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Blumea DC.
艾納香屬
LEU, Wen-Pen & PENG, Ching-I
Annual or perennial herbs; stems simple or branched, glabrate or variously pubescent. Leaves alternate, sessile or short-petiolate, mucronate-toothed to laciniate or sometimes pinnately lobed. Heads heterogamous, disciform, solitary or paniculate. Involucre campanulate-globose, bracts numerous, imbricate or reflexed, in 4 or 5 series, outer series shortest. Receptacles glabrous or hairy. Outer florets pistillate, slender, filiform, minutely 2- or 3-toothed. Central florets bisexual, corollas often yellow, rarely white to purplish, tubular, 5-toothed. Anthers sagittate at base, tails connate, caudate-acuminate. Style branches narrow, compressed or filiform, papillate. Achenes cylindric, hirsute, terete or obscurely 4-angular or 5- or 10-ribbed. Pappus of numerous slender bristles in 1 series, white to reddish.
About 50 species in tropical Africa, Asia and Australia; ca. 12 species in Taiwan.
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KEY TO SPECIES
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| 1 |
Plants scandent; heads 10-15 mm across. |
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var. megacephala |
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Plants erect herbs or subshrubs; heads 3-6 mm across. |
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(2) |
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| 2 (1) |
Involucres glandular hairy only, involucral bracts recurved at tips. |
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Blumea aromatica |
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Involucres both glandular hairy and villous; involucral bracts appressed or ascending. |
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(3) |
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| 3 (2) |
Leaves distinctly petiolate; lobes of disc corolla purplish or pink. |
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Blumea mollis |
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Leaves sessile or subsessile; corollas yellow or rarely pinkish. |
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(4) |
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| 4 (3) |
Leaves laciniate. |
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Blumea lacera |
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Leaves dentate or doubly serrate. |
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(5) |
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| 5 (4) |
Leaf bases or petioles with small auricles. |
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(6) |
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Leaf base or petioles without auricles. |
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(7) |
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| 6 (5) |
Plants nearly glabrous; leaves herbaceous, upper surface dark green; receptacle woolly. |
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Blumea lanceolaria |
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Plants densely woolly-villous, leaves subcoriaceous, upper surface pale green; receptacle glabrous. |
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Blumea balsamifera |
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| 7 (5) |
Plants 1.5-3 m tall; leaves 30-45 cm long. |
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(8) |
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Plants less than 1.5 m tall; leaves less than 25 cm long. |
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(9) |
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| 8 (7) |
Leaves linear or linear-lanceolate, 2.5-3.5 cm wide; corolla lobes of central florets with sessile glands and sparse multicellular hairS. |
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Blumea linearis |
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Leaves obovate or lanceolate, 10-15 cm wide, corolla lobes of central florets without multi-cellular hairs. |
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Blumea conspicua |
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| 9 (7) |
Center of receptacles pubescent. |
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Blumea oblongifolia |
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Center of receptacles glabrous. |
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(10) |
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| 10 (9) |
Heads nearly sessile, densely aggregated in a compact spicate panicle. |
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Blumea hieracifolia |
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Heads pedunculate, in a loose panicle. |
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(11) |
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| 11 (10) |
Leaves oblong or broadly lanceolate, margins serrulate; achenes hairy and with sessile glands. |
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Blumea formosana |
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Leaves oblanceolate, margins doubly serrate; achenes sparsely hirsute, eglandular. |
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Blumea lacera |
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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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