Schoenolirion wrightii

Sherman

SouthW. Naturalist 24: 125. 1979.

Endemic
Treatment appears in FNA Volume 26. Treatment on page 313. Mentioned on page 307.

Plants with prominent bulbs at tops of vertical rootstocks; bulbs ovoid to elongate, to 17 mm diam. Leaves 2–7, 14–34 cm × 2–6 mm, not withering to persistent fibers; blade flattened or somewhat keeled, usually shorter than scape and inflorescence, base fleshy. Inflorescences seldom branched; bracts mostly lanceolate-acuminate, sometimes ovate-obtuse. Flowers: tepals seldom strongly recurved, white, each with green abaxial stripe, mostly 3 (–5) -veined, ovate to ovatelanceolate, 4.4–6.5 mm, apex obtuse; ovary and style green. 2n = 24.


Phenology: Flowering late Mar–mid Apr in Texas, Arkansas; mid Apr–early May in Alabama; dormant by mid Jun.
Habitat: Sandstone outcrops, moist pinelands, or boggy areas
Elevation: 0–400 m

Discussion

Schoenolirion wrightii occurs in habitats similar to those of S. croceum in the Alabama plateau region and in the western part of its range.

Treatment of these white-flowered plants as a species distinct from Schoenolirion croceum is very tenuous; tepal color seems to be the only consistent difference between the two. At the time of the last systematic study of the genus (H. L. Sherman 1969), there seemed to be a significant difference in chromosome number between the two “color forms” (2n = 24 for S. wrightii and 2n = 30 or 32 for S. croceum). Since that time, one population of S. croceum with 2n = 24 has been found. In future treatments of the genus, S. wrightii may be considered to be a color form or variety of S. croceum.

Selected References

None.

Lower Taxa

None.

"elongating" is not a number."thicker" is not a number.

... more about "Schoenolirion wrightii"
versatile +  and dorsifixed +
cordate +  and linear +
H. L. Sherman +
Sherman +
whorled +, opposite +  and alternate +
dilated +
Amblystima +  and Oxytria +
reticulate-veined +  and parallel-veined +
keeled +  and flattened +
sheathing +  and involucrate +
ovate-obtuse;lanceolate-acuminate +
tunicate +  and scaly +
0mm +  and 17mm +
Ala. +, Ark. +, La. +  and Tex. +
0–400 m +
persistent +
connate-coroniform +  and dilated +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
sessile +  and pedicellate +
unfertilized +
unisexual +  and bisexual +
3-lobed +, indented +  and flattened +
membranaceous +  and leathery +
Sandstone outcrops, moist pinelands, or boggy areas +
persistent +
14cm;34cm +
not withering +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
3-lobed;globose +
zygomorphic +  and actinomorphic +
Flowering late Mar–mid Apr in Texas, Arkansas +, mid Apr–early May in Alabama +  and dormant by mid Jun. +
SouthW. Naturalist +
1 cm10 mm <br />0.01 m <br /> (12 cm120 mm <br />0.12 m <br />) +
wind-distributed +
1 +  and many +
flattened +  and globose +
adnate +  and free +
staminodial +
1 +  and several +
3-lobed +  and unlobed +
Schoenolirion wrightii +
Schoenolirion +
species +
3(-5)-veined +
persistent +
distinct +
ovate +  and ovatelanceolate +
0.44 cm4.4 mm <br />0.0044 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
sepaloid +  and petaloid +
narrower +
3 +  and 2 +