Poaceae
Digitaria

Digitaria pubiflora (Vasey) Wipff

First published in Sida 19: 923 (2001)
This species is accepted
The native range of this species is Colorado to N. & N. Central Mexico. It is a perennial and grows primarily in the temperate biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Morphology General Habit
Perennial; caespitose; clumped densely. Rhizomes absent, or elongated. Culms erect; 20-70 cm long. Culm-nodes glabrous, or pubescent. Leaves cauline. Leaf-sheaths glabrous on surface, or pubescent; with simple hairs, or tubercle-based hairs. Ligule an eciliate membrane; 0.5-2 mm long; entire, or lacerate. Leaf-blades 1.3-7.7 cm long; 1.5-4.7 mm wide. Leaf-blade surface glabrous, or pubescent; sparsely hairy, or moderately hairy, or densely hairy.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; terminal and axillary; deciduous as a whole. Panicle open; ovate; effuse; 4.5-20 cm long; 5.5-31 cm wide. Primary panicle branches spreading; 3.6-17.7 cm long. Panicle branches capillary; straight. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.3-3.3 mm long; 0.6-1 mm wide; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.3-3.3 mm long; 0.6-1 mm wide; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.1-0.4 mm long; 0.05-0.1 length of spikelet; hyaline. Upper glume elliptic; 1.8-2.9 mm long; 1 length of spikelet; membranous; 3 -veined. Upper glume surface glabrous to villous; hairy between veins. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 1.8-2.9 mm long; 1 length of spikelet; membranous; 5 -veined; with equidistant veins; pubescent to villous; hairy between veins; acute. Fertile lemma elliptic; 1.9-2.6 mm long; cartilaginous; much thinner on margins; dark brown; without keel. Lemma margins flat; covering most of palea. Lemma apex obtuse. Palea cartilaginous.
Morphology Reproductive morphology Flowers
Anthers 0.3-0.5 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; 1.3-1.6 mm long.
Distribution
North America: north-central USA, southwest USA, and south-central USA.
Reference
Paniceae. Fl N Amer 2007.
[GB]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora.
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0