Hypericum edisonianum

(Small) W. P. Adams & N. Robson

Rhodora 63: 15. 1961.

Conservation concernEndemic
Basionym: Ascyrum edisonianum Small Man. S.E. Fl., 868, 1505. 1933
Treatment appears in FNA Volume 6. Treatment on page 86. Mentioned on page 74.

Shrubs, erect, sometimes unbranched proximal to inflorescence, 3–15 dm. Stems: internodes 4–6-lined at first, soon 2-lined. Leaf-blades elliptic, 15–26 × 5–8 (–11) mm, base not articulated, cuneate to subrounded, with glandlike auricles, margins subrecurved to subincrassate, apex obtuse to acute, midrib with to 4 pairs of branches. Inflorescences 1-flowered, branching from apical node repeatedly pseudodichotomous, without branches from proximal nodes. Flowers 15–20 mm diam.; sepals persistent, enclosing capsule, 4, unequal, outer broadly ovate, 8–17 × 5–9 mm, apex acute to subacuminate, inner linearlanceolate, 5–6 × 0.6–1.2 mm, apex acuminate; petals 4, bright-yellow, obovate, 10–18 mm; stamens persistent, 70–80; ovary 3–4-merous. Capsules narrowly pyramidal-ovoid, 5–8 × 3–4 mm. Seeds not carinate, 0.8 mm; testa reticulate.


Phenology: Flowering probably year-round.
Habitat: Marshy areas in pine flatwoods, pond margins
Elevation: 50 m

Distribution

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Fla.

Discussion

Of conservation concern.

Hypericum edisonianum differs from H. crux-andreae in the smaller, thicker, obtuse to acute leaves with glandlike auricles and the pseudodichotomously branched inflorescence.

Selected References

None.

Lower Taxa

None.
... more about "Hypericum edisonianum"
reddish +  and black +
yellow;orange +
oblong;ellipsoid +
acuminate;acute;subacuminate +
Norman K. B. Robson +
- Small W. P. Adams & N. Robson +
striate +  and smooth +
punctiform +
not articulated +
distinct +
cuneate +  and subrounded +
Ascyrum edisonianum +
0.5 cm5 mm <br />0.005 m <br /> - 0.8 cm8 mm <br />0.008 m <br /> +
pyramidal-ovoid +
0.3 cm3 mm <br />0.003 m <br /> - 0.4 cm4 mm <br />0.004 m <br /> +
connate +  and distinct +
1.5 cm15 mm <br />0.015 m <br /> - 2 cm20 mm <br />0.02 m <br /> +
Marshy areas in pine flatwoods, pond margins +
branching +  and 1-flowered +
axillary +  and terminal +
0.5 cm5 mm <br />0.005 m <br /> - 0.6 cm6 mm <br />0.006 m <br /> +
0.06 cm0.6 mm <br />6.0e-4 m <br /> - 0.12 cm1.2 mm <br />0.0012 m <br /> +
2-lined +  and 4-6-lined +
terete +  and angled +
0.8 cm8 mm <br />0.008 m <br /> - 1.1 cm11 mm <br />0.011 m <br /> +
1.5 cm15 mm <br />0.015 m <br /> - 2.6 cm26 mm <br />0.026 m <br /> +
glanduliferous +, petiolate +, pseudopetiolate +, subsessile +, sessile +, estipulate +  and simple +
persistent +  and deciduous +
glandular-ciliate +
0.8 cm8 mm <br />0.008 m <br /> - 1.7 cm17 mm <br />0.017 m <br /> +
0.5 cm5 mm <br />0.005 m <br /> - 0.9 cm9 mm <br />0.009 m <br /> +
incompletely axile +  and parietal +
glanduliferous +
contorted +  and imbricate +
bright-yellow +
deciduous +
distinct +
obovate +
1 cm10 mm <br />0.01 m <br /> - 1.8 cm18 mm <br />0.018 m <br /> +
Flowering probably year-round. +
not carinate +
0.8 cm8 mm <br />0.008 m <br /> - ? +
persistent +
connate +  and distinct +
unequal +
Conservation concern +  and Endemic +
persistent +
connate +  and distinct +
spreading;more or less appressed +
elongate +
Ascyrum +, Crookea +, Sanidophyllum +  and Sarothra +
Hypericum edisonianum +
Hypericum sect. Myriandra +
species +
scalariform +
reticulate +  and foveolate +
perennial +  and annual +
hairy +  and glabrous +
6 +, 9 +  and 7 +