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Cyperaceae taxon details

Carex pensylvanica Lam.

1677930  (urn:lsid:marinespecies.org:taxname:1677930)

accepted
Species

Ordering

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  1. Forma Carex pensylvanica f. androgyna C.F.Wheeler ex F.J.Herm. accepted as Carex pensylvanica Lam.
  2. Forma Carex pensylvanica f. bracteata Peck accepted as Carex pensylvanica Lam.
  3. Forma Carex pensylvanica f. glumabunda (Peck) Kük. accepted as Carex pensylvanica Lam.
  4. Forma Carex pensylvanica f. gracilifolia (Peck) Kük. accepted as Carex pensylvanica Lam.
  5. Forma Carex pensylvanica f. latifolia Kük. accepted as Carex pensylvanica Lam.
  6. Forma Carex pensylvanica f. paleacea Peck accepted as Carex pensylvanica Lam.
  7. Forma Carex pensylvanica f. pensylvanica Lam. accepted as Carex pensylvanica Lam.
  8. Forma Carex pensylvanica f. separans (Peck) Kük. accepted as Carex lucorum Willd. accepted as Carex lucorum Willd. ex Link
  9. Subspecies Carex pensylvanica subsp. heliophila (Mack.) W.A.Weber accepted as Carex inops subsp. heliophila (Mack.) Crins
  10. Variety Carex pensylvanica var. amblyolepis (Trautv. & C.A.Mey.) Kük. accepted as Carex vanheurckii subsp. vanheurckii Müll.Arg.
  11. Variety Carex pensylvanica var. angustifolia Peck accepted as Carex pensylvanica Lam.
  12. Variety Carex pensylvanica var. digyna Boeckeler accepted as Carex inops subsp. heliophila (Mack.) Crins
  13. Variety Carex pensylvanica var. distans Peck accepted as Carex lucorum Willd. accepted as Carex lucorum Willd. ex Link
  14. Variety Carex pensylvanica var. glumabunda Peck accepted as Carex pensylvanica Lam.
  15. Variety Carex pensylvanica var. gracilifolia Peck accepted as Carex pensylvanica Lam.
  16. Variety Carex pensylvanica var. livoniensis Farw. accepted as Carex pensylvanica Lam.
  17. Variety Carex pensylvanica var. lucorum (Willd.) Boeckeler accepted as Carex lucorum Willd. accepted as Carex lucorum Willd. ex Link
  18. Variety Carex pensylvanica var. lucorum (Willd. ex Link) Fernald accepted as Carex lucorum Willd. accepted as Carex lucorum Willd. ex Link
  19. Variety Carex pensylvanica var. marginata Dewey accepted as Carex pensylvanica Lam.
  20. Variety Carex pensylvanica var. muehlenbergii A.Gray ex Torr. accepted as Carex albicans var. albicans Willd. ex Spreng.
  21. Variety Carex pensylvanica var. pensylvanica Lam. accepted as Carex pensylvanica Lam.
  22. Variety Carex pensylvanica var. pinicola M.E.Jones accepted as Carex pensylvanica Lam.
  23. Variety Carex pensylvanica var. separans Peck accepted as Carex lucorum Willd. accepted as Carex lucorum Willd. ex Link
  24. Variety Carex pensylvanica var. vespertina L.H.Bailey accepted as Carex inops subsp. inops L.H.Bailey
  25. Variety Carex pensylvanica var. nebulosa Barratt (uncertain > unassessed)
terrestrial
Lamarck, J.B.M. (1792). <em>Encyclopedie Methodique. Botanique.</em> 3(2): 387., available online at https://www.biodiversitylibrary.org/page/721823#page/2/mode/1up
page(s): 388 [details] OpenAccess publication
Description Plants loosely cespitose; rhizomes horizontally spreading, reddish brown to dark brown, (10–)40–100 mm, slender. Culms...  
Description Plants loosely cespitose; rhizomes horizontally spreading, reddish brown to dark brown, (10–)40–100 mm, slender. Culms 10–45 cm, smooth to weakly scabrous distally; bases (remnants of old leaves) slightly fibrous. Leaf blades green, 0.5–3.6 mm wide, herbaceous, papillose to scabrous abaxially, papillose to scabrous adaxially, blades of distal cauline leaves well developed. Inflorescences usually with both staminate and pistillate spikes; peduncles of staminate spikes 0.1–7.5 mm; proximal cauline bracts leaflike, usually shorter than inflorescences. Spikes: proximal pistillate spikes 1–3(–4) (basal spikes 0, rarely 1); cauline spikes overlapping or separated, with (3–)4–13 perigynia; staminate spikes 8–24 × 1.3–4 mm. Scales: pistillate scales dark reddish brown, with narrow white margins, ovate, 2–4 × 1.3–2.8 mm, equaling perigynium body, apex obtuse or acute to acuminate; staminate scales elliptic to ovate, 2.9–5.3 × 1.1–1.9 mm, apex obtuse or acute to acuminate. Anthers 1.8–4 mm. Perigynia pale green, veinless, obovoid, 2.2–3.4 × 1.1–1.5(–1.7) mm; beak straight, pale green, 0.5–0.9 mm, weakly ciliate-serrulate, apical teeth 0.1–0.4 mm. Stigmas 3. Achenes dark brown, obovoid, obtusely trigonous in cross section, 1.3–2.3 × 0.9–1.4(–1.6) mm. 2n = 36. [details]

Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Encycl. 3: 388 1792 to Encycl. [J. Lamarck & al.] 3(2): 388. 1792...  
Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Encycl. 3: 388 1792 to Encycl. [J. Lamarck & al.] 3(2): 388. 1792 [13 Feb 1792] , information provided by Alan E. on email Oct. 12 2020 More details could be found in [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex pensylvanica Lam.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1677930 on 2025-09-14
Date
action
by
2023-09-06 07:28:28Z
created
2024-12-10 11:47:54Z
unchecked
db_admin
2025-03-11 11:19:03Z
changed

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Nomenclature

original description Lamarck, J.B.M. (1792). <em>Encyclopedie Methodique. Botanique.</em> 3(2): 387., available online at https://www.biodiversitylibrary.org/page/721823#page/2/mode/1up
page(s): 388 [details] OpenAccess publication

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 Plants loosely cespitose; rhizomes horizontally spreading, reddish brown to dark brown, (10–)40–100 mm, slender. Culms 10–45 cm, smooth to weakly scabrous distally; bases (remnants of old leaves) slightly fibrous. Leaf blades green, 0.5–3.6 mm wide, herbaceous, papillose to scabrous abaxially, papillose to scabrous adaxially, blades of distal cauline leaves well developed. Inflorescences usually with both staminate and pistillate spikes; peduncles of staminate spikes 0.1–7.5 mm; proximal cauline bracts leaflike, usually shorter than inflorescences. Spikes: proximal pistillate spikes 1–3(–4) (basal spikes 0, rarely 1); cauline spikes overlapping or separated, with (3–)4–13 perigynia; staminate spikes 8–24 × 1.3–4 mm. Scales: pistillate scales dark reddish brown, with narrow white margins, ovate, 2–4 × 1.3–2.8 mm, equaling perigynium body, apex obtuse or acute to acuminate; staminate scales elliptic to ovate, 2.9–5.3 × 1.1–1.9 mm, apex obtuse or acute to acuminate. Anthers 1.8–4 mm. Perigynia pale green, veinless, obovoid, 2.2–3.4 × 1.1–1.5(–1.7) mm; beak straight, pale green, 0.5–0.9 mm, weakly ciliate-serrulate, apical teeth 0.1–0.4 mm. Stigmas 3. Achenes dark brown, obovoid, obtusely trigonous in cross section, 1.3–2.3 × 0.9–1.4(–1.6) mm. 2n = 36. [details]

Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Encycl. 3: 388 1792 to Encycl. [J. Lamarck & al.] 3(2): 388. 1792 [13 Feb 1792] , information provided by Alan E. on email Oct. 12 2020 More details could be found in [details]