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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 fruiting specimens
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| 1 |
Legume contorted |
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(2) |
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Legume straight or slightly curved |
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(6) |
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| 2 (1) |
Pinnae 1 or 2 pairs; leaflets alternate or opposite |
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(3) |
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Pinnae 2-8 pairs; leaflets opposite |
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(4) |
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| 3 (2) |
Leaflets alternate except for terminal pair, obliquely ovate or oblong, 5-9 × 2-4.5 cm. |
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1 A. lucidum |
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Leaflets opposite, elliptic or ovate-elliptic, 7-18 × 3-9 cm. |
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2 A. ellipticum |
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| 4 (2) |
Branchlets angulate. |
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3 A. clypearia |
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Branchlets terete |
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(5) |
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| 5 (4) |
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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| 6 (1) |
Inflorescence cauliflorous; legume valves slightly contorted after dehiscence, conspicuously netted. |
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6 A. cordifolium |
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Inflorescence on leafy branches, terminal or axillary; legume valves not as above |
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(7) |
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| 7 (6) |
Pinnae (1 or)2 pairs, if 1 pair then leaflets alternate |
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(8) |
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Pinnae 1 pair; leaflets opposite or subopposite |
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(10) |
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| 8 (7) |
Young branchlets and leaf rachis conspicuously angulate; leaflets 8-30 × 5-12 cm. |
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7 A. eberhardtii |
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Young branchlets and leaf rachis not angulate; leaflets smaller than above |
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(9) |
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| 9 (8) |
Leaflets opposite, abaxially sparsely ferruginous pubescent, lateral veins 5-7 pairs. |
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8 A. balansae |
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Leaflets alternate, except terminal one, both surfaces glabrous, lateral veins 3-5 pairs. |
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9 A. alternifoliolatum |
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| 10 (7) |
Glands at petiole flat or concave |
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(11) |
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Glands at petiole and leaf rachis raised, more than 1 mm high, hollow |
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(13) |
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| 11 (10) |
Leaflets 1-3 pairs, lateral veins 4-6 pairs. |
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14 A. kerrii |
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Leaflets 2 or 3 pairs, lateral veins 3, 4, or 6-11 pairs |
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(12) |
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| 12 (11) |
Lateral veins 3 or 4 pairs. |
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15 A. robinsonii |
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Lateral veins 6-11 pairs. |
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16 A. turgidum |
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| 13 (10) |
Leaflets 2 pairs |
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(14) |
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Leaflets 2 or 3 pairs |
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(15) |
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| 14 (13) |
Petiolar gland 3-7 mm in diam.; leaflets to 25 cm. |
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10 A. xichouense |
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Petiolar gland 0.5-3 mm in diam.; leaflets to 14 cm. |
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11 A. chevalieri |
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| 15 (13) |
Petiolar gland (1.5-)2(-3) mm in diam.; leaflets 3 pairs. |
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12 A. laoticum |
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Petiolar gland 0.5-1.5 mm in diam.; leaflets 2 or 3 pairs. |
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13 A. tonkinense |
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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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