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Arceuthobium campylopodum
WESTERN DWARF MISTLETOE

Higher Taxonomy
Family: ViscaceaeView DescriptionDichotomous Key

Common Name: MISTLETOE FAMILY
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

Common Name: DWARF MISTLETOE
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.

Arceuthobium campylopodum Engelm.
NATIVE
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
eFlora Treatment Author: Job Kuijt
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botanical illustration including Arceuthobium campylopodum

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Citation for this treatment: Job Kuijt 2016. Arceuthobium campylopodum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=13881, accessed on February 12, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 12, 2016.


Arceuthobium campylopodum
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© 2009 Neal Kramer
Arceuthobium campylopodum
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© 2009 Neal Kramer
Arceuthobium campylopodum
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© 2009 Keir Morse
Arceuthobium campylopodum
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© 2010 James M. Andre
Arceuthobium campylopodum
click for enlargement
© 2009 Keir Morse
Arceuthobium campylopodum
click for enlargement
© 2009 Neal Kramer

More photos of Arceuthobium campylopodum in CalPhotos


Geographic subdivisions for Arceuthobium campylopodum:
NW, CaR, SN, CW, TR, PR, GB, DMtns;
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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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).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.