Oenothera capillifolia subsp. capillifolia

Synonyms: Calylophus berlandieri subsp. pinifolius (Engelmann ex A. Gray) Towner Meriolix hillii Small M. melanoglottis Rydberg M. serrulata var. pinifolia (Engelmann ex A. Gray) Small Oenothera berlandieri subsp. pinifolia (Engelmann ex A. Gray) W. L. Wagner & Hoch O. serrulata var. maculatah. Léveillé O. serrulata subsp. pinifolia (Engelmann ex A. Gray) Munz O. serrulata var. pinifolia Engelmann ex A. Gray
Treatment appears in FNA Volume 10.

Herbs annual or short-lived perennial. Stems 1–several, unbranched or sparsely branched, ascending to erect, 30–80 cm. Leaves 2.5–9 × 0.2–1 cm; blade margins remotely serrulate to spinulose-serrate. Flowers: buds with free tips 0.5–4 mm; sepals with conspicuously keeled midribs. 2n = 14.


Phenology: Flowering Mar–Sep.
Habitat: Prairies, open places in oak savannas on rocky, clay, or sandy soil, often calcareous.
Elevation: 0–900 m.

Discussion

Subspecies capillifolia occurs from Blaine and Lincoln counties, Oklahoma, south through a narrow portion of north-central Texas to central Texas, where it is widely distributed, especially on the Edwards Plateau; also occurring locally in western and southern Louisiana. The floral tubes and/or stigma of some populations, especially from Bexar, Blanco, Comal, Gillespie, Hays, Kendall, Kerr, and Travis counties, Texas, are a deep blackish purple, while others are yellow, which is typical of the section.

Selected References

None.

Lower Taxa

None.

No values specified.

0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Warren L. Wagner +
Scheele +
pale green +  and yellow usually fading orange purple pale-yellow reddish or whitish +
attenuate +
Calylophus spach +
indehiscent +  and loculicidal +
remotely serrulate +  and spinulose-serrate +
serrulate or spinulose-serrate +  and subentire +
linear +  and narrowly lanceolate or oblanceolate +
reduced +
quadrangular +
, +  and straight +
tapering +, cylindrical +  and obtusely 4-angled +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
La. +, Okla. +  and Tex. +
0–900 m. +
gray +  and brown +
exfoliating +
basifixed +  and versatile +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
6 cm60 mm <br />0.06 m <br /> (7 cm70 mm <br />0.07 m <br />) +
hispid +, lanate +  and glabrous +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
zygomorphic +  and actinomorphic +
curved +  and straight +
indehiscent +  and dehiscent +
4-angled +, terete +, tapering +, cylindrical +, ellipsoid +, clavate +, ovoid ellipsoid +  and cylindrical rhombic-obovoid or globose +
Prairies, open places in oak savannas on rocky, clay, or sandy soil, often calcareous. +
perennial +, short-lived +  and annual +
suffrutescent +
strigillose +  and glabrous +
nodding +  and erect +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
deciduous +
2.5 cm25 mm <br />0.025 m <br /> (9 cm90 mm <br />0.09 m <br />) +
2 cm20 mm <br />0.02 m <br /> (?) +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
spinulose-serrate +  and serrulate +
subentire +
pedicellate +  and sessile +
1 +  and 8 +
fading orangish +  and purplish +
suborbiculate +  and rhombic or obcordate +
0.6 cm6 mm <br />0.006 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0 cm0 mm <br />0 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering Mar–Sep. +
basal +  and cauline +
clavate +  and globose +
sculptured +  and smooth +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
purple +, pink +, red +  and green +
deciduous +
with keeled midribs +  and flat +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
parietal +, axile +  and placentation +
unequal +
aquatic +, amphibious +  and terrestrial +
in 2 unequal series +  and subequal +
2 times as many or as many as sepals +
branched +  and unbranched +
10 cm100 mm <br />0.1 m <br /> (25 cm250 mm <br />0.25 m <br />) +
ascending +  and erect +
1 +  and several +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
4-lobed +, discoid +  and quadrangular +
petiolate +  and sessile +
intrapetiolar +
pubescent +  and glabrous +
0.9 cm9 mm <br />0.009 m <br /> (3 cm30 mm <br />0.03 m <br />) +
aquatic +, amphibious +  and terrestrial +
smooth +, reticulate +  and furrowed +
rugose +, papillose +  and non-papillate +
Calylophus berlandieri subsp. pinifolius +, Meriolix hillii +, M. melanoglottis +, M. serrulata var. pinifolia +, Oenothera berlandieri subsp. pinifolia +, O. serrulata var. maculatah. +, O. serrulata subsp. pinifolia +  and O. serrulata var. pinifolia +
Oenothera capillifolia subsp. capillifolia +
Oenothera capillifolia +
subspecies +
3(-5)-aperturate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
woody +  and hard +
smooth +  and erose +
papillate +