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6. Rhamnella Miquel, Prolus. Fl. Jap. 218; Ann. Mus. Bot. Lugduno-Batavi. 3: 30. 1867.
猫乳属 mao ru shu
Chaydaia Pitard.
Shrubs or small trees, rarely scandent, evergreen to mostly deciduous. Leaves alternate, shortly petiolate; stipules narrowly triangular or lanceolate, often persistent; leaf blade papery or submembranous, pinnately veined, margin serrulate. Flowers yellow-green, small, bisexual, 5-merous, pedicellate, in shortly pedunculate axillary cymes, or fascicled in axils of leaves. Calyx tube cup-shaped; lobes triangular, midvein adaxially keeled and with centrally inserted beaklike protrusion. Petals ovate-spatulate or orbicular-spatulate, ± distinctly cucullate, enfolding stamens. Stamens dorsifixed; filaments free from claw at base, lanceolate-linear. Disk pentagonous, thin, lining calyx tube, nectariferous. Ovary superior, base slightly immersed in disk, 1- or 2-loculed or imperfectly 1-loculed, with 2 ovules per locule; styles terminally 2-fid. Drupe yellowish to orange, turning black or purple-black when ripe, cylindric-ellipsoidal base with persistent remnants of calyx tube, with rudimentary style at apex, 1- or 2-loculed, with 1 or 2 seeds.
Eight species: China, Japan, Korea; eight species (five endemic) in China.
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| 1 |
Evergreen shrubs or small trees, rarely scandent |
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1 R. rubrinervis |
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Deciduous shrubs or small trees, never scandent |
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(2) |
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| 2 (1) |
Young branches, petioles, and abaxial leaf surface pubescent |
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(3) |
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Young branches, petioles, and abaxial leaf surface glabrous or subglabrous |
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(4) |
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| 3 (2) |
Leaf blade obovate-oblong or obovate-elliptic, rarely obovate, apex caudate-acuminate or long acuminate, abaxially pubescent or only on veins, lateral veins 5-11(-13) pairs. |
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2 R. franguloides |
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Leaf blade subelliptic or oblong, apex shortly acuminate or acuminate, abaxially tomentose or pubescent, lateral veins 5-8 pairs. |
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3 R. julianae |
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| 4 (2) |
Leaf blade 7-15 cm, obovate-elliptic or obovate-oblong, apex caudate-acuminate, glabrous or abaxially pilose on veins, lateral veins 7-10 pairs. |
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4 R. caudata |
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Leaf blade usually shorter than 7 cm, ovate, ovate-elliptic, or lanceolate-elliptic, apex acute or acuminate, lateral veins 4-8 pairs |
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(5) |
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| 5 (4) |
Leaf lateral veins 4 or 5 pairs, margin subentire or inconspicuously serrulate |
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(6) |
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Leaf lateral veins 5-8 pairs, margin conspicuously serrulate |
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(7) |
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| 6 (5) |
Leaf blade ovate or ovate-elliptic, apex shortly acuminate, rarely acute, margin entire at lower half, inconspicuously serrulate at upper half. |
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5 R. wilsonii |
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Leaf blade elliptic or lanceolate-elliptic, broadest at middle, apex acute, margin inconspicuously serrulate. |
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6 R. gilgitica |
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| 7 (5) |
Leaf blade oblong, both surfaces glabrous, margin entire at lower 1/3, lateral veins 5-7 per side. |
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7 R. forrestii |
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Leaf blade narrowly elliptic, adaxially pilose on veins, margin serrulate, lateral veins 6-8 pairs. |
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8 R. martini |
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Lower Taxa
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