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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]
Stem: 1 or clustered, 5–20 cm, branched or not. Inflorescence: raceme, ± flat-topped, generally 5–20-flowered; bracts > 6, glandular-puberulent; pedicels 3–15 cm, distal shorter, bractlets 0. Flower: calyx lobes 5, 3–7 mm, generally < tube, deltate, generally ± acuminate; corolla 15–30 mm, curved, becoming erect, generally ± pink or yellow, lobes rounded to narrowly acute; anthers generally hairy; stigma 2-lobed, recurved; orange nectary gland at base of ovary.
2n=48. Dry, generally ± bare places, generally on shrubs (generally Artemisia, Eriodictyon, Eriogonum, Galium); < 3300 m. California Floristic Province, Great Basin Floristic Province, Desert Mountains; to Yukon Territory, central North America, northern Mexico. Undescribed plants intermediate to Orobanche uniflora, with prominent red nectary gland at base of ovary are scattered in California Floristic Province, on Galium. Apr–Jul [Online Interchange]
Unabridged synonyms: [Orobanche fasciculata var. franciscana Achey; Orobanche fasciculata var. lutea Achey]
Previous taxon: Orobanche corymbosa
Next taxon: Orobanche parishii
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Aug 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=35472, accessed on Aug 19 2014
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|Geographic subdivisions indicated for the distribution of Orobanche fasciculata|| 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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