Scirpus pterolepis (Nees) Kunth:
Gabon (Africa & Madagascar)
Madagascar (Africa & Madagascar)
Comoros (Africa & Madagascar)

Scirpus lacustris L.:
Argentina (South America)
United States (North America)
Caribbean (Caribbean)
Canada (North America)
China (Asia)
Mexico (Mesoamerica)

Schoenoplectus lacustris (L.) Palla:
Afghanistan (Asia)
India (Asia)
Kyrgyzstan (Asia)
Kazakhstan (Asia)
Mongolia (Asia)
Pakistan (Asia)
Russian Federation (Asia)
Tajikistan (Asia)
Turkmenistan (Asia)
Uzbekistan (Asia)
China (Asia)

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Perennial, 50-150 cm. Rhizome horizontal, 7-8 mm diam. Stem 3-10 mm diam., terete, soft. Sheaths up to 40 cm, soft, mouth oblique, margins scarious; blades normally reduced to mucro on tip of oblique mouth margin of sheaths, sometimes, esp. when submerged, up to 30 mm, or longer, channelled, pointed. Inflorescence 50-90 mm, pseudolateral multiple spike or small anthelodium; lowest bract 33-55 mm, erect, thick, almost terete, adaxial surface present as narrow strip, apex acute; primary branches c. 8, up to 60 mm, scabrous; each supported by glume-like bract, up to 15 mm, truncate, margins scarious, often fringed; tubular prophyll to c. 10 mm, binerved, sterile, mouth oblique, widely scarious, often fringed; secondary multiple spikes with 2-12 spikes; secondary branches to 17 mm. Spikes 4-10 x 2-5 mm, ovoid; glumes 2.8-4.3 mm, widely cymbiform, mid-nerve extending into smooth or barbed mucro up to 0.7 mm, margins widely scarious, apex rounded, fringed. Perianth bristles 5-7, equalling nut or slightly longer, reddish brown; stamens (2-)3, anthers 1.5-2.7 mm, with reddish brown, barbed connective tip; stigmas 2 or 3. Nut 1.6-2.7 x 1.1-1.8 mm, obovoid, bi-convex or triangular, plano-convex, apiculate, finely reticulate.

Scirpus lacustris L., Sp. Pl. 1: 48. 1753; C.B.Clarke, l.c. 568; R. R. Stewart, l.c. 101; Nyárády in Fl. Rep. Soc. Romania 11: Pl. 114. 1966.

Foodplant / saprobe
superficial, sessile apothecium of Coleosperma lacustre is saprobic on submerged, dead stem of Schoenoplectus lacustris

Foodplant / feeds on
larva of Donacia aquatica feeds on root of Schoenoplectus lacustris

Plant / resting place / among
cocoon of Donacia bicolora may be found among roots of Schoenoplectus lacustris

Foodplant / feeds on
larva of Donacia impressa feeds on root of Schoenoplectus lacustris

Foodplant / saprobe
conidioma of Leptostroma coelomycetous anamorph of Hypohelion scirpinum is saprobic on dead stem of Schoenoplectus lacustris

Foodplant / saprobe
immersed, becoming exposed by lifting of operculum apothecium of Hysterostegiella fenestrata is saprobic on dead stem of Schoenoplectus lacustris
Remarks: season: 8

Plant / resting place / among
subaquatic cocoon of Macroplea appendiculata may be found among roots of Schoenoplectus lacustris

Foodplant / saprobe
colony of Alternaria dematiaceous anamorph of Macrospora scirpicola is saprobic on dead, standing stem of Schoenoplectus lacustris
Remarks: season: 9-5

Foodplant / saprobe
immersed pseudothecium of Massariosphaeria scirpina is saprobic on dead stem of Schoenoplectus lacustris

Foodplant / saprobe
immersed pseudothecium of Metasphaeria mosana is saprobic on rotten, dead stem of Schoenoplectus lacustris

Foodplant / parasite
pustular Myriconium dematiaceous anamorph of Myriosclerotinia scirpicola parasitises live stem (just below inflorescence) of Schoenoplectus lacustris
Remarks: season: summer

Foodplant / saprobe
stalked, occasionally sessile sporodochium of Myrothecium dematiaceous anamorph of Myrothecium cinctum is saprobic on stem leaf of Schoenoplectus lacustris
Remarks: season: 3-5

Foodplant / saprobe
gregarious, immersed pseudothecium of Phaeosphaeria sowerbyi is saprobic on dead stem of Schoenoplectus lacustris

In Great Britain and/or Ireland:
Foodplant / saprobe
amphigenous colony of Arthrinium dematiaceous anamorph of Physalospora scirpi is saprobic on often dry, bleached, dead leaf of Schoenoplectus lacustris
Other: minor host/prey

Plant / resting place / among
cocoon of Plateumaris sericea may be found among root of Schoenoplectus lacustris

Foodplant / spot causer
colony of Pseudocercosporella anamorph of Pseudocercosporella scirpi causes spots on live stem of Schoenoplectus lacustris

Foodplant / parasite
telium of Puccinia scirpi parasitises live Schoenoplectus lacustris

Foodplant / saprobe
scattered, covered, pale brown, pore darker pycnidium of Septoria coelomycetous anamorph of Septoria dolichospora is saprobic on dead, drifted stem of Schoenoplectus lacustris
Remarks: season: 5

Foodplant / saprobe
fruitbody of Sistotrema oblongisporum is saprobic on dead, decayed debris of Schoenoplectus lacustris

Foodplant / saprobe
immersed pycnidium of Stagonospora coelomycetous anamorph of Stagonospora aquatica is saprobic on dead stem of Schoenoplectus lacustris
Remarks: season: 7-9

Distribution: All Europe, east to Japan, in the south to Turkey, Caucasus, Iran, Afghanistan, Pakistan and Kashmir.

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Species: 4
Species With Barcodes: 1

United States

Rounded National Status Rank: NNA - Not Applicable

Rounded Global Status Rank: GNR - Not Yet Ranked