Sporobolus, Brown, 1810

Longhi-Wagner, Hilda M., Alves, Ruy J. V., Da Silva, Nílber G. & Guimarães, Alessandra R., 2013, A new species of Sporobolus (Poaceae, Chloridoideae) from Trindade Island, Brazil, with comments on the distribution of the genus in the South Atlantic, Phytotaxa 144 (1), pp. 13-21 : 18

publication ID

https://doi.org/ 10.11646/phytotaxa.144.1.2

DOI

https://doi.org/10.5281/zenodo.5100209

persistent identifier

https://treatment.plazi.org/id/03AF8798-5D07-FFE8-638F-FE73FA05FB94

treatment provided by

Felipe

scientific name

Sporobolus
status

 

Key to the species of Sporobolus View in CoL from Ascension and Trindade Islands

1. Both glumes shorter than the anthecium. Continental Africa and weedy on Ascension............................. S. africanus View in CoL

- Lower glume shorter than the anthecium, the upper subequal to longer than the anthecium ...................................... 2

2. Plants 70–90 cm tall, with short rhizomes, forming dense tussocks. Panicle open to lax, 5.5–17 cm long. Leaf blades 30–60 cm × 1.2–1.5 mm, the sheaths 3–5 mm wide, conspicuously wider than the leaf-blades. Spikelets 3–3.5 mm long. Trindade Island ............................................................................................................................... S. nesiotioides View in CoL

- Plants 6–45(–65) cm tall, with short or long rhizomes. Panicle contracted, 1–11 cm long. Leaf blades (1.3–)2.3–20(– 28) cm × (1.5–)2–3(–5) mm, continuous with the leaf sheaths. Spikelets 2–3(–3.5) mm long ................................... 3

3. Plants up to 65 cm tall, with long and slender rhizomes, not forming tussocks. Pantropical, mostly on sandy coastal strands (up to 600 m elevation on volcanic tuff on Trindade Island) ......................................................... S. virginicus View in CoL

- Plants 6–45 cm tall, with short rhizomes, forming lax tussocks. Ascension Island.................................................... 4.

4. Plants 6–10 cm tall. Panicle 1–2 cm long, largely hidden in the leaves. Spikelets ca. 2 mm long. Ascension Island, endemic, endangered ................................................................................................................................. S. caespitosus View in CoL

- Plants 30–45 cm tall. Panicle 5–9 cm long, exserted. Spikelets 3–3.5 mm long. Ascension Island, endemic, considered extinct ......................................................................................................................................................... S. durus View in CoL

Kingdom

Plantae

Phylum

Tracheophyta

Class

Liliopsida

Order

Poales

Family

Poaceae

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF