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37. Archidendron F. Mueller, Fragm. 5: 59. 1865.
猴耳环属 hou er huan shu
Cylindrokelupha Kostermans; Paralbizzia Kostermans.
Trees or shrubs, unarmed. Leaves bipinnate; stipules present or not; petiole, rachis, and pinnae with glands; pinnae in few pairs; leaflets few to several pairs, rarely in 1 pair. Inflorescence a globose head or arranged in panicle, terminal or axillary, or cauliflorous. Flowers white, small, bisexual or polygamous, uniform. Calyx campanulate or tubular, 5-toothed. Petals connate below middle; lobes 5. Stamens numerous; filaments exserted, united into a tube; anthers small, apex eglandular. Carpels 1 to several, free, sessile or stipitate, many ovuled; style filiform; stigma terminal, capitellate. Legume much curved or spirally twisted, or straight, cylindric, flat or swollen. Seeds ovoid or orbicular, without pleurogram.
About 100 species: tropical Asia; 16 species (three endemic) in China.
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Key based on flowering specimens
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| 1 |
Branchlets angular or winged |
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(2) |
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Branchlets terete |
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(3) |
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| 2 (1) |
Flowers pedicellate. |
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3 A. clypearia |
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Flowers sessile. |
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7 A. eberhardtii |
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| 3 (1) |
Ovary sessile. |
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16 A. turgidum |
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Ovary stipitate |
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(4) |
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| 4 (3) |
Inflorescence cauliflorous; legume valves conspicuously netted. |
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6 A. cordifolium |
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Inflorescence on leafy branches, terminal or axillary; legume valves not netted |
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(5) |
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| 5 (4) |
Leaflets alternate except for distal pair |
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(6) |
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Leaflets all opposite or subopposite |
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(7) |
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| 6 (5) |
Glands on leaf rachis depressed; calyx 1.5-2 mm; legume twisted into a circle. |
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1 A. lucidum |
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Glands on leaf rachis globose; calyx ca. 4 mm; legume cylindric. |
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9 A. alternifoliolatum |
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| 7 (5) |
Tertiary veins of leaflets forming ladderlike connections between secondary ones. |
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11 A. chevalieri |
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Tertiary veins of leaflets not forming ladderlike connections |
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(8) |
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| 8 (7) |
Petiolar gland raised, hollow |
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(9) |
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Petiolar gland circular, elliptic, or oblong |
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(11) |
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| 9 (8) |
Calyx glabrous. |
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12 A. laoticum |
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Calyx faintly to densely puberulent |
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(10) |
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| 10 (9) |
Calyx subtubular, ca. 2 mm; corolla ca. 5.5 mm, sericeous. |
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13 A. tonkinense |
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Calyx campanulate, ca. 3 mm; corolla ca. 8 mm, puberulent. |
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10 A. xichouense |
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| 11 (8) |
Calyx tube puberulent to tomentose |
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(12) |
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Calyx tube glabrous |
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(14) |
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| 12 (11) |
Pinnae 1 or 2 pairs. |
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1 A. lucidum |
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Pinnae 2-6 pairs |
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(13) |
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| 13 (12) |
Pinnae 2 or 3 pairs; leaflets 4-7 pairs, larger, 2-9 × 1.5-4 cm. |
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4 A. utile |
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Pinnae 5 or 6 pairs; leaflets 7-14 pairs, smaller, 0.5-2 × 0.4-0.9 cm. |
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5 A. multifoliolatum |
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| 14 (11) |
Distal leaves with only 1 pair of leaflets per pinna. |
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14 A. kerrii |
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Distal leaves with more than 1 pair of leaflets per pinna |
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(15) |
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| 15 (14) |
Corolla (9-)12.5-15 mm. |
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15 A. robinsonii |
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Corolla to 8 mm |
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(16) |
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| 16 (15) |
Corolla tube glabrous. |
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14 A. kerrii |
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Corolla tube puberulent to woolly |
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(17) |
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| 17 (16) |
Heads 2-6-flowered. |
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2 A. ellipticum |
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Heads 10- or more flowered. |
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8 A. balansae |
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List of Keys
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List of lower taxa
| Related Links (opens in a new window) |
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Treatments in Other Floras @ www.efloras.org
Other Databases
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