Hypericum mutilum subsp. latisepalum

(Fernald) N. Robson

Bull. Brit. Mus. (Nat. Hist.), Bot. 20: 119. 1990.

Endemic
Basionym: Hypericum mutilum var. latisepalum Fernald Rhodora 38: 372. 1936
Treatment appears in FNA Volume 6. Treatment on page 94.

Stems: apical internode usually longer than adjacent one. Leaf-blades broadly ovate or broadly oblong-ovate to suborbiculate. Inflorescences: branching from 1–4 (–6) nodes, branches diffuse and repeatedly monochasial distally. Sepals ± imbricate, broader beyond middle.


Phenology: Flowering late spring–early summer (Apr–Jun).
Habitat: Ditches, marshes, lake margins, desiccated temporary pools
Elevation: 0–200 m

Distribution

V6 159-distribution-map.jpg

Fla., Ga., N.J., S.C., Tex.

Discussion

Fernald recorded subsp. latisepalum from New Jersey; D. H. Webb (1980) did not record it north of South Carolina. No specimens have been seen from farther north than Georgia, where it appears to tend morphologically toward subsp. mutilum.

Selected References

None.

Lower Taxa

None.

No values specified."broader" is not a number.

reddish +  and black +
yellow;orange +
oblong;ellipsoid +
not setulose-ciliate +  and ciliate +
2mm;4.5mm +
usually acute;apiculate +
unequal +
0.6mm +  and 1.5mm +
usually longer than adjacent one +
Norman K. B. Robson +
(Fernald) N. Robson +
striate +  and smooth +
punctiform +
distinct +
Hypericum mutilum var. latisepalum +
2.7 cm27 mm <br />0.027 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
elliptic-oblong ovate or suborbiculate +  and elliptic or lanceolate +
papery +  and membranous +
0.1 cm1 mm <br />0.001 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
linear-subulate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
narrowly ovoid;cylindric-ellipsoid +
Fla. +, Ga. +, N.J. +, S.C. +  and Tex. +
0–200 m +
connate +  and distinct +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Ditches, marshes, lake margins, desiccated temporary pools +
axillary +  and terminal +
winged +, 6-lined +, 4-lined +  and 2-lined +
broadly oblong-ovate;suborbiculate +
amplexicaul +  and sessile +
persistent +  and deciduous +
not setulose-ciliate +  and ciliate +
0.2 cm2 mm <br />0.002 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
glandular-ciliate +
usually acute +  and apiculate +
unequal +
0.6mm;1.5mm +
(2-)3(-4)-merous +
axile +  and parietal +
distal;middle +
glanduliferous +
contorted +  and imbricate +
pale-yellow +
persistent +
distinct +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Flowering late spring–early summer (Apr–Jun). +
Bull. Brit. Mus. (Nat. Hist.), Bot. +
interrupted +  and continuous +
not carinate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (?) +  and 0.07 cm0.7 mm <br />7.0e-4 m <br /> (?) +
persistent +
connate +  and distinct +
obtuse;rounded +
persistent +
clavate +  and capitate +
expanded +  and minute +
connate +  and distinct +
elongate +
0.5 cm5 mm <br />0.005 m <br /> (?) +
Sarothra mutila +
Hypericum mutilum subsp. latisepalum +
Hypericum mutilum +
subspecies +
linear-scalariform +
reticulate +  and foveolate +
perennial +  and annual +
hairy +  and glabrous +
6 +, 9 +  and 7 +