Orobanche cooperi subsp. latiloba

(Munz) L. T. Collins

Phytoneuron 2015-48: 15. 2015.

Illustrated
Basionym: Orobanche ludoviciana var. latiloba Munz Bull. Torrey Bot. Club 57: 621, plate 39, fig. 18. 1931
Synonyms: Aphyllon cooperi subsp. latilobum (Munz) A. C. Schneider O. multicaulis Brandegee
Treatment appears in FNA Volume 17. Treatment on page 485. Mentioned on page 479, 484.
Revision as of 19:25, 29 July 2020 by imported>Volume Importer
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Plants usually branched, base usually enlarged. Leaves rarely imbricate proximally; blade broadly lanceolate, 8–12 mm, apex obtuse. Inflorescences: bracts 7–11 mm, apex acuminate or obtuse, sometimes slightly reflexed. Corollas 22–32 mm; palatal folds densely villous; abaxial lip 5–9 mm, adaxial lip erect or reflexed, 6–10 mm, lobes with apiculate tooth. Anthers pubescent, stalked glands present on dorsal surface, rarely absent. Stigmas bilaminar-rhomboid, sometimes peltate or crateriform. 2n = 48, 96.


Phenology: Flowering Jan–Apr.
Habitat: Warm sandy deserts and dry washes of Sonoran Desert.
Elevation: -50–1000 m.

Distribution

Ariz., Calif., Nev., Mexico (Baja California), Mexico (Baja California Sur), Mexico (Sonora)

Discussion

Selected References

None.

Lower Taxa

None.
reflexed +  and spreading +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
reflexed +  and erect +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
glandular-pubescent +
obtuse +  and acuminate +
L. Turner Collins +, Alison E. L. Colwell +  and George Yatskievych +
(Munz) L. T. Collins +
enlarged +
Orobanche ludoviciana var. latiloba +
lanceolate +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
not leathery +, not +  and fleshy +
erect +  and reflexed +
lanceolate +  and linear +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
lavender +  and dark purple +
divided +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
pallid +, tinged pink +  and purple yellow or blue +
bent +  and tubular +
constricted +
2.2 cm22 mm <br />0.022 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
spikelike +
Ariz. +, Calif. +, Nev. +, Mexico (Baja California) +, Mexico (Baja California Sur) +  and Mexico (Sonora) +
-50–1000 m. +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
inconspicuous +
Warm sandy deserts and dry washes of Sonoran Desert. +
axillary +  and terminal +
canescent +  and glandular-pubescent +
deciduous +
dark purple +  and lavender +
loosely ascending +  and recurved +
glandular-pubescent +
triangular +, oblong-lanceolate +  and narrowly ovate +
erosulate +, erose +  and entire +
lobed +, toothed +  and entire +
tenuinucellate +  and unitegmic +
campylotropous-like +
spikelike +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Jan–Apr. +
Phytoneuron +
spikelike +
conspicuous +
coralloid +
slender +
black;tan;dark-brown +
500 +  and 2000 +
prismatic +, ovoid +  and oblong-ellipsoid +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
5 +  and 4 +
Illustrated +
subequal +
yellow +  and white +
aerial +  and subterranean +
puberulent +  and glabrous +
slender +
5 cm50 mm <br />0.05 m <br /> (45 cm450 mm <br />0.45 m <br />) +
crateriform +  and bilaminar-rhomboid +
glandular-pubescent +
Aphyllon cooperi subsp. latilobum +  and O. multicaulis +
Orobanche cooperi subsp. latiloba +
Orobanche cooperi +
subspecies +
tinged with purple;white;lavender;purple +
glandular-pubescent +
constricted +
darker purple +
perennial +  and annual +
holoparasitic +  and hemiparasitic +