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Vascular Plants of California
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Origanum ×majoricum
ITALIAN OREGANO, HARDY SWEET MARJORAM


Higher Taxonomy
Family: Lamiaceae (Labiatae)View DescriptionDichotomous Key
Common Name: MINT FAMILY
Habit: Annual to shrub [tree, vine], glabrous to hairy, generally aromatic. Stem: generally erect, generally 4-angled. Leaf: generally simple to deeply lobed, generally opposite, generally gland-dotted. Inflorescence: generally cymes, generally many in dense axillary clusters surrounding stem, generally separated by evident internodes or collectively crowded, spike- or panicle-like, occasionally head-like or raceme, subtended by leaves or bracts; flowers sessile or pedicelled. Flower: generally bisexual; calyx generally 5-lobed, radial to bilateral; corolla generally bilateral, 1--2-lipped, upper lip entire or 2-lobed, +- flat to hood-like, occasionally 0, lower lip generally 3-lobed; stamens generally 4, epipetalous, generally exserted, paired, pairs generally unequal, occasionally 2, staminodes 2 or 0; ovary superior, generally 4-lobed to base chambers 2, ovules 2 per chamber, style 1, generally arising from center at junction of lobes, stigmas generally 2. Fruit: generally 4 nutlets, generally ovoid to oblong, smooth.
Genera In Family: +- 230 genera, 7200 species: worldwide. Many cultivated for herbs, oils (Lavandula, lavender; Mentha, mint; Rosmarinus, rosemary; Thymus, thyme), some cultivated as ornamental (in California Cedronella, Leonotis, Monarda, Phlomis). Note: Moluccella laevis L., shell flower, historical waif in California. Satureja calamintha (L.) Scheele subsp. ascendens (Jordan) Briq. reported as alien but not naturalized. Salazaria moved to Scutellaria; California Hyptis moved to Condea, California Satureja moved to Clinopodium.
eFlora Treatment Author: Dieter H. Wilken & Margriet Wetherwax, family description, key to genera, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: OriganumView DescriptionDichotomous Key


Habit: Perennial herb [subshrub] glabrous to short-hairy. Stem: decumbent to erect, generally branched. Leaf: petioled to sessile; blade generally ovate, entire to toothed. Inflorescence: axillary, sessile or peduncled, collectively spike- or panicle-like; wide bract subtending flower, bracts generally overlapping. Flower: calyx radial, 5-lobed; corolla 2-lipped, upper lip +- entire, lower 3-lobed; stamens 4, enclosed by upper lip or exserted; style lobes +- unequal.
Etymology: (Greek: ancient common name, mountain delight) Note: Cultivated for tea, cooking herbs, essential oils (Origanum dictamnus L., dittany; Origanum majorana L., sweet marjoram).
eFlora Treatment Author: Arthur O. Tucker
Reference: Tucker & Rollins 1989 Baileya 23:14--27
Origanum ×majoricum Cambess.
NATURALIZED
Habit: Plant from rhizomes. Stem: 1--6 dm; short-hairy. Leaf: petiole 1--3 mm; blade 0.5--1.2 cm, entire, glabrous to puberulent, minutely gland-dotted; margin ciliate. Inflorescence: generally peduncled, collectively panicle-like; bracts 4--6 mm, pale green. Flower: calyx 2.5--3.5 mm, sparsely puberulent, gland-dotted; corolla 2-lipped for +- 1/3, 5--6 mm, white; stamens poorly developed or to 2.5 mm.
Ecology: Disturbed areas; Elevation: < 600 m. Bioregional Distribution: n SNF, ScV; Distribution Outside California: native to Balearic Islands, Spain, Portugal. Flowering Time: +- summer Note: Hybrid between Origanum vulgare, Origanum majorana L.; plants sterile or fertile, cultivated, spreading from rhizomes or seeds.
Jepson eFlora Author: Arthur O. Tucker
Reference: Tucker & Rollins 1989 Baileya 23:14--27
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Arthur O. Tucker 2012, Origanum ×majoricum, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=93856, accessed on April 16, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 16, 2024.

No expert verified images found for Origanum ×majoricum.



Geographic subdivisions for Origanum ×majoricum:
n SNF, ScV
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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).





 

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, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).