Dichanthium annulatum (Forssk.) Stapf var. papillosum (Hochst. ex A.Rich.) de Wet & Harlan

synonyms: Andropogon annulatus var. papillosus, Dichanthium papillosum


papillose bluestem


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; papillosum = "pimple" [Latin] refering to the raised bumps on the glumes
Photosynthetic type: C4 (warm season)
Nativity: naturalized - intentional
First recorded in Hawaiʻi: 1927

Map

 Distribution of Dichanthium annulatum var. papillosum in Hawaiʻi.
 Distribution of Dichanthium annulatum var. papillosum in Hawaiʻi.

Inflorescence

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

Plant

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

Habit

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

Spikelets

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

Node

Dichanthium annulatum var. papillosum Node

Collar

Dichanthium annulatum var. papillosum Collar

Description

Lower glume of sessile spikelet pilose to villous, with a distinct subapical fringe of bulbous-based hairs.
(Description source: Clayton, W.D. & Renvoize, S.A. 1982. Flora of Tropical East Africa. Gramineae (Part 3). A.A. Balkema, Rotterdam. 448 pp. )

Inferior glume of sessile spikelet pilose to villous, with a distinct subapical fringe of bulbous-based hairs.
(Description source: Cope, T.A. (ed.). 2002. Flora Zambesiaca. Volume 10. Part 4. Kew, London. 190 pp. )