Eustachys

Contains 6 accepted taxa overall.

Characteristics
Eustachys Desv.
POACEAE
FINGERGRASS
View USF Herbarium specimens of this family
Classification
POALES
Eustachys
Citation
EUSTACHYS Desvaux, Nouv. Bull. Sci. Soc. Philom. Paris 2: 188. 1810.
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TYPE: Eustachys petraea (Swartz) Desvaux (Chloris petraea Swartz)
Distribution Map Present

This species have been reported in the counties highlighted.

Species
Scientific Name Common Name Herbarium Specimens Status Photos
Eustachys distichophylla WEEPING FINGERGRASS Not Native
Eustachys floridana TWOSPIKE FINGERGRASS Native
Eustachys glauca SALTMARSH FINGERGRASS Native FACW (NWPL) FACW (DEP)
Eustachys neglecta FOURSPIKE FINGERGRASS Native FACU (NWPL)
Eustachys petraea PINEWOODS FINGERGRASS Native FACU (NWPL) FAC (DEP)
Eustachys retusa ARGENTINE FINGERGRASS Not Native
Identification Key
1.  Spikelets 2.4-3.7 mm long
2
1.  Spikelets 1.5-2.5 mm long
4
2.  Inflorescence branches 1-3; spikelets 3-3.7 mm long; lower lemma awn 0.4-0.6 mm long
E. floridana
2.  Inflorescence branches (3)4-36; spikelets 2.4-3 mm long; lower lemma awn 0.7-1.2 mm long or only mucronate
3
3.  Inflorescence branches 10-36, lax and curvaceous; keel of lower lemma glabrous
E. distichophylla
3.  Inflorescence branches (3)4-9, stiff; keel of lower lemma pubescent
E. neglecta
4.  Culms 60-150 cm long; inflorescence branches 8-24; lower lemma veins and keel glabrous or with few hairs
E. glauca
4.  Culms 20-80(100) cm long; inflorescence branches (1)4-15; lower lemma veins or keels pubescent
5
5.  Inflorescence branches 8-15; keel of lower lemma glabrous, lateral veins with white hairs 1-2 mm long
E. retusa
5.  Inflorescence branches (1)4-11; keel and lateral veins of lower lemma densely pubescent, hairs to 1 mm long
6
6.  Lower lemma pale to reddish brown, lateral vein hairs spreading, white, and 0.5-1 mm long; upper sterile lemma 1.3-1.5 mm long
E. caribaea
6.  Lower lemma dark brown to nearly black, lateral veins hairs appressed, brown, and 0.1-0.4 mm long; upper sterile lemma 0.8-1(1.2) mm long
E. petraea
Genus Synonyms
Synonym Full Citation Basionym Type
Schultesia Schultesia Sprengel, Pl. Min. Cogn. Pug. 2: 17. 1815, nom. rej. vs. Schultesia Martius 1827. TYPE: Schultesia petraea (Swartz) Sprengel (Chloris petraea Swartz) = Eustachys Desvaux 1810.