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2. Sloanea Linnaeus, Sp. Pl. 1: 512. 1753.
猴欢喜属 hou huan xi shu
Echinocarpus Blume.
Trees or shrubs. Buds usually pubescent. Leaves alternate or clustered at twig apices, simple, petiolate, margin entire or serrate, pinnately veined; stipules caducous. Flowers solitary or in racemes, axillary, long stalked, usually bisexual. Sepals 4 or 5, valvate or imbricate, ovate, slightly connate at base. Petals 4 or 5, rarely absent, obovate, imbricate, margin entire or dentate at apices. Stamens numerous, inserted on disk; filaments short; anthers opening by vertical slit, connective usually elongated as beak. Disk broad, thick. Ovary 3-7-loculed; ovules several per locule, furrowed, pubescent; style free or connate, subulate. Capsule globose or ovoid, prickly, septicidally dehiscent into 3-7 valves; exocarp woody, thick; endocarp thin, leathery, usually detached from exocarp when dry. Seeds 1 to several, pendulous, usually arillate in lower 1/2; endosperm fleshy, copious. Cotyledons flat.
About 120 species: primarily in the tropics and subtropics; 14 species (seven endemic) in China.
Echinocarpus cavaleriei H. Léveillé (Repert. Spec. Nov. Regni Veg. 10: 474. 1912), E. erythrocarpus H. Léveillé (loc. cit., "erythrocarpa"), E. esquirolii H. Léveillé (loc. cit.), and E. hederirhizus H. Léveillé (loc. cit., "hederaerhiza") are synonyms of, respectively, Euonymus acanthoxanthus Pitard, E. acanthocarpus Franchet, E. acanthoxanthus, and E. aculeatus Hemsley, all in the Celastraceae (see Fl. China 11).
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| 1 |
Prickles of capsule shorter than 7 mm, very dense |
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(2) |
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Prickles of capsule longer than 7 mm, not dense |
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(8) |
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| 2 (1) |
Branchlets and leaf blade glabrous |
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(3) |
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Branchlets tomentose; leaf blade abaxially pubescent at least when young |
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(4) |
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| 3 (2) |
Leaf blade elliptic or orbicular, thickly leathery, more than 12 cm wide. |
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1 S. cordifolia |
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Leaf blade oblong or obovate, membranous or papery, less than 8 cm wide. |
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3 S. dasycarpa |
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| 4 (2) |
Leaf blade not less than 9 cm wide, lateral veins not less than 9 per side. |
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2 S. tomentosa |
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Leaf blade less than 8 cm wide, lateral veins to 8 per side |
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(5) |
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| 5 (4) |
Leaf blade lanceolate or oblanceolate, to 3.5 cm wide. |
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6 S. leptocarpa |
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Leaf blade oblong, elliptic, or obovate, more than 4 cm wide |
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(6) |
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| 6 (5) |
Branchlets and petiole glabrous or sparsely pilose. |
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4 S. chingiana |
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Branchlets and petiole densely yellow-brown tomentose |
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(7) |
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| 7 (6) |
Leaf margin entire, base rounded or slightly cordate; prickles on capsule shorter than 2.5 mm. |
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5 S. integrifolia |
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Leaf margin sparsely and minutely dentate, base acute; prickles on capsule 5-7 mm. |
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7 S. xichouensis |
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| 8 (1) |
Leaf blade abaxially pubescent at least on veins |
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(9) |
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Leaf blade glabrous or with tufts of hairs in vein axils only |
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(10) |
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| 9 (8) |
Leaf blade broadest above middle, usually attenuate to base, base narrow and rounded. |
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8 S. sterculiacea |
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Leaf blade broadest below middle, base broad and rounded. |
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9 S. mollis |
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| 10 (8) |
Leaf blade ovate-lanceolate or ovate-oblong, lateral veins sparse. |
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10 S. changii |
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Leaf blade not ovate-lanceolate or ovate-oblong, lateral veins dense |
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(11) |
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| 11 (10) |
Branchlets pilose at least when young. |
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12 S. hainanensis |
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Branchlets glabrous |
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(12) |
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| 12 (11) |
Leaf blade narrowly obovate or oblanceolate, usually attenuate to base, lateral veins 7-9 per side. |
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13 S. hemsleyana |
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Leaf blade oblong, obovate, or elliptic, lateral veins 5-7 per side |
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(13) |
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| 13 (12) |
Leaf blade with angle between midvein and lateral veins ca. 30°, lateral veins adaxially conspicuous; capsule ca. 6 cm. |
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14 S. sigun |
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Leaf blade with angle between midvein and lateral veins more than 50°, lateral veins adaxially inconspicuous; capsule 2-2.5 cm. |
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11 S. sinensis |
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List of lower taxa
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