Cyperaceae taxon details
Carex michoacana Reznicek, Hipp & S.González
1676260 (urn:lsid:marinespecies.org:taxname:1676260)
accepted
Species
terrestrial
Reznicek, A. A.; Hipp, A. L.; González-Elizondo, M. S. (2007). Taxonomy, Ecology, and Biogeography of Carex section Ovales in Indian. Contributions from the University of Michigan Herbarium, 25: 225-230., available online at https://www.biodiversitylibrary.org/page/12697807#page/231/mode/1up
page(s): 225 [details]
page(s): 225 [details]
Description Loosely cespitose in small clumps from short, thick, woody rhizomes; rhizomes elongating with age: fertile culms ca. 55-83...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Contr. Univ. Michigan Herb. 25: 225 (-228; fig. 1). 2007 [13 Aug 2007] ...
Description Loosely cespitose in small clumps from short, thick, woody rhizomes; rhizomes elongating with age: fertile culms ca. 55-83 cm tall, erect, trigonous, sometimes flattened below, sparsely scabrous-angled below inflorescence; bladeless basal sheaths dark brown, disintegrating into short fibers. Leaves 5-8, on the lower 2/5—1/2 of the culm; blades 2-30 cm long, 1.5—3.1 mm wide, plicate or flat, glabrous, the margins and midrib antrorsely scabrous distally; leaf sheaths ca. 3-8 cm long, tightly enveloping culms, smooth, green, larger sheaths with the intervenal areas pale whitish green with scattered, more or less horizontal green septae on the upper portion; the inner band of sheaths glabrous, green with a prominent whitish hyaline zone, the apex concave, more or less equaling the base of the blade, whitish hyaline; ligules 3.2-6.8 mm long, obtuse, the free portion entire to finely erose and up to 0.4 mm long. Vegetative culms annual, few, fully developed only after perigynia are largely shed, ca. 12-15 cm tall with ca. 5—9 leaves mostly clustered near the summit of the culm. Inflorescences ca. 2.5—3.8 cm long, erect, the spikes overlapping or the lowermost slightly separate, the lowest spikes ca. 7-12 mm distant, spikes single at nodes, sessile; lowermost bracts bristle-like, ca. 0.8—5.4 cm long, often inconspicuous, sheathless, upper bracts much reduced: spikes 3-4 (5), gynecandrous, orbicular to ovoid with rounded bases or the uppermost with a short-clavate base, 9-14 mm long, pistillate portion 8-11 x 8.5-11.5 mm, ca. 20-40-flowered, staminate portion I-3 x 1.5—2 mm, ca. 3-6-flowered. Pistillate scales 3.8—4 x 1.5-1.7 mm, + reaching the base of the beak, narrowly ovate, acute, the midvein excurrent as a scabrous awn 0.1-0.6 mm long, whitish hyaline with a pale brown or stramineous, l-veined center. Staminate scales ca. 3.84.4 x 1.6-2 mm, ovate, acute, the midvein excurrent as a scabrous awn 0).2-1.2 mm long, whitish hyaline with a pale brown or stramineous, |-veined center. Perigynia glabrous, sessile, ca. 5.2—5.8 x 2.9-3.5 mm wide, 1.6—1.8 times as long as wide, + spreading, herbaceous, + translucent over achene; bodies broadly elliptic or + orbicular, 3.64 mm long, 1-1.2 times as long as wide, 1.9-2.7 times as long as the beak, and widest 1.6-2 mm above base, broadly thin-winged with wings 0.8-1.2 mm wide, finely serrulate-margined above the middle, contracted into a beak, yellowish green to stramineous with paler margins, nerveless adaxially and abaxially over the achene, 1—-2-nerved in the wings; beaks 1.4-1.9 mm long, strongly flattened and serrulate-margined to apex, the apex bidentate with scabrous-margined teeth 0.6-1.1 mm long. Achenes 2.4—2.7 x 1.1-1.35 mm, 1.8-2.5 times as long as wide, biconvex, narrowly ovate to narrowly oblong, pale brown to brown, short-stipitate at base, apiculum 0.4-0.5 mm long; style straight; stigmas 2. Anthers 3, ca. 1.5-2.2 mm long. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Contr. Univ. Michigan Herb. 25: 225 (-228; fig. 1). 2007 [13 Aug 2007] ...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Contr. Univ. Michigan Herb. 25: 225 (-228; fig. 1). 2007 [13 Aug 2007] to Contr. Univ. Michigan Herb. 25: 225 (2007), information provided by Alan E. on email Jun. 07 2021 More details could be found [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex michoacana Reznicek, Hipp & S.González. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676260 on 2025-09-13
