Dichanthium annulatum (Forssk.) Stapf var. annulatum

synonyms: Andropogon annulatus var. annulatus

Angleton grass, airport grass

Info

Subfamily: Panicoideae
Genus etymology: Dichanthium = "paired flower" [Greek] refering to the difference between the basal homogamous and the other heterogamous spikelets
Species etymology: annulatum = "ringed" [Latin] refering to the bearded nodes
Photosynthetic type: C₄ (warm season)
Nativity: naturalized - accidental
First recorded in Hawaiʻi: 1950

Map

Distribution of Dichanthium annulatum var. annulatum in Hawaiʻi.

Inflorescence

Plant

Habit

Spikelets

Landscape

Node

Description

Lower glume of sessile spikelet pubescent to pilose below the middle, the bulbous-based hairs mainly confined to the margin above.
(Description source: Clayton, W.D. & Renvoize, S.A. 1982. Flora of Tropical East Africa. Gramineae (Part 3). A.A. Balkema, Rotterdam. 448 pp. )

Diploid or tetraploid (2n = 20, 40).
(Description source: Cope, T.A, (1995) Flora Somalia, Vol 4. Royal Botanical Gardens, Kew, London. 312 pp. )

inferior glume of sessile spikelet pubescent to pilose below the middle, the bulbous-based hairs mainly confined to the margins above.
(Description source: Cope, T.A. (ed.). 2002. Flora Zambesiaca. Volume 10. Part 4. Kew, London. 190 pp. )

All photos are by Kevin Faccenda unless otherwise noted and are licensed under a Creative Commons CC BY license. All images by others are licensed under CC BY NC license or are used with permission