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Annual, perennial herb, shrub; often glandular; root-parasites, roots modified into absorptive structures. Stem: generally round in ×-section. Leaf: generally simple, generally alternate, reduced to ± fleshy scales in non-green plants lacking chlorophyll; stipules generally 0. Inflorescence: spike to panicle, generally bracted, or flowers 1–2 in axils. Flower: bisexual; calyx lobes 0–5; corolla generally strongly bilateral, generally 2-lipped (upper lip generally 2-lobed, lower lip generally 3-lobed), abaxial lobes outside other lobes in bud; stamens epipetalous, 4 in 2 pairs (sometimes 1 pair sterile), additional staminode 0(1), anther sacs unequal; ovary superior, chambers 1–2, placentas 2–4, parietal, style 1, stigma lobes 0 or 2. Fruit: capsule, generally ± ovoid, loculicidal, valves 2–4. Seed: many, small, angled; surface smooth or netted.
99 genera, 2060 species: worldwide, especially northern temperate and Africa. [Bennett & Matthews 2006 Amer J Bot 93:1039–1051] High yield losses in many crops caused by Orobanche species in Africa, Mediterranean, Middle East, and eastern Europe. —Scientific Editors: Robert Patterson, Bruce G. Baldwin.
Key to Orobanchaceae
Annual, perennial herb, not green (holoparasites), generally glandular-puberulent distally; root attachment occasionally tuber-like. Stem: simple or branched. Inflorescence: generally ± spike-like (proximal flowers often short-pedicelled or on short branches), generally dense; flowers generally > 20; bracts generally lanceolate to deltate (wider on peduncle); bractlets 0 or 2. Flower: calyx lobes 4–5; corolla glandular-puberulent, generally lacking ring of hairs at stamen bases, upper lip erect to reflexed, 2-lobed, lower lip 3-lobed, spreading, throat floor with yellow folds; anthers glabrous to hairy; stigma lobes generally 2. Fruit: 2-valved; placentas generally 2, often lobed. Seed: < 0.7 mm.Key to Orobanche
140 species: worldwide, especially Mediterranean. (Greek: vetch strangler, from parasitic habit) [Heckard 1973 Madroño 22:41–70]
Plant 3–17 cm, pale to purple-tinged aboveground, glandular-puberulent. Stem: branches clustered, stout, generally thickened at base. Inflorescence: 3–4 cm, branched, generally round-topped, few-flowered; proximal pedicels 5–30 mm, distal 0. Flower: calyx 12–18 mm, lobes 5, > tube, linear-triangular; corolla 20–30 mm, sparsely short-glandular, lips 5–8 mm, ± purple to pink, veins darker, upper lobes rounded; anthers densely hairy; stigma 2-lobed, peltate.
2n=48,96. Openings in sagebrush scrub, generally on Artemisia tridentata; 1200–2800 m. n Cascade Range, High Sierra Nevada, Great Basin Floristic Province, n Desert Mountains (Panamint Range); to British Columbia, Montana, Utah. Apparently intergrading with Orobanche californica throughout its California range. Jun–Aug [Online Interchange]
Unabridged synonyms: [Orobanche californica var. corymbosa (Rydb.) Munz]
Previous taxon: Orobanche cooperi
Next taxon: Orobanche fasciculata
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 19 2014
Citation for this treatment: [Author of taxon treatment] 2013. Orobanche, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=35469, accessed on Sep 19 2014
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|Geographic subdivisions indicated for the distribution of Orobanche corymbosa|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
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