Cyperaceae taxon details
Carex phylloscirpoides Saldivia, S.Gebauer, Martín-Bravo & Jim.Mejías
1677964 (urn:lsid:marinespecies.org:taxname:1677964)
accepted
Species
terrestrial
Jiménez-Mejías, P.; Saldivia, P.; Gebauer, S.; Martín-Bravo, S. (2021). A new remarkable dwarf sedge (Carex phylloscirpoides, Cyperaceae) from Northern Chile, with insights on the evolution of austral Carex section Racemosae. Systematic Botany, 46(1): 34-47.
page(s): 44 [details]
page(s): 44 [details]
Holotype SGO 170084, geounit Tarapacá
Holotype SGO 170084, geounit Tarapacá [details]
Description Perennial, acaulescent, diminutive, forming tight mats intermixed with other plants; rhizomes stoloniferous, rooting only...
Description Perennial, acaulescent, diminutive, forming tight mats intermixed with other plants; rhizomes stoloniferous, rooting only at some nodes, thin, about 1 mm thick, elongate, loosely covered by disintegrating remains of old leaf sheaths; roots fibrous, slightly succulent. Leaves up to 15 mm long including sheaths, widest ones 2 mm wide, linear-deltoid, flat to conduplicate, mid-vein well marked, +/- rigid, margins antrorsely scabrid, abaxial surface glabrous or with some scattered diminutive trichomes along secondary veins; sheath up to 5 mm long, hyaline with a mid-vein and three to four secondary parallel veins equally distant extending to the limb; ligule absent. Inflorescence a single androgynous spike concealed by the leaves, ovate-oblong, 7 mm long, the female part 3 mm long and 2.8 mm at its widest, with the utricles ascending, +/- adpressed, the male part 4 mm long and 1 mm wide. Pistillate glumes 6–6.5 x 1.5 mm, lanceolate, much longer than the utricles, hyaline to stramineous, sometimes brownish distally, 1–3-veined, acuminate, attenuated to- wards the apex and tipped by a 0.4–0.6 mm long mucro. Staminate glumes 4.6 x 1.6 mm, oblong-lanceolate, brownish, with broad hyaline margins, 1-veined, acuminate, attenuated towards the apex and tipped by a 0.3–0.6 long mucro. Utricles 2.4 x 1.2 mm, elliptic, plano-convex, whitish, greenish distally, cuneate at base, with distal margins flattened, +/- winged, and scabrid, surface minutely papillose or glabrous, +/- gradually attenuated at apex into a short beak; beak about 0.5 mm long, scabrid, bifid, the sinus up to 0.4 mm deep. Stigmas 3. Nutlets 1.6 x 1.1 mm, filling most the utricle lumen, broadly elliptical, trigonous, brownish, attenuated into a 0.4 mm stipitate base, and tipped by the short truncate remain of the style, up to 0.2 mm long. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex phylloscirpoides Saldivia, S.Gebauer, Martín-Bravo & Jim.Mejías. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1677964 on 2025-04-24
Date
action
by
2024-12-10 11:47:54Z
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db_admin
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Nomenclature
original description
Jiménez-Mejías, P.; Saldivia, P.; Gebauer, S.; Martín-Bravo, S. (2021). A new remarkable dwarf sedge (Carex phylloscirpoides, Cyperaceae) from Northern Chile, with insights on the evolution of austral Carex section Racemosae. Systematic Botany, 46(1): 34-47.
page(s): 44 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 44 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Perennial, acaulescent, diminutive, forming tight mats intermixed with other plants; rhizomes stoloniferous, rooting only at some nodes, thin, about 1 mm thick, elongate, loosely covered by disintegrating remains of old leaf sheaths; roots fibrous, slightly succulent. Leaves up to 15 mm long including sheaths, widest ones 2 mm wide, linear-deltoid, flat to conduplicate, mid-vein well marked, +/- rigid, margins antrorsely scabrid, abaxial surface glabrous or with some scattered diminutive trichomes along secondary veins; sheath up to 5 mm long, hyaline with a mid-vein and three to four secondary parallel veins equally distant extending to the limb; ligule absent. Inflorescence a single androgynous spike concealed by the leaves, ovate-oblong, 7 mm long, the female part 3 mm long and 2.8 mm at its widest, with the utricles ascending, +/- adpressed, the male part 4 mm long and 1 mm wide. Pistillate glumes 6–6.5 x 1.5 mm, lanceolate, much longer than the utricles, hyaline to stramineous, sometimes brownish distally, 1–3-veined, acuminate, attenuated to- wards the apex and tipped by a 0.4–0.6 mm long mucro. Staminate glumes 4.6 x 1.6 mm, oblong-lanceolate, brownish, with broad hyaline margins, 1-veined, acuminate, attenuated towards the apex and tipped by a 0.3–0.6 long mucro. Utricles 2.4 x 1.2 mm, elliptic, plano-convex, whitish, greenish distally, cuneate at base, with distal margins flattened, +/- winged, and scabrid, surface minutely papillose or glabrous, +/- gradually attenuated at apex into a short beak; beak about 0.5 mm long, scabrid, bifid, the sinus up to 0.4 mm deep. Stigmas 3. Nutlets 1.6 x 1.1 mm, filling most the utricle lumen, broadly elliptical, trigonous, brownish, attenuated into a 0.4 mm stipitate base, and tipped by the short truncate remain of the style, up to 0.2 mm long. [details]Diagnosis This new species superficially resembles acaulescent species of Carex sect. Junciformes (e.g. C. argentina Barros or C. nelmesiana Barros) or unispicate forms of the C. phalaroides Kunth group. From the first set of species it can be easily distinguished by the flat to plicate leaves (vs. acaulescent species of Carex sect. Junciformes displaying convolute to subterete leaves; e.g. Barros 1969; Wheeler 1986b). From the second group of species it is readily differentiated by the utricles, which are glabrous or minutely papillose, with flattened, narrowly winged, scabrid distal margins and a conspicuously bifid beak (vs. species of the C. phalaroides group that bear hispidulous to muricate utricles, with distal margins not flattened or winged nor scabrid and with beak truncate to obscurely bifid; Hoff-Silveira and Longhi-Wagner 2012; Jiménez-Mejías and Silva 2020). The unispicate inflorescence and the flattened, winged, scabrid distal margin of the utricles are characteristics that are shared with the caulescent southern Andean species of C. sect. Racemosae (Kükenthal 1899, 1909; Kalela 1940; Wheeler 1986a, 1990; Gebauer et al. 2015). [details]
