Biology:Acrosorus
| Acrosorus | |
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_Copel.(MNHN_P01572414).jpg)
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| Pressed specimens of Acrosorus streptophyllus | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Suborder: | Polypodiineae |
| Family: | Polypodiaceae |
| Subfamily: | Grammitidoideae |
| Genus: | Acrosorus Copel.[1] |
| Type species | |
| Acrosorus exaltatus (Copel.) Copel.[2]
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| Species | |
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See text. | |
Acrosorus is a genus of ferns in the family Polypodiaceae, subfamily Grammitidoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I).[2] It is known from the Philippines, Malesia, Thailand, and the Pacific islands.
Description
Members of the genus have radially symmetric (rather than flattened) rhizomes, covered with hairless scales of uniform color.[3]
Their leaves may be partly cut, into lobes, or fully divided into pinnae. Their veins are at most a few times forked, and lack hydathodes.[3] Each lobe or pinna of a fertile leaf bears a single sorus near the tip;[4] the edges of the lobes or pinnae are rolled under and fused near the tip to protect the sorus.[3][4] Leaf hairs may be single setae (bristles), single catenate hairs (consisting of chains of cells), or branched catenate hairs, with setae for branches.[3]
Taxonomy
The genus was created by Edwin Copeland in 1906, to accommodate a group of ferns similar to Prosaptia and until then classified in Davallia.[4]
Species
(As of February 2020), the Checklist of Ferns and Lycophytes of the World accepted the following species:[1]
- Acrosorus friderici-et-pauli (Christ) Copel.
- Acrosorus grammitidiphyllus (Copel.) Parris
- Acrosorus pectinatus Parris
- Acrosorus reineckei (Christ) Copel.
- Acrosorus schlechteri Christ
- Acrosorus sclerophyllus (Alderw.) Parris
- Acrosorus streptophyllus (Baker) Copel.
- Acrosorus subtriangularis (Alderw.) Parris
- Acrosorus tenuis Parris
- Acrosorus vallatus Parris
References
- ↑ 1.0 1.1 Hassler, Michael; Schmitt, Bernd (January 2020), "Acrosorus", Checklist of Ferns and Lycophytes of the World, Version 8.20, https://worldplants.webarchiv.kit.edu/ferns/, retrieved 2020-02-18
- ↑ 2.0 2.1 PPG I (2016), "A community-derived classification for extant lycophytes and ferns", Journal of Systematics and Evolution 54 (6): 563–603, doi:10.1111/jse.12229
- ↑ 3.0 3.1 3.2 3.3 Parris, Barbara S (2018). "The Flora Malesiana account of grammitid ferns (Polypdiaceae): a progress report with an illustrated synoptic key to Malesian genera". Sibbaldia (16): 25–27. https://journals.rbge.org.uk/index.php/rbgesib/article/viewFile/245/193.
- ↑ 4.0 4.1 4.2 Copeland, Edwin (1906). "New Philippine Ferns". Philippine Journal of Science 1 supp. 2: 158. https://www.biodiversitylibrary.org/page/695262.
Wikidata ☰ Q5656847 entry
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