familyOnagraceae
subfamilyOnagraceae subfam. Onagroideae
genusOenothera
sectionOenothera sect. Gaura
subsectionOenothera subsect. Stenosiphon
Show Lower Taxa
Oenothera subsect. Stenosiphon
Syst. Bot. Monogr. 83: 167. 2007.
Basionym: Stenosiphon spach Ann. Sci. Nat., Bot., sér. 2, 4: 170. 1835
Treatment appears in FNA Volume 10.
Herbs probably biennial; from stout roots. Stems erect, branched or unbranched. Inflorescences wandlike, nodding. Flowers 4-merous, nearly actinomorphic, opening near sunrise; floral-tube 6–17 mm; petals white, slightly unequal; filaments without basal scales. Capsules erect in age, ovoid, somewhat flattened, 4-angled, valves with raised midrib and conspicuous lateral-veins; sessile. 2n = 14.
Distribution
c United States
Discussion
Species 1.
Selected References
None.
Lower Taxa
... more about "Oenothera subsect. Stenosiphon"
incomplete +
epigynous +
versatile +
indehiscent +
alternate +
cauline +
absent +
pedicel-like +
nutlike +
erect +
4-winged +
nutlike +
erect +
woody +
vegetative +
c United States +
oily +
straight +
absent +
oily +
straight +
absent +
oily +
straight +
absent +
exfoliating +
dithecal +
distinct +
deciduous +
absent +
lanate +
deciduous +
anthesis +
bisexual +
winged +
interlocking +
caulescent +
biennial +
suffrutescent +
peltate +
conspicuous +
nodding +
axillary +
wandlike +
conspicuous +
spreading +
simple +
alternate +
later +
deciduous +
cauline +
absent +
clustered +
many +
raised +
closing +
absent +
reduced +
absent +
inferior +
bitegmic +
clustered +
anatropous +
epigynous +
imbricate +
convolute +
white +
absent +
unequal +
longitudinal +
singly +
singly +
sterile +
Syst. Bot. Monogr. +
2007 +
abundant +
papillate +
splitting +
separating +
valvate +
deciduous +
coherent +
reflexed +
fragile +
absent +
not evident +
thin +
longer +
unequal +
equal +
longer +
equal +
arising +
unarmed +
not clonal +
longitudinal +
leafy +
2 times as many or as many as sepals +
decumbent +
erect +
peltate +
developing +
divided +
caducous +
intrapetiolar +
absent +
small +
unarmed +
not clonal +
persisting +
anthesis +
obscured +
Oenothera subsect. Stenosiphon +
Oenothera sect. Gaura +
subsection +
singly +
3(-5)-aperturate +
free +
sessile +
longitudinal +
united +
papillate +
thick +
distal +
1/2 +