix (Müll.Hal.) J.R.Spence 1996
plant species in the bryaceae family
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Rosulabryum lamingtonicum J.R.Spence & H.P.Ramsay 1999
plant species in the bryaceae family
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Rosulabryum epiphyticum J.R.Spence & H.P.Ramsay 1999
plant species in the bryaceae family
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Rosulabryum campylothecium (Taylor) J.R.Spence 1996
plant species in the bryaceae family
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Rosulabryum albolimbatum (Hampe ex A.Jaeger) J.R.Spence 1996
plant species in the bryaceae family
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Racomitrium pacificum (Pacific Racomitrium Moss) Ireland & J.R.Spence 1925
plant species in the grimmiaceae family
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Anomobryum subrotundifolium (A.Jaeger) J.R.Spence & H.P.Ramsay
plant species in the bryaceae family
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Ptychostomum funkii (Schwägr.) J.R.Spence 2007
plant species in the bryaceae family
Ptychostomum funkii is a species of moss belonging to the family Bryaceae.
Imbribryum miniatum (Glossy Red Bryum Moss) (Lesq.) J.R.Spence 2007
plant species in the bryaceae family
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Imbribryum mildeanum (Jur.) J.R.Spence 2007
plant species in the bryaceae family
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Gemmabryum dichotomum (Hedw.) J.R.Spence & H.P.Ramsay 2005
plant species in the bryaceae family
Gemmabryum dichotomum is a species of moss belonging to the family Bryaceae. It is distributed throughout temperate regions of both hemispheres, as well as in Antarctic tundra.
Gemmabryum J.R.Spence & H.P.Ramsay 2005
plant genus in the bryaceae family
Gemmabryum is a genus of moss in the family Bryaceae. It was separated from the genera Bryum and Brachymenium in 2005. It has been argued that the correct name for the genus is Osculatia.
Rosulabryum rubens (Mitt.) J.R.Spence 2009
plant species in the bryaceae family
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Rosulabryum flaccidum (Brid.) J.R.Spence 2007
plant species in the bryaceae family
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Rosulabryum erythroloma (Kindb.) J.R.Spence 2009
plant species in the bryaceae family
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Rosulabryum bornholmense (Wink. & R.Ruthe) J.R.Spence 2009
plant species in the bryaceae family
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Rosulabryum andersonii (H.A.Crum) J.R.Spence 2009
plant species in the bryaceae family
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Ptychostomum wrightii (Wright's Bryum) (Sull. & Lesq.) J.R.Spence 2005
plant species in the bryaceae family
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