Cyperaceae taxon details
Carex haematopus Jim.Mejías & Roalson
1677847 (urn:lsid:marinespecies.org:taxname:1677847)
accepted
Species
terrestrial
Jiménez-Mejías, P.; Roalson, E. H. (2016). Two new species of Carex (Cyperaceae) from northern South America. Phytotaxa, 266(1): 21-26., available online at https://doi.org/10.11646/phytotaxa.266.1.3
page(s): 23 [details]
page(s): 23 [details]
Holotype NY 02840461, geounit Colombia
Holotype NY 02840461, geounit Colombia [details]
Description Perennial; rhizomes unknown, apparently long. Stems 61–34 cm tall, 1.2–0.8 mm wide at the middle, smooth, sharply...
Taxonomic remark Source in seed data: ipni Update namepublishedIn from Phytotaxa 266(1): 23. 2016 [17 Jun 2016] [epublished] to Phytotaxa...
Description Perennial; rhizomes unknown, apparently long. Stems 61–34 cm tall, 1.2–0.8 mm wide at the middle, smooth, sharply trigonous. Leaves flat or V folded, apparently longer than the stems, >50 cm long, 2.5–2 mm wide at the middle, hypostomatic, antrorsely scabrid at the margins, apparently light green; ligule 4–2.5 mm long, acute to subacute, orangey; sheaths reddish tinged, more intense as lower the leaf is, with the apical opening translucent-orangey on the
side opposite to the blade; basal sheaths purple reddish, present at the base of the flowering and sterile shoots, ~10 cm long, entire, without blade, splitting into a ladder-fibrosille structure. Inflorescence racemose, 20–13 cm long, with 2–3 proximal female spikes, and a terminal male spike; lowermost bract longer than the inflorescence, 25–12 cm long, 2.4–1.4 mm wide at the middle, flat to V folded, sheathless or with a sheath up to 7 mm long, with a small pair of auricles ~0.4 mm on the side opposite to the blade, dark-brown with a hyaline margin; second lowermost bract 8.5–5.5 mm long, 1–0.5 mm wide in its middle part, flat to filiform, sheathless, also with similar auricles at its base. Male spike oblanceolate, 3.7–3 cm long, with a maximum width of 3–2.5 mm, with about 80 flowers. Lowermost female spikes 17–14 × 5 mm, ovate to lanceolate, with a peduncle 3.5–3 mm long, with ~20–40 flowers, and a tubular cladoprophyll at its base. Male glumes 4.2–4 × 1.3 mm, narrowly obovoid, reddish brownish with a lighter 1–3-nerved middle longitudinal strip, obtuse to rounded, cuspidate, with a mucro 0.3–0.1 mm long. Female glumes 2.7–2 × 1.6–1.2 mm, oblong, acute, purplish-brown, with a lighter 1–3 nerved middle longitudinal strip, excurrent into an antrorsely scabrid 0.6–0.2 mm mucro. Stigmas 3, purplish, hispidolous. Utricles 3.5–3.2 × 1.4–1.2 mm, broadly elliptical, with thick walls, reddish-orange, densely pubescent, with nerves marked but hardly visible below the hairs, cuneated at the base, contracted at the apex into a wide 0.8–0.6 × 0.5–0.4 mm beak, purplish tinged, deeply bifid, with the apical teeth 0.6–0.3 mm long, divergent, forming a wide sinus from acute to almost rounded; pubescence of whitish hairs about 0.2–0.1 mm long, more densely distributed towards the apex of the utricle body, being the base and the beak glabrous. Achenes 2.2–1.6 × 0.9–0.8 mm, elliptical, trigonous, cuneated at the base, sometimes ±contracted forming a short stipe; style strongly lignified, leaving a long cylindrical, 0.2 mm wide remnant at the apex of the achene. [details]
side opposite to the blade; basal sheaths purple reddish, present at the base of the flowering and sterile shoots, ~10 cm long, entire, without blade, splitting into a ladder-fibrosille structure. Inflorescence racemose, 20–13 cm long, with 2–3 proximal female spikes, and a terminal male spike; lowermost bract longer than the inflorescence, 25–12 cm long, 2.4–1.4 mm wide at the middle, flat to V folded, sheathless or with a sheath up to 7 mm long, with a small pair of auricles ~0.4 mm on the side opposite to the blade, dark-brown with a hyaline margin; second lowermost bract 8.5–5.5 mm long, 1–0.5 mm wide in its middle part, flat to filiform, sheathless, also with similar auricles at its base. Male spike oblanceolate, 3.7–3 cm long, with a maximum width of 3–2.5 mm, with about 80 flowers. Lowermost female spikes 17–14 × 5 mm, ovate to lanceolate, with a peduncle 3.5–3 mm long, with ~20–40 flowers, and a tubular cladoprophyll at its base. Male glumes 4.2–4 × 1.3 mm, narrowly obovoid, reddish brownish with a lighter 1–3-nerved middle longitudinal strip, obtuse to rounded, cuspidate, with a mucro 0.3–0.1 mm long. Female glumes 2.7–2 × 1.6–1.2 mm, oblong, acute, purplish-brown, with a lighter 1–3 nerved middle longitudinal strip, excurrent into an antrorsely scabrid 0.6–0.2 mm mucro. Stigmas 3, purplish, hispidolous. Utricles 3.5–3.2 × 1.4–1.2 mm, broadly elliptical, with thick walls, reddish-orange, densely pubescent, with nerves marked but hardly visible below the hairs, cuneated at the base, contracted at the apex into a wide 0.8–0.6 × 0.5–0.4 mm beak, purplish tinged, deeply bifid, with the apical teeth 0.6–0.3 mm long, divergent, forming a wide sinus from acute to almost rounded; pubescence of whitish hairs about 0.2–0.1 mm long, more densely distributed towards the apex of the utricle body, being the base and the beak glabrous. Achenes 2.2–1.6 × 0.9–0.8 mm, elliptical, trigonous, cuneated at the base, sometimes ±contracted forming a short stipe; style strongly lignified, leaving a long cylindrical, 0.2 mm wide remnant at the apex of the achene. [details]
Taxonomic remark Source in seed data: ipni Update namepublishedIn from Phytotaxa 266(1): 23. 2016 [17 Jun 2016] [epublished] to Phytotaxa...
