Difference between revisions of "Asplenium ×heteroresiliens"
Amer. Fern J. 56: 12, plate 3. 1966.
FNA>Volume Importer |
FNA>Volume Importer |
||
| Line 23: | Line 23: | ||
|elevation=0–100 m | |elevation=0–100 m | ||
|distribution=Fla.;N.C.;S.C. | |distribution=Fla.;N.C.;S.C. | ||
| − | |discussion=<p>V. M. Morzenti (1966) studied the cytology and morphology of Asplenium × heteroresiliens and found it to be a pentaploid (5 x) of hybrid origin between A. resiliens (3 x) and A. heterochroum (4 x). The hybrid is intermediate in morphology between the parents, and it is difficult to separate from them. Misshapen spores mixed with large globose spores can usually be found on the same specimen.</p> | + | |discussion=<p>V. M. Morzenti (1966) studied the cytology and morphology of <i>Asplenium</i> × <i>heteroresiliens</i> and found it to be a pentaploid (5 x) of hybrid origin between <i>A. resiliens</i> (3 x) and <i>A. heterochroum</i> (4 x). The hybrid is intermediate in morphology between the parents, and it is difficult to separate from them. Misshapen spores mixed with large globose spores can usually be found on the same specimen.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
| Line 46: | Line 46: | ||
|publication year=1966 | |publication year=1966 | ||
|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/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V2/V2_11.xml |
|genus=Asplenium | |genus=Asplenium | ||
|species=Asplenium ×heteroresiliens | |species=Asplenium ×heteroresiliens | ||
Revision as of 15:45, 18 September 2019
Roots not proliferous. Stems erect, rarely branched; scales black throughout, linear-lanceolate, 1–3.5 × 0.1–0.4 mm, margins entire. Leaves monomorphic. Petiole black or purplish black throughout, lustrous, 1–2 cm, 1/5–1/10 length of blade; indument of black filiform scales at base. Blade linear to narrowly oblanceolate, 1-pinnate throughout, 5–15 × 1–2 cm, thick, glabrous; base gradually tapered, apex acute, not rooting. Rachis black or purplish black throughout, lustrous, glabrous or with a few scattered scales. Pinnae in 12–30 pairs, oblong to quadrangular; medial pinnae 5–10 × 2–3 mm; base with slight or prominent acroscopic auricle and often with basiscopic auricle; margins usually shallowly crenulate, rarely ± entire; apex acute to obtuse. Veins free, obscure. Sori 1–5 pairs per pinna, on both basiscopic and acroscopic sides. Spores 32 per sporangium. n = 2n = 180 (apogamous).
Habitat: Limestone rocks
Elevation: 0–100 m
Distribution
Fla., N.C., S.C.
Discussion
V. M. Morzenti (1966) studied the cytology and morphology of Asplenium × heteroresiliens and found it to be a pentaploid (5 x) of hybrid origin between A. resiliens (3 x) and A. heterochroum (4 x). The hybrid is intermediate in morphology between the parents, and it is difficult to separate from them. Misshapen spores mixed with large globose spores can usually be found on the same specimen.
Selected References
None.