Oenothera heterophylla subsp. orientalis

W. Dietrich, P. H. Raven & W. L. Wagner

Ann. Missouri Bot. Gard. 70: 196. 1983.

Treatment appears in FNA Volume 10.

Herbs densely to sparsely strigillose, also at least parts of inflorescence glandular puber­ulent or glabrate. Flowers: buds with free tips usually erect, 1–3 mm; floral-tube 30–47 mm; sepals 17–30 mm; petals 25–35 mm. 2n = 14.


Phenology: Flowering May–Jul.
Habitat: Sandy soil of open sites, old alluvium areas in woodlands.
Elevation: 30–60 m.

Discussion

Subspecies orientalis is known from two disjunct areas: Greene, Pickens, and Sumter counties, Ala­bama, and Calhoun, Nevada, and Ouachita counties, Arkansas. W. Dietrich and W. L. Wagner (1988) deter­mined populations in Arkansas to be self-incompatible while those sampled in Alabama were self-compatible.

Selected References

None.

Lower Taxa

None.
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Warren L. Wagner +
W. Dietrich, P. H. Raven & W. L. Wagner +
7 cm70 mm <br />0.07 m <br /> (15 cm150 mm <br />0.15 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
pale green +  and yellow usually fading orange purple pale-yellow reddish or whitish +
pedicel-like +
Oenothera ser. +
indehiscent +  and loculicidal +
subentire +, dentate +, lobed to sinuate-dentate +  and lobed +
gradually narrowly lanceolate +  and lanceolate or elliptic +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
terete +  and weakly quadrangular +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
straight +  and curved +
indehiscent +  and dehiscent +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
lanceoloid +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
3 cm30 mm <br />0.03 m <br /> (13 cm130 mm <br />0.13 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
Ala. +  and Ark. +
30–60 m. +
whitish +  and green +
exfoliating +
basifixed +  and versatile +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
16.5 cm165 mm <br />0.165 m <br /> (19 cm190 mm <br />0.19 m <br />) +
hispid +, lanate +  and glabrous +
3 cm30 mm <br />0.03 m <br /> (4.7 cm47 mm <br />0.047 m <br />) +
zygomorphic +  and actinomorphic +
unscented +
2 +  and several +
curved +  and straight +
indehiscent +  and dehiscent +
4-angled +, terete +, tapering +, cylindrical +, ellipsoid +, clavate +, ovoid ellipsoid +  and cylindrical rhombic-obovoid or globose +
Sandy soil of open sites, old alluvium areas in woodlands. +
pustulate-based +
perennial +, short-lived +  and annual +
suffrutescent +
strigillose +
glabrate +, hirsute +, villous +, puberulent +  and glandular +
nodding +  and erect +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
deciduous +
3 cm30 mm <br />0.03 m <br /> (25 cm250 mm <br />0.25 m <br />) +
deeply lobed +  and remotely dentate or subentire +
pedicellate +  and sessile +
1 +  and 8 +
broadly elliptic +  and nearly rhombic +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Flowering May–Jul. +
Ann. Missouri Bot. Gard. +
basal +  and cauline +
clavate +  and globose +
flecked +  and brown +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
sculptured +  and smooth +
ellipsoid +  and broadly ellipsoid +
reduced +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
separate +  and separating +
purple +, pink +, red +  and green +
deciduous +
1.7 cm17 mm <br />0.017 m <br /> (3 cm30 mm <br />0.03 m <br />) +
parietal +, axile +  and placentation +
unequal +
adventitious +
aquatic +, amphibious +  and terrestrial +
in 2 unequal series +  and subequal +
2 times as many or as many as sepals +
branched +  and unbranched +
25 cm250 mm <br />0.25 m <br /> (70 cm700 mm <br />0.7 m <br />) +
petiolate +  and sessile +
intrapetiolar +
pubescent +  and glabrous +
4.5 cm45 mm <br />0.045 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
aquatic +, amphibious +  and terrestrial +
smooth +, reticulate +  and furrowed +
Raimannia heterophylla +
Oenothera heterophylla subsp. orientalis +
Oenothera heterophylla +
subspecies +
3(-5)-aperturate +
woody +  and hard +
smooth +  and erose +
papillate +