Styrax platanifolius subsp. platanifolius

Common names: Sycamore-leaf snowbell
Treatment appears in FNA Volume 8. Treatment on page 344. Mentioned on page 343.

Young twigs glabrous except for scattered orangebrown or dark-brown, stalked, stellate hairs proximally. Leaf-blades: margins often irregularly undulate, usually weakly 3-lobed or coarsely toothed, sometimes entire, surfaces glabrous except for scattered orangebrown or dark-brown, stalked, stellate hairs abaxially on some leaves, surface easily visible. Pedicels glabrous. Flowers: calyx glabrous, margins and teeth densely glandular, at least some teeth to 1 mm; style pubescent from proximal end to 15–35% of total length.


Phenology: Flowering Apr–May; fruiting Jul–Sep.
Habitat: Dry, wooded bottomlands, rocky banks and ledges
Elevation: 200-700 m

Discussion

Subspecies platanifolius is historically the most widespread of the three subspecies of Styrax platanifolius in Texas; it is now apparently extremely rare throughout its range.

Selected References

None.

Lower Taxa

None.

"lengthofcorolla" is not declared as a valid unit of measurement for this property."-2.3timesaslongascalyx" is not declared as a valid unit of measurement for this property.

nearly +  and distinct +
perigynous;epigynous +
Peter W. Fritsch +
Engelmann ex Torrey +
indistinct +
9 cm90 mm <br />0.09 m <br /> (12 cm120 mm <br />0.12 m <br />) +
9 cm90 mm <br />0.09 m <br /> (11.5 cm115 mm <br />0.115 m <br />) +
4.5 cm45 mm <br />0.045 m <br /> (9 cm90 mm <br />0.09 m <br />) +
ovate;depressed-orbiculate +
4.2 cm42 mm <br />0.042 m <br /> (9 cm90 mm <br />0.09 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
grayish white +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
stellate-pubescent +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Sycamore-leaf snowbell +
subinduplicate-valvate +  and imbricate +
1.2 cm12 mm <br />0.012 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
200-700 m +
curved +  and straight +
solitary +  and 2-7-flowered +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
not winged +, nutlike +, 3-valved +  and capsular +
loculicidal +
ellipsoid;globose +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Dry, wooded bottomlands, rocky banks and ledges +
dark-brown +, orangebrown +  and scattered +
conspicuous +
5 (?) +  and 6 (?) +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
toothed +, 3-lobed +  and undulate +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
perigynous;epigynous +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Apr–May +  and fruiting Jul–Sep. +
connate +, distinct +  and free +
Smithsonian Contr. Knowl. +
ellipsoid;globose +
2(-4) times number of corolla lobes +
2-4[-5]-lobed +  and truncate +
Styrax platanifolius subsp. platanifolius +
Styrax platanifolius +
subspecies +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
shrub +  and not suckering +