Cyperaceae taxon details
Carex pubigluma Reznicek
1678075 (urn:lsid:marinespecies.org:taxname:1678075)
accepted
Species
terrestrial
Reznicek, A. A. (1990). Four new species of <i>Carex</i> (Cyperaceae) from Mexico, with notes on the Mexican <i>Carex</i> flora. <em>Contributions from the University of Michigan Herbarium.</em> 17: 279-293., available online at https://www.biodiversitylibrary.org/page/12875279#page/288/mode/1up
page(s): 282 [details]
page(s): 282 [details]
Holotype CAS 0001343, geounit Chiapas
Holotype CAS 0001343, geounit Chiapas [details]
Description Plants cespitose, with thick, short rhizomes; roots greyish brown, not densely felted with root hairs; fertile culms...
Description Plants cespitose, with thick, short rhizomes; roots greyish brown, not densely felted with root hairs; fertile culms 45—85 cm tall, trigonous, smooth, with glabrous, purple bladeless sheaths with stramineous veins. Leaves 6-9, mostly basal; blades 20-60 cm long, 2.9-4.8 mm wide, plicate, hispidulous on the adaxial surface above the ligule, otherwise glabrous, the margins and midrib antrorsely scabrous distally, the widest leaves ca. 3.5—4.8 mm wide; leaf sheaths 5—11 cm long, more or less tightly enveloping the culms, glabrous, stramineous or lightly purple-tinged on the midvein; inner band of sheaths finely pubescent near apex, stramineous and faintly red-dotted, faintly veined, the apex concave and finely ciliate; ligules 1.9-8.6 mm long, rounded to acute, usually reduced on upper leaves, the free portion ciliate. Vegetative shoots ca. 45-60 cm tall; leaves 4-6, similar to those of fertile culms: pseudoculms ca. 6—8.5 cm tall. Inflorescences 17-28 cm long, with the upper spikes overlapping and the lowest 2 spikes 7.5—14 cm distant; spikes single at nodes, pendulous on filiform, flexuous, smooth peduncles; lowermost spikes with peduncles 7—9 cm long, the uppermost lateral spikes with peduncles 0.8—1.1 cm long; lowermost bracts with blades 5.5—7 cm long and 1.6—2.3 cm wide and sheaths 1.5—3.4 cm long, the uppermost bracts much reduced. Spikes 5—6, the terminal staminate, the lateral androgynous. Terminal spikes 2.8-3.4 cm long, 1.9-2.7 mm wide, ca. 45—60-flowered; peduncles 4.5—13 mm long. Lateral spikes 1.9-5.3 cm long; staminate portion 0.5—1.4 cm long, ca. 4—30-flowered; pistillate portion 1.2—4.8 cm long, 3.8-5.8 mm wide, 8—30-flowered. Pistillate scales 3.6-5.8 mm long, 1.6—2 mm wide, obovate, obtuse to acute, pubescent distally on the abaxial surface and with the apex ciliate, stramineous with green center and hyaline margins, faintly reddish-brown dotted, 3—5-veined. Staminate scales 4.2—6.4 mm long, 1.4—1.8 mm wide, obovate, obtuse to acuminate, pubescent distally on the abaxial surface and with the apex ciliate, stramineous to castaneous with green center and hyaline margins, 1-3-veined. Perigynia 3.6-4.6 mm long, 1.3-1.6 mm wide, ascending and slightly outcurved when mature, trigonous with more or less flat, narrowly elliptic sides, green, pubescent on distal 2/3 of body, more or less cuneately tapered to the base, ca. 14—18-veined with 2-5 prominent and the rest faint, tapered into a beak; beaks 0.5—0.7 mm long, green, hispidulous, the apex oblique, strongly flared, hyaline, ciliate. Achenes ca. 2.6-3 mm long, 1.2—1.4 mm wide, trigonous with more or less flat, obovate sides, tightly enveloped by the perigynium, pale brown, short-stipitate. Styles withering; stigmas 3. Anthers 3, 2.3-3.8 mm long. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex pubigluma Reznicek. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1678075 on 2026-06-25
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Nomenclature
original description
