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(Last Modified On 6/20/2013)
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(Last Modified On 6/20/2013)
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Genus
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Schistocarpha Less.
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PlaceOfPublication
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Linnaea 6: 409. 1831.
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Note
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TYPE: S. bicolor Less.
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Description
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Large coarse herbs or subshrubs. Leaves opposite, distinctly or weakly connate- clasping at the nodes, the uppermost leaf blades basally attenuate into a weakly- winged petiole. Inflorescence a conglomerate corymbiform to paniculate cyme composed of many terminal and upper-axillary cymules. Heads radiate or disciform; involucral bracts imbricate in 3-4 series; receptacle convex to hemi- spherical or even conical; paleas abundant, unequal; ray florets fertile, small, numerous, in 1-2 series, the ligule short, thin and inconspicuous, or sometimes well developed; disc florets numerous, fertile, the anther bases weakly sagittate, the style branches slender, abruptly terminated in a small, tufted crest of hairs. Achenes terete or weakly ribbed, glabrous.
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Habit
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herbs or subshrubs
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Key
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a. Ray florets inconspicuous in 1-2 series; ligules erect or weakly reflexed-spreading, 1 mm long or less; widespread species ...... 2. S. oppositifolia aa. Ray florets prominent in ca. 3 series; ligules regularly spreading at right angles to the tube, 2-5 mm long; Chiriqui species ...... 1. S. croatii
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