Saccolomataceae

Saccolomataceae is a family of ferns in the order Polypodiales. It has been formerly treated as part of the Dennstaedtiaceae, however it has been classified as its own family according to Smith et al. (2006)[2] The genus Saccoloma has been classified to include Orthiopteris, but the phylogeny of the group not yet fully understood.[3] The family includes a dozen known species.[4]

Saccolomataceae
Saccoloma elegans
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Class:	Polypodiopsida
Order:	Polypodiales
Suborder:	Saccolomatineae Hovenkamp
Family:	Saccolomataceae Doweld
Type species
Saccoloma elegans Kaulf.
Genus[1]
Saccoloma Kaulf.

Description

Saccolomataceae generally have the following characteristics: Terrestrial; rhizomes short-creeping to erect and trunk-like; petioles each with an omega-shaped vascular strand; blades pinnate to decompound and lacking articulate hairs; veins free; sori terminal on the veins; indusia pouch- or cup-shaped.[2]

Taxonomy

In 2016 the Pteridophyte Phylogeny Group placed it as the sole family in the Saccolomatineae, one of six suborders making up the Polypodiales order. These suborders are phylogenetically related as shown in this cladogram: [1]

Polypodiales	Saccolomatineae     Lindsaeineae         Pteridiineae       Dennstaedtiineae       Aspleniineae     Polypodiineae

Subdivision

Saccolomataceae is monogeneric for Saccoloma, with about 18 species.[1]

Distribution

Saccolomataceae is pantropical.

References

1. Pteridophyte Phylogeny Group 2016.
2. Smith et al 2006.
3. Christenhusz et al 2011.
4. Christenhusz & Byng 2016.

Bibliography

• Chase, Mark W.; Reveal, James L. (2009). "A phylogenetic classification of the land plants to accompany APG III". Botanical Journal of the Linnean Society. 161 (2): 122–127. doi:10.1111/j.1095-8339.2009.01002.x.CS1 maint: ref=harv (link)
• Christenhusz, M. J. M.; Zhang, X. C.; Schneider, H. (18 February 2011). "A linear sequence of extant families and genera of lycophytes and ferns". Phytotaxa. 19 (1): 7. doi:10.11646/phytotaxa.19.1.2.
• Christenhusz, Maarten J.M.; Chase, Mark W. (2014). "Trends and concepts in fern classification". Annals of Botany. 113 (4): 571–594. doi:10.1093/aob/mct299. PMC 3936591. PMID 24532607.CS1 maint: ref=harv (link)
• Christenhusz, Maarten JM & Byng, J. W. (2016). "The number of known plants species in the world and its annual increase". Phytotaxa. 261 (3): 201–217. doi:10.11646/phytotaxa.261.3.1.CS1 maint: ref=harv (link)
• Lehtonen, Samuli (2011). "Towards Resolving the Complete Fern Tree of Life". PLoS ONE. 6 (10): e24851. doi:10.1371/journal.pone.0024851. PMC 3192703. PMID 22022365.CS1 maint: ref=harv (link)
• Pryer, Kathleen M.; Schneider, Harald; Smith, Alan R.; Cranfill, Raymond; Wolf, Paul G.; Hunt, Jeffrey S.; Sipes, Sedonia D. (2001). "Horsetails and ferns are a monophyletic group and the closest living relatives to seed plants". Nature. 409 (6820): 618–622. doi:10.1038/35054555. PMID 11214320. S2CID 4367248.
• Pteridophyte Phylogeny Group (November 2016). "A community-derived classification for extant lycophytes and ferns". Journal of Systematics and Evolution. 54 (6): 563–603. doi:10.1111/jse.12229. S2CID 39980610.CS1 maint: ref=harv (link)
• Ranker, Tom A.; Haufler, Christopher H., eds. (2008). Biology and Evolution of Ferns and Lycophytes. Cambridge University Press. ISBN 978-0-521-87411-3.CS1 maint: ref=harv (link)
• Schneider, Harald; Schuettpelz, Eric; Pryer, Kathleen M.; Cranfill, Raymond; Magallón, Susana; Lupia, Richard (1 April 2004). "Ferns diversified in the shadow of angiosperms". Nature. 428 (6982): 553–557. doi:10.1038/nature02361. PMID 15058303.
• Schneider, Harald; Smith, Alan R.; Pryer, Kathleen M. (1 July 2009). "Is Morphology Really at Odds with Molecules in Estimating Fern Phylogeny?". Systematic Botany. 34 (3): 455–475. doi:10.1600/036364409789271209. S2CID 85855934.
• Smith, Alan R.; Kathleen M. Pryer; Eric Schuettpelz; Petra Korall; Harald Schneider; Paul G. Wolf (2006). "A classification for extant ferns" (PDF). Taxon. 55 (3): 705–731. doi:10.2307/25065646. JSTOR 25065646.
• Smith, Alan R.; Pryer, Kathleen M.; Schuettpelz, Eric; Korall, Petra; Schneider, Harald; Wolf, Paul G. Fern classification (PDF). pp. 417–467., in Ranker & Haufler (2008)