Difference between revisions of "Hypericum tetrapetalum"
in J. Lamarck et al., Encycl. 4: 153. 1797.
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|name=Ascyrum amplexicaule | |name=Ascyrum amplexicaule | ||
|authority=Michaux | |authority=Michaux | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=A. cubense | |name=A. cubense | ||
|authority=Grisebach | |authority=Grisebach | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=A. tetrapetalum | |name=A. tetrapetalum | ||
|authority=(Lamarck) Vail | |authority=(Lamarck) Vail | ||
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|elevation=0–200 m | |elevation=0–200 m | ||
|distribution=Ala.;Fla.;Ga.;West Indies (w Cuba). | |distribution=Ala.;Fla.;Ga.;West Indies (w Cuba). | ||
| − | |discussion=<p>Hypericum tetrapetalum differs from H. crux-andreae in having broader leaves with strongly cordate-amplexicaul bases and, nearly always, by terminal pseudodichotomous inflorescences.</p> | + | |discussion=<p><i>Hypericum tetrapetalum</i> differs from <i>H. crux-andreae</i> in having broader leaves with strongly cordate-amplexicaul bases and, nearly always, by terminal pseudodichotomous inflorescences.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1797 | |publication year=1797 | ||
|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/V6/V6_141.xml |
|genus=Hypericum | |genus=Hypericum | ||
|section=Hypericum sect. Myriandra | |section=Hypericum sect. Myriandra | ||
Revision as of 17:46, 18 September 2019
Herbs (perennial) or shrubs, erect, with woody base, usually unbranched, sometimes with divaricate or ascending branches, 2–10 dm. Stems: internodes (2–)4-lined at first, then 2-lined to terete. Leaf blades oblong-ovate to ovate or triangular-ovate, 5–35 × 4–15 mm, base articulated, cordate-amplexicaul, margins subrecurved, apex apiculate or obtuse to rounded, midrib with 1 pair of branches. Inflorescences terminal, 1(–3)-flowered, branching from apical node pseudodichotomous, sometimes with relatively short branches from to 3 proximal nodes. Flowers 20–30 mm diam.; sepals persistent, enclosing capsule, 4, unequal, outer broadly ovate, 7–15 × 5.5–10 mm, apex subapiculate to obtuse, inner narrowly lanceolate, 7–15 × 2–3 mm, apex acute; petals 4, bright yellow, obovate-oblong, 10–15 mm; stamens persistent, 100; ovary 3-merous. Capsules broadly ellipsoid-ovoid to subglobose, 5–6 × 3.5–4 mm. Seeds not carinate, 0.7 mm; testa shallowly scalariform. 2n = 18.
Phenology: Flowering winter–spring (Jan–Apr), late summer (Jul–Sep).
Habitat: Moist, low pinelands, ditches
Elevation: 0–200 m
Distribution
Ala., Fla., Ga., West Indies (w Cuba).
Discussion
Hypericum tetrapetalum differs from H. crux-andreae in having broader leaves with strongly cordate-amplexicaul bases and, nearly always, by terminal pseudodichotomous inflorescences.
Selected References
None.