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3. Loranthus Jacquin, Enum. Stirp. Vindob. 55, 230. 1762.
[nom. cons., not Linnaeus (1753).]
桑寄生属 sang ji sheng shu
Hyphear Danser.
Shrubs parasitic, glabrous. Leaves opposite or subopposite, pinnately veined. Inflorescences axillary or terminal, spikes of flowers sessile, inserted in slight hollows on the rachis; 1 bract subtending each flower. Flowers bisexual or unisexual (plants dioecious), 5- or 6-merous, actinomorphic. Calyx usually ovoid, limb annular, persistent. Mature flower bud clavate or obovoid, straight. Corolla greenish, yellowish, or white, petals free, small, under 10 mm in mature bud, patent and spreading. Stamens inserted on the petals; anthers 2-4-loculed, ovoid or biglobose, sometimes absent. Pollen grain semiangular in polar view. Ovary 1-loculed; placentation basal. Style subcylindric; stigma capitate or truncate. Berry ovoid or subglobose, smooth.
About ten species: temperate and subtropical regions of Asia and Europe; six species (three endemic) in China.
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| 1 |
Spikes terminal; branching often apparently dichotomous. |
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(2) |
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Spikes axillary; branching not dichotomous. |
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(4) |
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| 2 (1) |
Leaf blade 5.5-7 × ca. 3 cm; flowers 5-merous; calyx 1.5-2 mm. |
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3 L. lambertianus |
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Leaf blade 2.5-5 × 1-2.5 cm; flowers mostly (5- or)6-merous; calyx 1-1.5 mm. |
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(3) |
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| 3 (2) |
Petals 1.5-2 mm; berry orange, globose, 7-8 mm. |
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1 L. tanakae |
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Petals 3-4 mm; berry greenish, ovoid, 4-5 mm. |
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2 L. guizhouensis |
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| 4 (1) |
Flowers unisexual; corolla of male flower 4-5 mm; corolla of female flower 2-3 mm; leaves with 5 or 6 pairs of lateral veins. |
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6 L. delavayi |
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Flowers bisexual; corolla ca. 2.5 mm; leaves with 2-5 pairs of lateral veins. |
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(5) |
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| 5 (4) |
Spikes 4-6(-10)-flowered; anthers 4-loculed; berry globose, ca. 4 mm; parasitic on species of Fagaceae. |
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4 L. pseudo-odoratus |
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Spikes 10-20-flowered; anthers 2-loculed; berry ovoid, ca. 5 × 3 mm; epiparasitic on other species of Loranthaceae. |
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5 L. kaoi |
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Lower Taxa
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