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Nomenclature
original description
Reznicek, A. A.; Hipp, A. L.; González-Elizondo, M. S. (2007). Taxonomy, Ecology, and Biogeography of Carex section Ovales in Indian. Contributions from the University of Michigan Herbarium, 25: 225-230., available online at https://www.biodiversitylibrary.org/page/12697807#page/231/mode/1up
page(s): 225 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 225 [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
Isotype NY 01186073, geounit Mexico [details]
From editor or global species database
Description Loosely cespitose in small clumps from short, thick, woody rhizomes; rhizomes elongating with age: fertile culms ca. 55-83 cm tall, erect, trigonous, sometimes flattened below, sparsely scabrous-angled below inflorescence; bladeless basal sheaths dark brown, disintegrating into short fibers. Leaves 5-8, on the lower 2/5—1/2 of the culm; blades 2-30 cm long, 1.5—3.1 mm wide, plicate or flat, glabrous, the margins and midrib antrorsely scabrous distally; leaf sheaths ca. 3-8 cm long, tightly enveloping culms, smooth, green, larger sheaths with the intervenal areas pale whitish green with scattered, more or less horizontal green septae on the upper portion; the inner band of sheaths glabrous, green with a prominent whitish hyaline zone, the apex concave, more or less equaling the base of the blade, whitish hyaline; ligules 3.2-6.8 mm long, obtuse, the free portion entire to finely erose and up to 0.4 mm long. Vegetative culms annual, few, fully developed only after perigynia are largely shed, ca. 12-15 cm tall with ca. 5—9 leaves mostly clustered near the summit of the culm. Inflorescences ca. 2.5—3.8 cm long, erect, the spikes overlapping or the lowermost slightly separate, the lowest spikes ca. 7-12 mm distant, spikes single at nodes, sessile; lowermost bracts bristle-like, ca. 0.8—5.4 cm long, often inconspicuous, sheathless, upper bracts much reduced: spikes 3-4 (5), gynecandrous, orbicular to ovoid with rounded bases or the uppermost with a short-clavate base, 9-14 mm long, pistillate portion 8-11 x 8.5-11.5 mm, ca. 20-40-flowered, staminate portion I-3 x 1.5—2 mm, ca. 3-6-flowered. Pistillate scales 3.8—4 x 1.5-1.7 mm, + reaching the base of the beak, narrowly ovate, acute, the midvein excurrent as a scabrous awn 0.1-0.6 mm long, whitish hyaline with a pale brown or stramineous, l-veined center. Staminate scales ca. 3.84.4 x 1.6-2 mm, ovate, acute, the midvein excurrent as a scabrous awn 0).2-1.2 mm long, whitish hyaline with a pale brown or stramineous, |-veined center. Perigynia glabrous, sessile, ca. 5.2—5.8 x 2.9-3.5 mm wide, 1.6—1.8 times as long as wide, + spreading, herbaceous, + translucent over achene; bodies broadly elliptic or + orbicular, 3.64 mm long, 1-1.2 times as long as wide, 1.9-2.7 times as long as the beak, and widest 1.6-2 mm above base, broadly thin-winged with wings 0.8-1.2 mm wide, finely serrulate-margined above the middle, contracted into a beak, yellowish green to stramineous with paler margins, nerveless adaxially and abaxially over the achene, 1—-2-nerved in the wings; beaks 1.4-1.9 mm long, strongly flattened and serrulate-margined to apex, the apex bidentate with scabrous-margined teeth 0.6-1.1 mm long. Achenes 2.4—2.7 x 1.1-1.35 mm, 1.8-2.5 times as long as wide, biconvex, narrowly ovate to narrowly oblong, pale brown to brown, short-stipitate at base, apiculum 0.4-0.5 mm long; style straight; stigmas 2. Anthers 3, ca. 1.5-2.2 mm long. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Contr. Univ. Michigan Herb. 25: 225 (-228; fig. 1). 2007 [13 Aug 2007] to Contr. Univ. Michigan Herb. 25: 225 (2007), information provided by Alan E. on email Jun. 07 2021 More details could be found [details]
