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.

Inflorescence

Plant

Habit

Spikelets

Node

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. )

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