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3. Musa Linnaeus, Sp. Pl. 2: 1043. 1753; Gen. Pl. ed. 5; 466, 1754.
芭蕉属 ba jiao shu
Herbs perennial, tufted, rhizomatous, stoloniferous. Stems remaining short until flowering. Pseudostems composed of closely packed leaf sheaths, more than 60 cm, base slightly swollen. Leaves large; petiole long, base enlarged into a sheath; leaf blade oblong. Inflorescence terminal, erect, pendulous, or subpendulous, not conical, lax. Bracts green, brown, dull purple, or rarely yellow, flat or furrowed, convolute or imbricate in bud, usually deciduous. Flowers in l or 2 rows per bract, deciduous; flowers in proximal bracts female (with reduced stamens) or bisexual; flowers in distal bracts male (with reduced gynoecium); sometimes (in cultivated or semicultivated forms) all flowers functionally sterile. Compound tepal tubular, soon splitting to base on 1 side, apex 5-toothed; free tepal inserted within compound tepal and opposite to it. Stamens 5; filaments short; anthers linear, 2-loculed. Berries elongate, fleshy, with numerous seeds (except in parthenocarpic forms). Seeds irregularly globose to lenticular.
About 30 species: mainly in SE Asia; 11 species (two endemic, three introduced) in China.
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| 1 |
Inflorescence erect or ascending (pendulous in M. sanguinea); flowers 3 or 6 per bract, in 1 row; pseudostems often less than 3 m. |
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(2) |
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Inflorescence pendulous or subpendulous; flowers 8--20 per bract, in 2 rows; pseudostems often more than 3 m. |
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(4) |
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| 2 (1) |
Free tepal much shorter than compound tepal |
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1 Musa rubra |
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Free tepal nearly as long as compound tepal. |
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(3) |
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| 3 (2) |
Inflorescence rachis glabrous; flowers 6 per bract |
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2 Musa coccinea |
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Inflorescence rachis brown puberulent; flowers 3 per bract |
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3 Musa sanguinea |
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| 4 (1) |
Leaf sheath distally and leaf blade abaxially pruinose (sometimes not pruinose in M. balbisiana); fruit of cultivated species usually edible, seedless. |
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(5) |
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Leaf sheath distally and leaf blade abaxially not pruinose (leaf blade abaxially pruinose in M. textilis); fruit inedible, with numerous seeds. |
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(7) |
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| 5 (4) |
Inflorescence rachis hairy; bracts usually acute at apex |
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4 Musa acuminata |
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Inflorescence rachis glabrous (sometimes pubescent in M. balbisiana); bracts rounded at apex. |
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(6) |
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| 6 (5) |
Tepals purplish |
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5 Musa balbisiana |
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Tepals yellow or yellowish |
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5 Musa paradisiaca |
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| 7 (4) |
Margin of petiole tightly closed; compound tepal cucullate and corniculate |
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7 Musa textilis |
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Margin of petiole open or slightly closed; compound tepal neither cucullate nor corniculate. |
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(8) |
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| 8 (7) |
Free tepal nearly as long as compound tepal |
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8 Musa basjoo |
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Free tepal 1/3--1/2 as long as compound tepal. |
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(9) |
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| 9 (8) |
Inflorescence rachis glabrous |
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9 Musa formosana |
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Inflorescence rachis hairy. |
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(10) |
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| 10 (9) |
Bracts dark reddish purple, often with yellow margin and often variegated withlongitudinal, yellow stripes |
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10 Musa itinerans |
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Bracts uniformly brownish red |
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11 Musa insularimontana |
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List of lower taxa
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Treatments in Other Floras @ www.efloras.org
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