Reznicek, A. A. (1990). Four new species of <i>Carex</i> (Cyperaceae) from Mexico, with notes on the Mexican <i>Carex</i> flora. <em>Contributions from the University of Michigan Herbarium.</em> 17: 279-293., available online at https://www.biodiversitylibrary.org/page/12875279#page/288/mode/1up
page(s): 282 [details]
page(s): 282 [details]
Present Inaccurate Introduced: alien Containing type locality
Holotype CAS 0001343, geounit Chiapas [details]
From editor or global species database
Biology Carex pubigluma is known only from Chiapas in pine-oak forest at 1600 m. Fruiting apparently occurs at least from late June through July. [details]Comparison This species is similar to C. mackenziana, but in addition to the differences noted in the key, is a much laxer, more slender plant with longer, narrower leaves. [details]
Description Plants cespitose, with thick, short rhizomes; roots greyish brown, not densely felted with root hairs; fertile culms 45—85 cm tall, trigonous, smooth, with glabrous, purple bladeless sheaths with stramineous veins. Leaves 6-9, mostly basal; blades 20-60 cm long, 2.9-4.8 mm wide, plicate, hispidulous on the adaxial surface above the ligule, otherwise glabrous, the margins and midrib antrorsely scabrous distally, the widest leaves ca. 3.5—4.8 mm wide; leaf sheaths 5—11 cm long, more or less tightly enveloping the culms, glabrous, stramineous or lightly purple-tinged on the midvein; inner band of sheaths finely pubescent near apex, stramineous and faintly red-dotted, faintly veined, the apex concave and finely ciliate; ligules 1.9-8.6 mm long, rounded to acute, usually reduced on upper leaves, the free portion ciliate. Vegetative shoots ca. 45-60 cm tall; leaves 4-6, similar to those of fertile culms: pseudoculms ca. 6—8.5 cm tall. Inflorescences 17-28 cm long, with the upper spikes overlapping and the lowest 2 spikes 7.5—14 cm distant; spikes single at nodes, pendulous on filiform, flexuous, smooth peduncles; lowermost spikes with peduncles 7—9 cm long, the uppermost lateral spikes with peduncles 0.8—1.1 cm long; lowermost bracts with blades 5.5—7 cm long and 1.6—2.3 cm wide and sheaths 1.5—3.4 cm long, the uppermost bracts much reduced. Spikes 5—6, the terminal staminate, the lateral androgynous. Terminal spikes 2.8-3.4 cm long, 1.9-2.7 mm wide, ca. 45—60-flowered; peduncles 4.5—13 mm long. Lateral spikes 1.9-5.3 cm long; staminate portion 0.5—1.4 cm long, ca. 4—30-flowered; pistillate portion 1.2—4.8 cm long, 3.8-5.8 mm wide, 8—30-flowered. Pistillate scales 3.6-5.8 mm long, 1.6—2 mm wide, obovate, obtuse to acute, pubescent distally on the abaxial surface and with the apex ciliate, stramineous with green center and hyaline margins, faintly reddish-brown dotted, 3—5-veined. Staminate scales 4.2—6.4 mm long, 1.4—1.8 mm wide, obovate, obtuse to acuminate, pubescent distally on the abaxial surface and with the apex ciliate, stramineous to castaneous with green center and hyaline margins, 1-3-veined. Perigynia 3.6-4.6 mm long, 1.3-1.6 mm wide, ascending and slightly outcurved when mature, trigonous with more or less flat, narrowly elliptic sides, green, pubescent on distal 2/3 of body, more or less cuneately tapered to the base, ca. 14—18-veined with 2-5 prominent and the rest faint, tapered into a beak; beaks 0.5—0.7 mm long, green, hispidulous, the apex oblique, strongly flared, hyaline, ciliate. Achenes ca. 2.6-3 mm long, 1.2—1.4 mm wide, trigonous with more or less flat, obovate sides, tightly enveloped by the perigynium, pale brown, short-stipitate. Styles withering; stigmas 3. Anthers 3, 2.3-3.8 mm long. [details]
Etymology note The epithet pubigluma refers to the pubescent pistillate and staminate scales, a convenient diagnostic feature of this species. [details]
