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.
 Distribution of Dichanthium annulatum var. annulatum in Hawaiʻi.

Inflorescence

Dichanthium annulatum var. annulatum Inflorescence
Dichanthium annulatum var. annulatum Inflorescence

Plant

Dichanthium annulatum var. annulatum Plant
Dichanthium annulatum var. annulatum Plant
Dichanthium annulatum var. annulatum Plant

Habit

Dichanthium annulatum var. annulatum Habit
Dichanthium annulatum var. annulatum Habit

Spikelets

Dichanthium annulatum var. annulatum Spikelets
Dichanthium annulatum var. annulatum Spikelets
Dichanthium annulatum var. annulatum Spikelets
Dichanthium annulatum var. annulatum Spikelets

Landscape

Dichanthium annulatum var. annulatum Landscape

Node

Dichanthium annulatum var. annulatum 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. )