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14. Alyxia Banks ex R. Brown, Prodr. 469. 1810.
[nom. cons.]
琏珠藤属 lian zhu teng shu
Plants woody lianas or erect to trailing shrubs, with latex. Leaves in whorls of 3 or 4, rarely opposite. Cymes terminal and/or axillary, sometimes in clusters or short thyrses. Flowers small, 5-merous. Calyx deeply divided, without basal glands. Corolla white or rarely yellow, salverform, tube cylindric, widened at stamens insertion, lobes overlapping to left; corona scales absent. Stamens included, inserted at or above middle of corolla tube; filaments very short; anthers free from pistil head; disc absent. Ovaries 2, distinct; ovules biseriate, 4-6 in each ovary. Style filiform; pistil head capitate, apex shortly 2-cleft. Fruit usually paired, moniliform, transversely constricted into 1-5 drupelike articles, or not jointed. Seeds ovate or oblong; endosperm horny, ruminate; cotyledons leaflike, erect or curved.
About 70 species: tropical Asia, Australia, Pacific Islands; 12 species in China.
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| 1 |
Leaves densely pubescent abaxially; cymes spicate |
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3 Alyxia villilimba |
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Leaves glabrous abaxially; cymes fascicled. |
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(2) |
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| 2 (1) |
Inflorescences 2-10.5 cm. |
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(3) |
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Inflorescences 0.5-2 cm. |
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(5) |
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| 3 (2) |
Corolla pubescent |
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1 Alyxia menglungensis |
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Corolla glabrous. |
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(4) |
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| 4 (3) |
Inflorescences 8-10.5 cm |
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2 Alyxia siamensis |
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Inflorescences 3-5 cm |
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4 Alyxia reinwardtii |
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| 5 (2) |
Leaf apex rounded, obtuse, or rarely retuse. |
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(6) |
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Leaf apex caudate, acuminate, or acute. |
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(7) |
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| 6 (5) |
Leaves usually in whorls of 4; leaf blade 5.5-10 2.5-3.5 cm; petiole 10-15 mm; corolla tube 7-10 mm |
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5 Alyxia insularis |
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Leaves opposite or in whorls of 3; leaf blade 1.5-3.5 0.8-2 cm; petiole ca. 2 mm; corolla tube 2-3 mm |
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6 Alyxia sinensis |
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| 7 (5) |
Leaf apex caudate or acuminate, acumen ca. 1.5 cm |
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7 Alyxia fascicularis |
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Leaf apex acute or short acuminate. |
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(8) |
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| 8 (7) |
Leaf blade with marginal veins |
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8 Alyxia marginata |
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Leaf blade without marginal veins. |
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(9) |
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| 9 (8) |
Ovary glabrous; articles of fruit ca. 6 4 mm |
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9 Alyxia taiwanensis |
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Ovary hairy; articles of fruit 7-22 5-10 mm. |
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(10) |
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| 10 (9) |
Articles of fruit ca. 7 mm; corolla yellow |
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11 Alyxia schlechteri |
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Articles of fruit 10-22 mm; corolla greenish white or greenish yellow. |
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(11) |
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| 11 (10) |
Sepals acuminate, 1.5-3 mm; corolla greenish white, tube ca. 3 mm; articles of fruit 10-13 8-10 |
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10 Alyxia levinei |
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Sepals obtuse or acute, 1.7-8 mm; corolla greenish yellow, tube 3-15 mm; articles of fruit 10-22 5-8 mm |
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12 Alyxia odorata |
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List of lower taxa
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