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Vascular Plants of California
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Arceuthobium campylopodum

Higher Taxonomy
Family: ViscaceaeView DescriptionDichotomous Key
Habit: Perennial herb, shrub, generally +- green, parasitic on aboveground parts of woody plants; dioecious [monoecious]. Stem: brittle; 2° branches generally many. Leaf: simple, entire, opposite, 4-ranked, with blade or scale-like (then each pair generally fused). Inflorescence: spikes or cymes, axillary or terminal; bracts opposite, 4-ranked, scale-like, each pair fused. Flower: unisexual, radial, 2--4 mm; perianth parts in 1 series. Staminate Flower: perianth parts 3--4(7); anthers generally sessile, opposite and generally on perianth parts. Pistillate Flower: perianth parts generally 2--4; ovary inferior, 1-chambered, style unbranched, stigma +- obscure. Fruit: berry, shiny. Seed: 1(2), without thickened coat, gelatinous.
Genera In Family: 7 genera, +- 450 species: tropics, generally northern temperate. Toxicity: All parts of most members may be TOXIC. Note: Sometimes included in Loranthaceae; parasitic on plants in many other families.
eFlora Treatment Author: Job Kuijt
Scientific Editor: Thomas J. Rosatti.
Genus: ArceuthobiumView DescriptionDichotomous Key

Habit: Perennial herb, shrub, glabrous. Stem: generally < 20 cm, +- angled at least when young, +- yellow, +- green, brown, purple; branches whorled or in 1 plane. Leaf: < 1 mm, scale-like. Inflorescence: generally spikes, peduncle short; flowers generally opposite, 4-ranked, less often whorled or 1, terminal. Staminate Flower: perianth parts generally 3--4; anthers +- 1-chambered. Pistillate Flower: perianth parts 2, persistent, minute. Fruit: generally 2--5 mm, broadly fusiform-spheric, 2-colored (1 color below, 1 above); pedicel short, recurved; seeds projected to 15 m by fruit explosion.
Species In Genus: 26 species: temperate, tropics northern hemisphere. Etymology: (Greek: juniper, life) Note: Most important of timber pathogens; most species cause abnormal branching (witches' brooms) in hosts. Recent molecular studies support reunification of many western North American species under Arceuthobium campylopodum.
eFlora Treatment Author: Job Kuijt
Reference: Nickrent et al. 2004 Amer J Bot 91:125--138
Arceuthobium campylopodum Engelm.
Stem: 3--14 cm, 1--6 mm wide at base, yellow, olive-green, or brown. Seed: mature Aug--Dec. Chromosomes: n=14.
Ecology: Common. Conifer forest, on Abies, Pinus (except Pinus contorta subsp. murrayana), Tsuga, rarely Picea; Elevation: < 2800 m. Bioregional Distribution: NW, CaR, SN, CW, TR, PR, GB, DMtns; Distribution Outside California: to southeastern Alaska, Montana, Colorado, New Mexico, northern Baja California. Flowering Time: Generally Jul--Nov
Synonyms: Arceuthobium abietinum (Engelm.) Hawksw. & Wiens; Arceuthobium californicum Hawksw. & Wiens; Arceuthobium cyanocarpum J.M. Coult. & A. Nelson; Arceuthobium divaricatum Engelm.; Arceuthobium littorum Hawksw., Wiens, & Nickrent; Arceuthobium monticola Hawksw., Wiens, & Nickrent; Arceuthobium occidentale Engelm.; Arceuthobium siskiyouense Hawksw., Wiens, & Nickrent; Arceuthobium tsugense (Rosend.) G.N. Jones; Arceuthobium tsugense subsp. contortae Wass & Mathiasen; Arceuthobium tsugense subsp. mertensianae Hawksw. & Nickrent; Arceuthobium tsugense subsp. tsugense
Jepson eFlora Author: Job Kuijt
Reference: Nickrent et al. 2004 Amer J Bot 91:125--138
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Arceuthobium campylopodum

botanical illustration including Arceuthobium campylopodum


Citation for this treatment: Job Kuijt 2012, Arceuthobium campylopodum, in Jepson Flora Project (eds.) Jepson eFlora, /eflora/eflora_display.php?tid=13881, accessed on August 12, 2020.

Citation for the whole project: Jepson Flora Project (eds.) 2020, Jepson eFlora,, accessed on August 12, 2020.

Arceuthobium campylopodum
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© 2006 George W. Hartwell
Arceuthobium campylopodum
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© 2012 Gary A. Monroe
Arceuthobium campylopodum
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© 2009 Neal Kramer
Arceuthobium campylopodum
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© 2018 Neal Kramer
Arceuthobium campylopodum
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© 2010 James M. Andre
Arceuthobium campylopodum
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© 2011 Steve Matson

More photos of Arceuthobium campylopodum in CalPhotos

Geographic subdivisions for Arceuthobium campylopodum:
NW, CaR, SN, CW, TR, PR, GB, DMtns
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map of distribution 1
(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).


View elevation by latitude chart

Data provided by the participants of the  Consortium of California Herbaria.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).