Abstract
The genus Zygodon Hook. & Taylor is revised for southern South America (Andean-Patagonian and Fuegian regions). Thirteen taxa (twelve species and one variety) are recognized as occurring in the region: Z. bartramioides Malta, Z. chilensis Calabrese & F. Lara, Z. hookeri Hampe var. hookeri, Z. hookeri var. leptobolax (Müll. Hal.) Calabrese comb. nov., Z. intermedius Bruch & Schimp., Z. jaffuelii Thér., Z. magellanicus Dusén ex Malta, Z. menziesii (Schwägr.) Arnott, Z. papillatus Mont., Z. pentastichus (Mont.) Müll. Hal., Z. pichinchensis (Taylor) Mitt., Z. reinwardtii (Hornsch.) Bruch & Schimp. and Z. obtusifolius Hook. All taxa previously considered to grow in southern South America were studied, and many were typified. Because of the biogeographical connections with other Southern Hemisphere landmasses, some taxa from other areas (e.g., Australasia or South Africa) were also considered. The studied taxa are a good representation of the genus as a whole, thus allowing one to conclude that Zygodon, worldwide, consists of three subgenera: subg. Zygodon, the species of which have papillose leaf cells that are flat as seen in cross-section, and that can be further divided in two sections, sect. Zygodon defined by leaf basal cells not in differentiated bands and seta distally dextrorse, and sect. Stenomitrium Mitt. with leaf basal cells disposed in differentiated alternating bands and seta distally sinistrorse; subg. Codonoblepharon (Schwägr.) Calabrese stat. nov. comprising species with smooth, flat leaf cells in cross-section; and subg. Obtusifolium (Malta) Calabrese stat. nov., including species with papillose, bulging leaf cells. For each of the accepted taxa, keys, descriptions, illustrations, a complete list of synonyms previously used in the study area (sometimes expanded with names from abroad), ecology, distribution maps, variability and differentiation from related taxa are provided. Study of the peristome of Zygodon with the SEM provides new data about its structure and ornamentation.
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Claims 8
Claim · model-written summary
Thirteen Zygodon taxa were recognized in southern South America.
- Outcome
- taxa (twelve species and one variety) are recognized as occurring in the regione0
- Value
- Thirteen taxae0
- Setting
- southern South Americae0
_9154.JPG?width=60){kind=small}
ZygodonOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
_9154.JPG?width=500)
Verbatim
e0“The genus Zygodon Hook. & Taylor is revised for southern South America (Andean-Patagonian and Fuegian regions). Thirteen taxa (twelve species and one variety) are recognized as occurring in the region”
Claim · model-written summary
Zygodon was divided worldwide into three subgenera.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zygodon, worldwide, consists of three subgenera: subg. Zygodon, the species of which have papillose leaf cells that are flat as seen in cross-section, and that can be further divided in two sections, sect. Zygodon defined by leaf basal cells not in differentiated bands and seta distally dextrorse, and sect. Stenomitrium Mitt. with leaf basal cells disposed in differentiated alternating bands and seta distally sinistrorse; subg. Codonoblepharon (Schwägr.) Calabrese stat. nov. comprising species with smooth, flat leaf cells in cross-section; and subg. Obtusifolium (Malta) Calabrese stat. nov., including species with papillose, bulging leaf cells.”
Claim · model-written summary
Subgenus Zygodon has papillose, flat leaf cells.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subg. Zygodon, the species of which have papillose leaf cells that are flat as seen in cross-section”
Claim · model-written summary
Section Zygodon has undifferentiated leaf basal cells and a distally dextrorse seta.
- Material
- sect. Zygodone0
- Outcome
- leaf basal cells not in differentiated bands and seta distally dextrorsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sect. Zygodon defined by leaf basal cells not in differentiated bands and seta distally dextrorse”
Claim · model-written summary
Section Stenomitrium has differentiated alternating basal cell bands and a sinistrorse seta.
- Material
- sect. Stenomitrium Mitt.e0
- Outcome
- leaf basal cells disposed in differentiated alternating bands and seta distally sinistrorsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sect. Stenomitrium Mitt. with leaf basal cells disposed in differentiated alternating bands and seta distally sinistrorse”
t0“Zygodon”
Claim · model-written summary
Subgenus Codonoblepharon was assigned smooth, flat leaf cells.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subg. Codonoblepharon (Schwägr.) Calabrese stat. nov. comprising species with smooth, flat leaf cells in cross-section”
t0“Zygodon”
Claim · model-written summary
Subgenus Obtusifolium was assigned papillose, bulging leaf cells.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subg. Obtusifolium (Malta) Calabrese stat. nov., including species with papillose, bulging leaf cells”
t0“Zygodon”
Claim · model-written summary
SEM study provided new data on Zygodon peristome structure and ornamentation.
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Study of the peristome of Zygodon with the SEM provides new data about its structure and ornamentation.”