Orobanche bulbosa

Beck

Biblioth. Bot. 19: 83. 1890.

Common names: Chaparral broomrape
Basionym: Phelypaea tuberosa A. Gray Proc. Amer. Acad. Arts 7: 371. 1868
Synonyms: Aphyllon tuberosum (A. Gray) A. Gray Myzorrhiza tuberosa (A. Gray) Rydberg
Treatment appears in FNA Volume 17. Treatment on page 475. Mentioned on page 469.

Plants simple, sometimes branched, 8–30 cm, stout, base enlarged. Roots relatively conspicuous (forming a globular mass), slender or stout, branched or unbranched. Leaves numerous, large and imbricate proximally, appressed or slightly spreading; blade lanceolate, 5–10 mm, margins entire, apex acute, surfaces glabrous. Inflorescences dense, pyramidal, thyrsoid panicles, dark purple-brown, imbricately branched, cinereous to ferruginous-puberulent, hairs eglandular; flowers numerous; bracts strongly reflexed, lanceolate-subulate, 3–5 mm, apex acuminate, puberulent. Pedicels 0–5 mm, much shorter than plant axis, sometimes adnate to stem for a portion of their length or flattened; bracteoles 2. Flowers: calyx dark purple, weakly bilaterally symmetric, 6–11 mm, divided into 5 unequal lobes, cleft to base on adaxial side, otherwise deeply lobed, lobes attenuate, puberulent; corolla 10–18 mm, tube dark purple, wine colored, or dark gray, sometimes dark-pink, slightly constricted above ovary, ± straight, puberulent; palatal folds not prominent, pale-yellow, glabrous; lips purple to dark purple or wine colored, sometimes dark-pink or with darker-pink to purple veins, sometimes internally variegated with white, dark gray externally, abaxial lip spreading, 2–4 mm, lobes narrowly oblong or oblong-lanceolate, apex acute, often bluntly pointed, adaxial lip erect, spreading at tip, 2–4 mm, lobes triangular to oblong-triangular, apex acute, sometimes with a minute tooth; filaments glabrous, anthers included, minutely apiculate at base, glabrous or sparsely pubescent. Capsules narrowly ovoid, 5–6 mm. Seeds 0.3–0.5 mm. 2n = 48.


Phenology: Flowering mid Apr–Jul.
Habitat: Chaparral.
Elevation: 150–2000 m.

Distribution

Calif., Mexico (Baja California)

Discussion

Orobanche bulbosa is endemic to chaparral in California and northern Baja California, Mexico, distributed throughout the range of its host, Adenostoma fasciculatum (Rosaceae).

Selected References

None.

Lower Taxa

None.
... more about "Orobanche bulbosa"
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
spreading +  and erect +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
pubescent +  and glabrous +
puberulent +
acute +, pointed +  and acuminate +
L. Turner Collins +, Alison E. L. Colwell +  and George Yatskievych +
enlarged +
Phelypaea tuberosa +
lanceolate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not leathery +, not +  and fleshy +
lanceolate-subulate +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cleft +  and symmetric +
dark purple +
lobed +  and divided +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Chaparral broomrape +
pallid +, tinged pink +  and purple yellow or blue +
bent +  and tubular +
constricted +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
spikelike +
Calif. +  and Mexico (Baja California) +
150–2000 m. +
pale-yellow +
not prominent +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Chaparral. +
axillary +  and terminal +
deciduous +
spreading +  and appressed +
dark gray +, variegated with white +, with darker-pink to purple veins +, dark-pink +, wine colored +  and dark purple +
loosely ascending +  and recurved +
puberulent +
triangular +  and oblong-triangular +
unequal +
erosulate +, erose +  and entire +
lobed +, toothed +  and entire +
tenuinucellate +  and unitegmic +
campylotropous-like +
branched +  and thyrsoid +
cinereous +  and dark purple-brown +
ferruginous-puberulent +
spikelike +
flattened +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering mid Apr–Jul. +
Biblioth. Bot. +
spikelike +
unbranched +  and branched +
conspicuous +
coralloid +
stout +  and slender +
black;tan;dark-brown +
500 +  and 2000 +
prismatic +, ovoid +  and oblong-ellipsoid +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
5 +  and 4 +
subequal +
yellow +  and white +
aerial +  and subterranean +
puberulent +  and glabrous +
capitate +  and crateriform-peltate +
clavate +  and 2-4-lobed +
Aphyllon tuberosum +  and Myzorrhiza tuberosa +
Orobanche bulbosa +
Orobanche +
species +
dark-pink;dark gray;wine colored;dark gray;wine colored;dark purple +
straight +
puberulent +
constricted +
darker-pink +  and purple +
branched +  and simple +
perennial +  and annual +
holoparasitic +  and hemiparasitic +