Taxonomic remark Source in seed data: ipni Update namepublishedIn from Phytotaxa 266(1): 23. 2016 [17 Jun 2016] [epublished] to Phytotaxa 266: 23 (2016), information provided by Alan E. on email Jun. 07 2021 [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex haematopus Jim.Mejías & Roalson. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1677847 on 2025-09-13
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2024-12-10 11:47:54Z
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Nomenclature
original description
Jiménez-Mejías, P.; Roalson, E. H. (2016). Two new species of Carex (Cyperaceae) from northern South America. Phytotaxa, 266(1): 21-26., available online at https://doi.org/10.11646/phytotaxa.266.1.3
page(s): 23 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 23 [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
Holotype NY 02840461, geounit Colombia [details]
From editor or global species database
Description Perennial; rhizomes unknown, apparently long. Stems 61–34 cm tall, 1.2–0.8 mm wide at the middle, smooth, sharply trigonous. Leaves flat or V folded, apparently longer than the stems, >50 cm long, 2.5–2 mm wide at the middle, hypostomatic, antrorsely scabrid at the margins, apparently light green; ligule 4–2.5 mm long, acute to subacute, orangey; sheaths reddish tinged, more intense as lower the leaf is, with the apical opening translucent-orangey on theside opposite to the blade; basal sheaths purple reddish, present at the base of the flowering and sterile shoots, ~10 cm long, entire, without blade, splitting into a ladder-fibrosille structure. Inflorescence racemose, 20–13 cm long, with 2–3 proximal female spikes, and a terminal male spike; lowermost bract longer than the inflorescence, 25–12 cm long, 2.4–1.4 mm wide at the middle, flat to V folded, sheathless or with a sheath up to 7 mm long, with a small pair of auricles ~0.4 mm on the side opposite to the blade, dark-brown with a hyaline margin; second lowermost bract 8.5–5.5 mm long, 1–0.5 mm wide in its middle part, flat to filiform, sheathless, also with similar auricles at its base. Male spike oblanceolate, 3.7–3 cm long, with a maximum width of 3–2.5 mm, with about 80 flowers. Lowermost female spikes 17–14 × 5 mm, ovate to lanceolate, with a peduncle 3.5–3 mm long, with ~20–40 flowers, and a tubular cladoprophyll at its base. Male glumes 4.2–4 × 1.3 mm, narrowly obovoid, reddish brownish with a lighter 1–3-nerved middle longitudinal strip, obtuse to rounded, cuspidate, with a mucro 0.3–0.1 mm long. Female glumes 2.7–2 × 1.6–1.2 mm, oblong, acute, purplish-brown, with a lighter 1–3 nerved middle longitudinal strip, excurrent into an antrorsely scabrid 0.6–0.2 mm mucro. Stigmas 3, purplish, hispidolous. Utricles 3.5–3.2 × 1.4–1.2 mm, broadly elliptical, with thick walls, reddish-orange, densely pubescent, with nerves marked but hardly visible below the hairs, cuneated at the base, contracted at the apex into a wide 0.8–0.6 × 0.5–0.4 mm beak, purplish tinged, deeply bifid, with the apical teeth 0.6–0.3 mm long, divergent, forming a wide sinus from acute to almost rounded; pubescence of whitish hairs about 0.2–0.1 mm long, more densely distributed towards the apex of the utricle body, being the base and the beak glabrous. Achenes 2.2–1.6 × 0.9–0.8 mm, elliptical, trigonous, cuneated at the base, sometimes ±contracted forming a short stipe; style strongly lignified, leaving a long cylindrical, 0.2 mm wide remnant at the apex of the achene. [details]
Taxonomic remark Source in seed data: ipni Update namepublishedIn from Phytotaxa 266(1): 23. 2016 [17 Jun 2016] [epublished] to Phytotaxa 266: 23 (2016), information provided by Alan E. on email Jun. 07 2021 [details]
To International Plant Names Index (IPNI)
To New York Botanical Garden Steere Herbarium (Carex_haematopus_NY2840461_holotype_1)
To Plants of the World Online
To New York Botanical Garden Steere Herbarium (Carex_haematopus_NY2840461_holotype_1)
To Plants of the World Online
From editor or global species database
Hosted externally
