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5. Gymnosporia (Wight & Arnott) Bentham & J. D. Hooker, Gen. Pl. 1: 359, 365. 1862.
裸实属 luo shi shu
Authors: Quanru Liu & Michele Funston
Celastrus sect. Gymnosporia Wight & Arnott, Prodr. Fl. Ind. Orient. 159. 1834.
Shrubs or small trees, usually erect, glabrous or pubescent; branches often thorny. Leaves alternate or fasciculate, entire or serrate, estipulate. Inflorescences axillary, fasciculate, cymose, or flowers solitary. Flowers bisexual, (4 or)5-merous. Disk fleshy, annular, (4 or)5-angled or lobed, intrastaminal; anthers longitudinally dehiscent, introrse. Ovary (2 or)3-locular, base confluent with disk; ovules erect, 2 per locule. Capsule obovoid or nearly globose, leathery, loculicidally dehiscent. Seeds usually 3-6, ellipsoid; aril basal to enveloping seed.
About 80 species: tropics and subtropics of both the Old and New Worlds, but mainly tropics of Africa and Asia; 11 species (seven endemic) in China.
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| 1 |
Twigs thornlike, bearing leaves and flowers, bearing needlelike thorns |
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(2) |
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Twigs without an apical thorn, bearing many thorns, rarely few thorned or unarmed |
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(5) |
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| 2 (1) |
Twigs and petioles pubescent with short dense hairs, gradually glabrescent; leaf blade usually 1-5 cm |
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(3) |
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Twigs and petioles glabrous; leaf blade usually 3-7(-12) cm |
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(4) |
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| 3 (2) |
Capsule 2-valved, 5-8 mm; peduncle 0.5-1 cm; flowers 3-5 mm in diam.; petiole shorter than 3 mm. |
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1 G. diversifolia |
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Capsule 3-valved, 1-1.2 cm; peduncle 1-2 cm; flowers 5-8 mm in diam.; petiole 3-8 mm. |
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2 G. berberoides |
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| 4 (2) |
Leaf blade leathery, broadly obovate or broadly elliptic, rounded or obcordate, netting veins obvious. |
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3 G. orbiculata |
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Leaf blade papery or subleathery, narrowly elliptic or elliptic-lanceolate, netting veins not obvious. |
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4 G. variabilis |
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| 5 (1) |
Twigs unarmed |
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(6) |
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Twigs thorny, thorns often axillary |
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(7) |
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| 6 (5) |
Leaf blade elliptic-lanceolate or oblanceolate, 3.5-6.5 × 0.5-1.5 cm, lateral veins 6-9 pairs. |
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10 G. tiaoloshanensis |
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Leaf blade obovate, ca. 5 × 3 cm, lateral veins 4-6 pairs. |
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11 G. emarginata |
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| 7 (5) |
Ovary with 2 carpels; capsule 2-valved. |
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5 G. esquirolii |
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Ovary with 3 carpels; capsule 3-valved |
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(8) |
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| 8 (7) |
Aril saccate; cymes usually dichotomous; thorns thick. |
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8 G. royleana |
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Aril cupulate, only covering seed at base or not exceeding the middle; cymes usually monochasial; thorns slender |
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(9) |
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| 9 (8) |
Leaf blade broadly obovate, obovate, or elliptic, 1-2 cm; petiole 1-2 mm; peduncle 2-5 mm. |
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7 G. jinyangensis |
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Leaf blade lanceolate, narrowly elliptic, narrowly obovate, or oblanceolate, 2-8(-14) cm; petiole 2-8(-12) mm; peduncle 1-3(-4.5) cm |
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(10) |
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| 10 (9) |
Leaf blade lanceolate, 6.5-8 cm, subleathery; petiole 5-8 mm; peduncle 2-4.5 cm. |
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6 G. rufa |
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Leaf blade narrowly elliptic, narrowly obovate, or oblanceolate, 2-8(-14) cm, papery; petiole 2-7(-12) mm; peduncle 1-3 cm. |
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9 G. graciliramula |
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List of lower taxa
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