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- Dichotomous Key
- Poaceae
- Poaceae Group 10
- Urochloa
- Urochloa texana
Urochloa texana — Texas liverseed grass
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Facts
Urocholoa texana is native to the southern United States and northern Mexico. It belongs to a genus a grasses that are distinguished from related genera on technical, micromorphological characteristics. For example, the upper lemma (one of the scales that conceals the flowers) is minutely marked with horizontal wrinkles, a feature that requires dissection and magnification to observe.
Habitat
Anthropogenic (man-made or disturbed habitats), meadows and fields
New England distribution
Adapted from BONAP data
Native: indigenous.
Non-native: introduced (intentionally or unintentionally); has become naturalized.
County documented: documented to exist in the county by evidence (herbarium specimen, photograph). Also covers those considered historical (not seen in 20 years).
State documented: documented to exist in the state, but not documented to a county within the state. Also covers those considered historical (not seen in 20 years).
Note: when native and non-native populations both exist in a county, only native status is shown on the map.
Found this plant? Take a photo and post a sighting.
Characteristics
- Habitat
- terrestrial
- New England state
- Massachusetts
- Leaf blade width
- 5–20 mm
- Inflorescence branches
- the flowers are attached to branches rather than to the main axis of the inflorescence
- Spikelet length
- 4.8–6 mm
- Glume relative length
- one or both glumes are as long or longer than all of the florets
- Awn on glume
- the glume has no awn
- One or more florets
-
- there is more than one floret per spikelet
- there is one floret per spikelet
- Lemma awn length
- 0 mm
- Leaf sheath hair type
- there are hairs on the surface of the leaf sheath, and some of the hairs have blisters at their bases
- Leaf ligule length
- 1–1.8 mm
- Anther length
- 1.6–2.7 mm
-
Flowers
- Anther length
- 1.6–2.7 mm
- Anther number
- 0–3
- Awn on glume
- the glume has no awn
- Bristles below spikelets
- no
- Floret lower bract texture
- the lemma is hard and firm
- Floret number
- 1–2
- Floret types within spikelet
-
- NA
- there are at least two distinct forms of florets within one spikelet
- Glume relative length
- one or both glumes are as long or longer than all of the florets
- Glume shape
- the glume is flat or curved in cross-section
- Glume veins
-
- 0
- 1
- 3
- 5
- 7 or more
- Inflorescence axis orientation
-
- the inflorescence axis is arched or curved outward
- the inflorescence axis is straight
- Inflorescence branches
- the flowers are attached to branches rather than to the main axis of the inflorescence
- Inflorescence length
- 10–30 mm
- Inflorescence type (general)
- the spikelets are borne on stalks or on branches
- Inflorescence type (specific)
- the inflorescence is branched and the branches all grow from the same side of the plant and look like spikes
- Lemma awn base
- NA
- Lemma awn coiled
- NA
- Lemma awn length
- 0 mm
- Lemma awn number
- the lemma has no awn
- Lemma awn orientation
- NA
- Lemma cross-section
- the lemma is flat or rounded if you cut across the midpoint
- Lemma surface
-
- the surface of the lemma has wrinkles that are oriented across the lemma
- the surface of the lemma is relatively smooth (not counting any longitudinal veins or hairs)
- Lemma tip
- the lemma tip is a simple point, with or without an awn (long narrow extension ending in a point)
- Lemma vein number
-
- 3
- 5
- 7 or more
- One or more florets
-
- there is more than one floret per spikelet
- there is one floret per spikelet
- Palea relative length
- palea is one half to fully as long as lemma
- Spikelet length
- 4.8–6 mm
- Spikelets spiny
- the spikelets do not appear spiny
-
Leaves
- Leaf auricles
- the leaves do not have auricles
- Leaf blade width
- 5–20 mm
- Leaf ligule length
- 1–1.8 mm
- Leaf ligule type
-
- the leaf ligule is in the form of a membrane with fine hairs
- the leaf ligule is in the form of fine hairs
- Leaf sheath closed around stem
- the margins of the leaf sheath are overlapping and not fused together except in the basal half (or less)
- Leaf sheath hair type
- there are hairs on the surface of the leaf sheath, and some of the hairs have blisters at their bases
- Leaf sheath hairs
- there are hairs on the surface of the leaf sheath
-
Place
- Habitat
- terrestrial
- New England state
- Massachusetts
- Specific habitat
-
- man-made or disturbed habitats
- meadows or fields
-
Stem, shoot, branch
- Stem spacing
- the stems grow close together in compact clusters or tufts
Wetland status
Not classified
In New England
Distribution
- Connecticut
- absent
- Maine
- absent
- Massachusetts
- present
- New Hampshire
- absent
- Rhode Island
- absent
- Vermont
- absent
Conservation status
Exact status definitions can vary from state to state. For details, please check with your state.
- Massachusetts
- not applicable (S-rank: SNA)
From Flora Novae Angliae dichotomous key
1. Urochloa texana (Buckley) R.D. Webster E
Texas liverseed grass. Brachiaria texana (Buckl.) S.T. Blake; Panicum texanum Buckley • MA. Fields, disturbed soil.
Native to North America?
Yes and no (some introduced)
Sometimes confused with
- Sacciolepis striata:
- upper lemma not transversely rugose and the panicle branches not second and without a triquetrous axis (vs. U. texana, with the upper lemma transversely rugose and panicle branches secund, with a triquetrous axis).
Synonyms
- Brachiaria texana (Buckl.) S.T. Blake
- Panicum texanum Buckley