Cyperaceae taxon details
Carex ×aestivaliformis Mack.
1828720 (urn:lsid:marinespecies.org:taxname:1828720)
accepted
Species
Carex aestivaliformis Mack. · alternative representation
Mackenzie, K. K. (1910). Notes on <i>Carex</i>—VI. <em>Bulletin of the Torrey Botanical Society.</em> 37(5): 231-250., available online at https://www.biodiversitylibrary.org/page/12871316
page(s): 238 [details]
page(s): 238 [details]
Description Culms densely cespitose, slender, erect or ascending, 3.5–7 dm. high, glabrous or nearly so, sharply triangular and...
Taxonomic remark Carex aestivalis M.A.Curtis ex A.Gray × Carex gracillima Schwein.
Description Culms densely cespitose, slender, erect or ascending, 3.5–7 dm. high, glabrous or nearly so, sharply triangular and roughened on the angles above, exceeding the leaves, strongly purplish-tinged at base, aphyllopodic. Well-developed blades some four or five to a fertile culm, the sheaths (especially the lower) sparsely short-pubescent, the upper not overlapping; blades glabrous or sparsely pubescent and ciliate near base, rough, 2–3.5 mm. wide, the longer about 3 dm. long, flat, ascending; spikes three or four, widely separate or slightly approximate, narrowly linear, 1.5–6 cm. long, 3.5 mm. wide, the terminal gynaecandrous, the lateral pistillate, nodding or weakly erect on long, slender, rough peduncles; lowest bract leaflet-like, short-sheathing, shorter or longer than inflorescence, the upper reduced; scales ovate, short-acuminate, acute or obtuse, several-nerved, green with hyaline margins, sometimes tinged with reddish brown, narrower than and about two thirds the length of the perigynia; perigynia oblong-ovoid, flattened-triangular in cross-section, deep green, glabrous, strongly several-nerved, 3–3.5 mm. long, 1.5 mm. wide, sessile and rounded at base, abruptly very short beaked, the beak 0.25 mm. long, minutely bidentate and hyaline-tipped; achenes triangular-obovoid, 2 mm. long, 0.75 mm. wide, not filling perigynia; style straight, slender; stigmas three. [details]
Taxonomic remark Carex aestivalis M.A.Curtis ex A.Gray × Carex gracillima Schwein.
Taxonomic remark Carex aestivalis M.A.Curtis ex A.Gray × Carex gracillima Schwein. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex ×aestivaliformis Mack.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1828720 on 2026-06-19
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Nomenclature
original description
Mackenzie, K. K. (1910). Notes on <i>Carex</i>—VI. <em>Bulletin of the Torrey Botanical Society.</em> 37(5): 231-250., available online at https://www.biodiversitylibrary.org/page/12871316
page(s): 238 [details]
page(s): 238 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Culms densely cespitose, slender, erect or ascending, 3.5–7 dm. high, glabrous or nearly so, sharply triangular and roughened on the angles above, exceeding the leaves, strongly purplish-tinged at base, aphyllopodic. Well-developed blades some four or five to a fertile culm, the sheaths (especially the lower) sparsely short-pubescent, the upper not overlapping; blades glabrous or sparsely pubescent and ciliate near base, rough, 2–3.5 mm. wide, the longer about 3 dm. long, flat, ascending; spikes three or four, widely separate or slightly approximate, narrowly linear, 1.5–6 cm. long, 3.5 mm. wide, the terminal gynaecandrous, the lateral pistillate, nodding or weakly erect on long, slender, rough peduncles; lowest bract leaflet-like, short-sheathing, shorter or longer than inflorescence, the upper reduced; scales ovate, short-acuminate, acute or obtuse, several-nerved, green with hyaline margins, sometimes tinged with reddish brown, narrower than and about two thirds the length of the perigynia; perigynia oblong-ovoid, flattened-triangular in cross-section, deep green, glabrous, strongly several-nerved, 3–3.5 mm. long, 1.5 mm. wide, sessile and rounded at base, abruptly very short beaked, the beak 0.25 mm. long, minutely bidentate and hyaline-tipped; achenes triangular-obovoid, 2 mm. long, 0.75 mm. wide, not filling perigynia; style straight, slender; stigmas three. [details]Taxonomic remark Carex aestivalis M.A.Curtis ex A.Gray × Carex gracillima Schwein. [details]
To Biodiversity Heritage Library (1 publication) (from synonym Carex aestivaliformis Mack.)
To International Plant Names Index (IPNI) (from synonym Carex aestivaliformis Mack.)
To Plants of the World Online (from synonym Carex aestivaliformis Mack.)
To International Plant Names Index (IPNI) (from synonym Carex aestivaliformis Mack.)
To Plants of the World Online (from synonym Carex aestivaliformis Mack.)
