Oenothera subsect. Schizocarya

(Spach) W. L. Wagner & Hoch

Syst. Bot. Monogr. 83: 168. 2007.

Basionym: Schizocarya spach Ann. Sci. Nat., Bot., sér. 2, 4: 170. 1835
Synonyms: Gaura [unranked] Schizocarya (Spach) Endlicher Gaura sect. Schizocarya (Spach) P. H. Raven & D. P. Gregory
Treatment appears in FNA Volume 10.

Herbs annual; from enlarged taproot. Stems usually unbranched, sometimes branched. Inflorescences slender, nodding. Flowers 4-merous, nearly actinomorphic, opening near sunset; floral-tube 1.5–5 mm; petals white, slightly unequal; filaments with minute basal scale. Capsules reflexed in age, fusiform, terete, weakly 4-angled in distal 1/3, angles becoming broad and rounded in proximal part, tapering abruptly toward base; sessile. 2n = 14.

Distribution

w, c United States, n, c Mexico, in s South America, Asia (China), Asia (Japan), Australia

Discussion

Species 1.

Selected References

None.

tapering +  and rounded +
indehiscent +
rounded +, , +, acute +  and attenuate +
Warren L. Wagner +
(Spach) W. L. Wagner & Hoch +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
pale green +  and yellow usually fading orange purple pale-yellow reddish or whitish +
pedicel-like +
Schizocarya spach +
indehiscent +  and loculicidal +
sinuate-dentate +  and denticulate serrate lobed or entire +
terete +
curved +  and straight +
indehiscent +  and dehiscent +
4-angled +, terete +  and fusiform +
w +, c United States +, n +, c Mexico +, in s South America +, Asia (China) +, Asia (Japan) +  and Australia +
whitish +  and green +
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 />) +
2 cm20 mm <br />0.02 m <br /> (4.2 cm42 mm <br />0.042 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
actinomorphic +  and 4-merous +
nodding +  and erect +
curved +  and straight +
indehiscent +  and dehiscent +
4-angled +, terete +, tapering +, cylindrical +, ellipsoid +, clavate +, ovoid ellipsoid +  and cylindrical rhombic-obovoid or globose +
suffrutescent +
producing rhizomes +  and woody +
nodding +  and erect +
8 cm80 mm <br />0.08 m <br /> (13 cm130 mm <br />0.13 m <br />) +
deciduous +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
reduced +
pedicellate +  and sessile +
1 +  and 8 +
clawed +, oblanceolate +, rhombic +, spatulate +  and elliptic +
unequal +
Syst. Bot. Monogr. +
basal +  and cauline +
2 +  and 1 +
clavate +  and globose +
1 +  and 8 +
sculptured +  and smooth +
reduced +
purple +, pink +, red +  and green +
deciduous +
coherent +
disarticulating +  and sessile +
parietal +, axile +  and placentation +
not evident +
unequal +
aquatic +, amphibious +  and terrestrial +
in 2 unequal series +  and subequal +
2 times as many or as many as sepals +
branched +  and unbranched +
ascending +  and erect +
petiolate +  and sessile +
intrapetiolar +
pubescent +  and glabrous +
aquatic +, amphibious +  and terrestrial +
smooth +, reticulate +  and furrowed +
rugose +, papillose +  and non-papillate +
oblanceoloid +  and ovoid +
Gaura [unranked] +  and Gaura sect. +
Oenothera subsect. Schizocarya +
Oenothera sect. Gaura +
subsection +
3(-5)-aperturate +
woody +  and hard +
smooth +  and erose +
papillate +