Hypericum suffruticosum

W. B. Adams & N. Robson

Rhodora 63: 15. 1961.

Endemic
Basionym: Ascyrum pumilum Michaux Fl. Bor.-Amer. 2: 77. 1803,
Synonyms: A. pauciflorum Nuttall
Treatment appears in FNA Volume 6. Treatment on page 86. Mentioned on page 74.

Shrubs, erect and branched from near base, forming cushion, or decumbent and matted, 0.5–2 dm. Stems: internodes 4-lined at first, soon 2-winged. Leaf-blades elliptic or oblong-linear to narrowly obovate or oblanceolate, 3–10 × 1–3 mm, base not articulated, rounded to cuneate, without glandlike auricles, margins plane to subrecurved, apex obtuse, midrib unbranched. Inflorescences 1-flowered, often with pseudodichotomous branches from apical node, without proximal branches; pedicels mostly recurved to reflexed in fruit, bracteoles proximal. Flowers 10–15 mm diam.; sepals persistent, enclosing capsule, (2 or) 4, unequal, outer broadly ovate to broadly elliptic, 4–8 × 4–8 mm, apex obtuse to rounded, inner none or minute; petals 4, pale-yellow, narrowly obovate, often unequal, 4–8 mm; stamens persistent, 30; ovary 2-merous. Capsules cylindric-ellipsoid, 3–5 × 2–3 mm. Seeds scarcely carinate, 1 mm; testa finely reticulate. 2n = 18.


Phenology: Flowering spring–early summer (Mar–Jun).
Habitat: Dry, open, sandy pinelands, coastal plain
Elevation: 0–200 m

Distribution

V6 143-distribution-map.jpg

Ala., Fla., Ga., La., Miss., N.C., S.C.

Discussion

Hypericum suffruticosum is near the “cuneifolium” form of H. crux-andreae; it differs, among other things, by the two-merous ovary, the relatively small or absent inner sepals, the pedicels recurved or reflexed in fruit, and the cushion or matted habit.

Selected References

None.

Lower Taxa

None.
... more about "Hypericum suffruticosum"
reddish +  and black +
yellow;orange +
oblong;ellipsoid +
obtuse;rounded +
Norman K. B. Robson +
W. B. Adams & N. Robson +
striate +  and smooth +
punctiform +
not articulated +
distinct +
rounded +  and cuneate +
Ascyrum pumilum +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cylindric-ellipsoid +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Ala. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +  and S.C. +
0–200 m +
connate +  and distinct +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Dry, open, sandy pinelands, coastal plain +
axillary +  and terminal +
2-winged +  and 4-lined +
terete +  and angled +
oblong-linear to narrowly obovate or oblanceolate +  and elliptic +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
glanduliferous +, petiolate +, pseudopetiolate +, subsessile +, sessile +, estipulate +  and simple +
persistent +  and deciduous +
glandular-ciliate +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
broadly ovate +  and broadly elliptic +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
incompletely axile +  and parietal +
mostly recurved;reflexed +
glanduliferous +
contorted +  and imbricate +
pale-yellow +
deciduous +
distinct +
obovate +
unequal +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering spring–early summer (Mar–Jun). +
carinate +
1 cm10 mm <br />0.01 m <br /> (?) +
persistent +
connate +  and distinct +
unequal +
persistent +
connate +  and distinct +
spreading;more or less appressed +
elongate +
A. pauciflorum +
Hypericum suffruticosum +
Hypericum sect. Myriandra +
species +
scalariform +
reticulate +  and foveolate +
perennial +  and annual +
shrub +  and matted +
hairy +  and glabrous +
6 +, 9 +  and 7 +