Difference between revisions of "Cyrtomium"
Tent. Pterid. 86. 1836.
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--><p>Species ca. 15 (2 in the flora).</p> | --><p>Species ca. 15 (2 in the flora).</p> | ||
|tables= | |tables= | ||
| − | |references= | + | |references={{Treatment/Reference |
| + | |id=ching1936a | ||
| + | |text=Ching, R. C. 1936. On the genus Cyrtomium Presl. Bull. Chin. Bot. Soc. 2: 85--106. | ||
| + | }}{{Treatment/Reference | ||
| + | |id=christensen1930a | ||
| + | |text=Christensen, C. 1930. The genus Cyrtomium. Amer. Fern J. 20: 41--52. | ||
| + | }}{{Treatment/Reference | ||
| + | |id=shing1965a | ||
| + | |text=Shing, K. H. 1965. A taxonomical study of the genus Cyrtomium Presl. Acta Phytotax. Sin., Addit. 1: 1--48. | ||
| + | }} | ||
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|family=Dryopteridaceae | |family=Dryopteridaceae | ||
|distribution=North America;Asia;Africa including Madagascar;Pacific Islands (Hawaii). | |distribution=North America;Asia;Africa including Madagascar;Pacific Islands (Hawaii). | ||
| − | |reference= | + | |reference=ching1936a;christensen1930a;shing1965a |
|publication title=Tent. Pterid. | |publication title=Tent. Pterid. | ||
|publication year=1836 | |publication year=1836 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V2/V2_578.xml |
|genus=Cyrtomium | |genus=Cyrtomium | ||
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-->[[Category:Treatment]][[Category:Dryopteridaceae]] | -->[[Category:Treatment]][[Category:Dryopteridaceae]] | ||
Revision as of 20:51, 16 December 2019
Plants terrestrial or on rock. Stems erect or ascending, stolons absent. Leaves monomorphic, evergreen. Petiole ± 1/2–3/4 length of blade, base not swollen; vascular bundles more than 3, arranged in arc, ± round in cross section. Blade oblong-lanceolate, 1-pinnate with pinnae not lobed, distal pinnae only slightly smaller, blade ending in basally lobed pinna ± similar to lateral pinnae, papery or somewhat leathery. Pinnae not articulate to rachis, segment margins crenate to spinulose, sometimes also coarsely dentate; proximal pinnae not reduced, petiolulate, equilateral or somewhat inequilateral with acroscopic base more developed; costae adaxially grooved, grooves continuous from rachis to costae; indument of filiform scales abaxially, absent adaxially. Veins elaborately anastomosing, areoles formed with 1–3 included veinlets. Sori in 2 or more rows between midrib and margin, round. Indusia peltate, persistent or caducous. Spores brown, with inflated folds or wings. x = 41.
Distribution
North America, Asia, Africa including Madagascar, Pacific Islands (Hawaii).
Discussion
This difficult genus requires further systematic study. Estimates of species numbers have ranged from 9 (C. Christensen 1930) to 59 (Shing K. H. 1965). The group might better be considered a subgenus of Polystichum, from which it is poorly differentiated morphologically.
Species ca. 15 (2 in the flora).
Selected References
Lower Taxa
Key
| 1 | Pinnae 4-10(-12) pairs, leathery, shiny adaxially, margins sometimes undulate or coarsely dentate, but not minutely crenulate or denticulate. | Cyrtomium falcatum |
| 1 | Pinnae (8-)10-25 pairs, papery, not shiny adaxially, margins minutely crenulate-denticulate. | Cyrtomium fortunei var. fortunei |