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(Last Modified On 7/9/2013)
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(Last Modified On 7/9/2013)
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Species
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Utricularia subulata L.
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PlaceOfPublication
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Sp. P1. 18. 1753.
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Note
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TYPE: Virginia, Clayton (BM, holotype).
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Description
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Annual or perhaps perennial terrestrial herbs; stolons capillary, subterranean, bearing a photosynthetic organ and traps. Photosynthetic organs narrowly linear, 1-nerved, sometimes numerous and conspicuous but often ? decayed at anthesis, to 20 mm long and 0.5 mm wide. Traps obliquely ovoid, stalked, 0.2-0.5 mm long, the mouth lateral, the upper lip with 2 subulate sparsely branched ap- pendages. Inf lorescences to 25 cm long; peduncle capillary, 1-25-flowered; bracts peltate, orbicular to elliptic, the sterile scales numerous on the peduncle below the raceme; pedicels ascending, 2-10 mm long. Flowers with the calyx lobes + ovate, subequal; corolla yellow, usually 6-10 mm long but much reduced in cleistogamous flowers, the upper lip broadly ovate, entire, the lower lip deeply 3-lobed, the palate conspicuously bigibbous, the spur subulate, obtuse, descend- ing, about as long as the lower lip. Capsules globose, ca. 1.5 mm long, dehiscing by an abaxial ovate pore; seeds ovoid, ca. 0.25 mm long with ca. 15 longitudinal striations.
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Habit
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herbs
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Distribution
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This species is distributed from eastern North America to Argentina, Portugal, tropical and South Africa, Madagascar, Thailand, Malaya, and Borneo.
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Note
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Perhaps the commonest of all Utricularia species, U. subulata may be more frequent and widespread in Panama than indicated by the collections. It is as conspicuous as U. pusilla, which is represented by numerous specimens. Gibson (1974: 328) implied that U. subulata and U. pusilla are not two dis- tinct species, but the two are different. The sterile bracts on the inflorescence axis of U. pusilla are diagnostic; in addition the corolla, calyx, seeds, traps, and photosynthetic organs are significantly and constantly different in the two species.
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Specimen
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COCLE: Penonome, llanos outside of town, Ebinger 1014 (F, K, US-in part). PANAMA: E side of Cerro Campana, 600-650 m, Nee 6847 (K, MO).
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