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(Last Modified On 1/11/2013)
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(Last Modified On 1/11/2013)
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Species
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APIUM LEPTOPHYLLUM (Pers.) F. Muell.
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PlaceOfPublication
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Fl. Austr. 3:372. 1866.
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Synonym
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Sison Ammi Jacq. Hort. Vindob. 2:95. 1773. Not. L. 1753. Pimpinella leptophylla Pers. Syn. PI. 1: 3 24. 1 8 0 5. Helosciadium leptophyllum DC. Mem. Soc. Phys. Nat. Hist. Geneve 4:493. 1829. Apium Ammi Urban in Mart. Fl. Bras. 111:341. 1879. Apium Ammi var. leptophyllum Chodat & Wilczek, Bull. Herb. Boiss. II. 2:526. 1902. Helosciadiurn Amini Britton, Fl. Bermuda 279. 1918. Cyclospermurn leptophyllum Sprague, Jour. Bot. 61:131. 1923.
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Description
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Annual herb 0.5-6 dm. tall, alternately branched above; leaves oblong-ovate, the blade 3.5-10 cm. long, 3.5-8 cm. broad, 3-4-pinnately decompound, the ultimate divisions filiform, 1.5-7 mm. long, the petiole 2.5-11 cm. long; umbels compound or some simple, pedunculate or sessile, the peduncles to 2 cm- long; involucre and involucel lacking; rays 3-5, 1-2.2 cm. long, the pedicels 2-8 mm. long; carpophore shortly 2-cleft; fruit ovoid, 1.2-3 mm. long, 1.5-2 mm. broad.
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Specimen
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CHIRIQUI: Valley of the upper Rio Chiriqui Viejo, Peggy White 30.
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Note
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This species, originally described from the West Indies, is native to the warmer parts of the western hemisphere and has become adventive pantropically.
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