BugwoodWiki Article

longspine sandbur
Cenchrus longispinus (Hack.) Fern

Overview

Appearance
Cenchrus longispinus is an annual grass with conspicuous burs along the seedhead. Sheaths may reach 20 in. (51 cm) in height. C. longispinus stems are somewhat flattened and hairless and has a fibrous root system. C. longispinus is native to North America, Mexico and South America.
Foliage
C. longispinus leaves may reach 8 in. (20.3 cm) in length and 0.24 in. (6 mm) in width. The upper surface is rough and there are no hairs on the lower surface. The ligule is a fringe of hairs and is about 0.04 in. (1 mm) long.
Flowers
The inflorescence of C. longispinus is a terminal, spikelike panicle of fascicles or burs. The fascicles have sharp bristles that surround and can conceal 1-4 spikelets. The spikelets are sessile, with 2 florets.
Fruit
Fruits are contained in the spiny burs held along the terminal panicle. Each bur is somewhat hairy and is approximately 0.2-0.3 in. (5-7 mm) wide.
Ecological Threat
Cenchrus species are typically found in sandy sites, abandoned fields, and recently disturbed areas. They invade recently disturbed areas and can tolerate a wide range of soil types and moisture conditions, allowing it to compete successfully with other species.

Selected Images


5362340
5362340

longspine sandbur
Cenchrus longispinus
Plant(s)
Howard F. Schwartz
5437168
5437168

longspine sandbur
Cenchrus longispinus
Plant(s)
Bruce Ackley
5437169
5437169

longspine sandbur
Cenchrus longispinus
Stem(s)
Bruce Ackley
5358671
5358671

longspine sandbur
Cenchrus longispinus
Feature(s)
L.L. Berry
5387213
5387213

longspine sandbur
Cenchrus longispinus
Stem(s)
Joseph M. DiTomaso
5362342
5362342

longspine sandbur
Cenchrus longispinus
Flower(s)
Howard F. Schwartz
5437175
5437175

longspine sandbur
Cenchrus longispinus
Feature(s)
Bruce Ackley
5387212
5387212

longspine sandbur
Cenchrus longispinus
Flower(s)
Joseph M. DiTomaso
5437167
5437167

longspine sandbur
Cenchrus longispinus
Feature(s)
Bruce Ackley
5364439
5364439

longspine sandbur
Cenchrus longispinus
Seed(s)
Howard F. Schwartz
5462012
5462012

longspine sandbur
Cenchrus longispinus
Spikelet(s)
D. Walters and C. Southwick
5462007
5462007

longspine sandbur
Cenchrus longispinus
Fruit(s)
D. Walters and C. Southwick

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Liliopsida
Subclass: Commelinidae
Order: Cyperales
Family: Poaceae
Genus: Cenchrus

Other System Links

Plants: CELO3
Bayer: CCHPA
GRIN: 103625
ITIS: 40570
NPDN Pest: PCAAWBC
NPDN Host: 36521

Synonyms and Other Names

Other Common Names:
mat sandbur, burgrass, field sandbur, innocent-weed, longspine sandbur, sandbur

Categories

Category: Grass or Grasslike