Plate 1 figs. a–h · 4 observations
This species has been photographed under an open licence only 4 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.
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 24 botanical countries
| Region | TDWG code | Continent |
|---|---|---|
| Argentina Northeast | AGE | SOUTHERN AMERICA |
| Argentina Northwest | AGW | |
| Bolivia | BOL | |
| Brazil South | BZS | |
| Colombia | CLM | |
| Costa Rica | COS | |
| Ecuador | ECU | |
| Guatemala | GUA | |
| Honduras | HON | |
| Nicaragua | NIC | |
| Panamá | PAN | |
| Peru | PER | |
| Venezuela | VEN | |
| Arizona | ARI | NORTHERN AMERICA |
| California | CAL | |
| Mexico Central | MXC | |
| Mexico Gulf | MXG | |
| Mexico Northeast | MXE | |
| Mexico Northwest | MXN | |
| Mexico Southeast | MXT | |
| Mexico Southwest | MXS | |
| New Mexico | NWM | |
| Oklahoma | OKL | |
| Texas | TEX |
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.
Where it actually grows measured, from 44 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | 1.2 °C | 4.6 °C | 10.4 °C |
| Warmest month, mean daily high | 19.5 °C | 28.0 °C | 34.2 °C |
| Annual rainfall | 305 mm | 671 mm | 2,044 mm |
| Rainfall in the driest quarter | 5 mm | 28 mm | 185 mm |
It is found where winters are cool but frost is light or absent. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 44 research-grade observations of Cyperus melanostachyus that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.
This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.
Also published as 32 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.
- Chlorocyperus cimicinus (J.Presl & C.Presl) Rikli
- Chlorocyperus melanostachyus (Kunth) Rikli
- Cyperus adustus J.Presl & C.Presl
- Cyperus biradiatus Boeckeler
- Cyperus cimicinus J.Presl & C.Presl
- Cyperus diandrus var. capitatus Britton
- Cyperus flavescens subvar. capitatus (Britton) Farw.
- Cyperus intricatoramosus Boeckeler
- Cyperus longicruris Boeckeler
- Cyperus lorentzianus Boeckeler
- Cyperus lorentzianus var. compressus Kük.
- Cyperus lorentzianus var. elatus Kük.
- Cyperus melanostachyus var. caespitosus Boeckeler
- Cyperus melanostachyus var. capitatus (Britton) G.C.Tucker & Gandhi
- Cyperus melanostachyus var. gracilis Liebm.
- Cyperus melanostachyus var. lorentzianus (Boeckeler) G.C.Tucker & Gandhi
- Cyperus melanostachyus var. robustus Liebm.
- Cyperus niger Ruiz & Pav.
- Cyperus niger var. capitatus (Britton) O'Neill
- Cyperus niger var. castaneus Kük.
- Cyperus niger var. intricatoramosus (Boeckeler) Kük.
- Cyperus niger var. lorentzianus (Boeckeler) Kük.
- Cyperus niger var. pseudoelegantulus Kük.
- Cyperus niger var. robustus (Liebm.) Kük.
and 8 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.
- USDA PLANTS Database. common name, checklist symbol CYNI2. public domain. Retrieved 2026-07-13.
- 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.