Olsynium scirpoideum

Plate 1 figs. a–h · 8 separate observations

Olsynium scirpoideum, photographed by Tony Rebelo — fig. b Tony Rebelo, CC BY-SA 4.0 / obs. 31080154

Olsynium scirpoideum, photographed by Javier Conejeros Gastó — fig. c Javier Conejeros Gastó, CC BY 4.0 / obs. 164095558

Olsynium scirpoideum, photographed by David Gutiérrez — fig. d David Gutiérrez, CC BY 4.0 / obs. 160887449

Olsynium scirpoideum, photographed by Nicolás Lavandero — fig. e Nicolás Lavandero, CC BY 4.0 / obs. 128255564

Olsynium scirpoideum, photographed by Matt Berger — fig. f Matt Berger, CC BY 4.0 / obs. 57981547

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 4 botanical countries

Native distribution of Olsynium scirpoideum, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.

Region	TDWG code	Continent
Argentina South	AGS	SOUTHERN AMERICA
Bolivia	BOL
Chile Central	CLC
Chile North	CLN

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 60 in flower of 64 examined

100%

90%

89%

Proportion of examined Olsynium scirpoideum in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	0	too few examined
Feb	0	0	too few examined
Mar	0	0	too few examined
Apr	0	0	too few examined
May	0	0	too few examined
Jun	0	0	too few examined
Jul	0	0	too few examined
Aug	18	18	100%	82% to 100%
Sep	28	31	90%	75% to 97%
Oct	8	9	89%	56% to 98%
Nov	3	3	too few examined
Dec	3	3	too few examined

Peak flowering in Aug. Each bar is the share of Olsynium scirpoideum observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 60 of 64 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 9 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 29 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

Bermudiana berteroana (Phil.) Kuntze
Bermudiana juncea var. floribunda (Phil.) Kuntze
Bermudiana leucantha (Colla) Kuntze
Bermudiana nuno (Colla) Kuntze
Olsynium floribundum (Phil.) Ravenna
Olsynium luridum (Ravenna) Ravenna
Olsynium scirpiforme (Poepp.) Ravenna
Sisyrinchium asperulum Phil.
Sisyrinchium berteroanum Phil.
Sisyrinchium bifolium Phil.
Sisyrinchium filiforme Steud.
Sisyrinchium floribundum Phil.
Sisyrinchium gracile Phil.
Sisyrinchium junceum var. asperulum (Phil.) Baker
Sisyrinchium junceum var. gracile (Phil.) Baker
Sisyrinchium junceum var. scirpiforme (Poepp.) L.E.Navas & Urra
Sisyrinchium leucanthum Colla
Sisyrinchium luridum Ravenna
Sisyrinchium nunna Steud.
Sisyrinchium nuno Colla
Sisyrinchium nuno var. leucanthum (Colla) Baker
Sisyrinchium scirpeum Phil.
Sisyrinchium scirpiforme Poepp.
Sisyrinchium scirpoideum Poepp.

and 5 more.

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.