Trillium pusillum var. virginianum

Fernald

Rhodora 45: 397, plate 773, figs. 1, 2. 1943.

Endemic
Synonyms: Trillium virginianum (Fernald) C. F. Reed
Treatment appears in FNA Volume 26. Treatment on page 102. Mentioned on page 96.

Flower sessile or subsessile; pedicel, if present, 0.1–0.3 cm.


Phenology: Flowering spring (Mar–early May).
Habitat: Acidic soils in low, swampy woodlands along streams, red maple (Acer rubrum) swamps, very wet in spring, plants often grouped on hummocks, possibly with sphagnum moss
Elevation: 0–300 m

Discussion

The flowers of var. virginianum are usually slightly smaller than those of var. pusillum and otherwise very similar. The name virginianum indicates the main area of occurrence, and this is the only variety found in the tidewater area, where it is frequent around Williamsburg. It can also be found in the Delmarva Peninsula.

Selected References

None.

Lower Taxa

None.

"thicker" is not a number."broad" is not a number."thin" is not a number.No values specified."compressed-shortened" is not a number. "elongated" is not a number."thin" is not a number."dm" is not declared as a valid unit of measurement for this property."thicker" is not a number.

0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
yellow +  and pale lavender +
versatile +  and dorsifixed +
more or less equaling or longer +
cordate +  and linear +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
obtuse +  and strongly rounded +
obtuse;weakly acute +
Frederick W. Case Jr. +
Fernald +
whorled +, opposite +  and alternate +
dilated +
reticulate-veined +  and parallel-veined +
not mottled +  and dark green with maroon +
sessile +, subsessile +  and short-petiolate +
mottled +  and green +
1;several +
obovate;elliptical +
tunicate +  and scaly +
thin-walled +
not extended +
Md. +, N.C. +, Va. +  and W.Va. +
yellowish +  and white +
0–300 m +
pinkish purple +  and white +
more or less equaling or slightly shorter +
connate-coroniform +  and dilated +
subsessile +  and sessile +
odorless +
unisexual +  and bisexual +
baccate +  and capsular +
pale greenish;white +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
not juicy +  and moist +
Acidic soils in low, swampy woodlands along streams, red maple (Acer rubrum) swamps, very wet in spring, plants often grouped on hummocks, possibly with sphagnum moss +
paired +, paniculate +  and racemose +
persistent +
long-spreading +
thread-like +
conspicuous +
6-angled;ovoid +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
many;several +
stiffly erect +  and leaning +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
zygomorphic +  and actinomorphic +
rosy pink +  and white +
distinct +
recurved +  and spreading-ascending +
clawed;obovate;linear +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
thin-textured +
Flowering spring (Mar–early May). +
parietal +  and axile +
6-lobed +  and 3-lobed +
subterranean +
straight +
erect +  and arising +
slender +
wind-distributed +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
alternating +
dark green with maroon +
persistent +
distinct +
conspicuous +
oblong-lanceolate +, spreading +  and plane +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
divergent +  and alternating +
adnate +  and free +
erect-spreading +
staminodial +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
with very short style +, sessile +  and twisted +
greenish white +  and white +
persistent +
erect +  and spreading +
3 +  and 1 +
Trillium virginianum +
sessile +  and subsessile +
Trillium pusillum var. virginianum +
Trillium pusillum +
variety +
connate +  and distinct +
sepaloid +  and petaloid +
narrower +
2.5 cm25 mm <br />0.025 m <br /> (8 cm80 mm <br />0.08 m <br />) +
not engraved +
oblong;lanceolate-obtuse +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
rhizomatous +  and scapose +
3 +  and 2 +