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- Festuca prolifera
Festuca prolifera — proliferous fescue
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Facts
Proliferous fescue is a rare alpine species found only in Maine and New Hampshire, where it forms mats on cliffs, seeps and in ravines. Its spikelets can produce vegetative plantlets directly on the mother plant, and the species uses this unusual form of reproduction more commonly than producing seeds.
Habitat
Alpine or subalpine zones, cliffs, balds, or ledges, talus and rocky slopes
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.
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Characteristics
- Habitat
-
- terrestrial
- wetlands
- New England state
-
- Maine
- New Hampshire
- Leaf blade width
- 0.3–1 mm
- Inflorescence branches
- the flowers are attached to branches rather than to the main axis of the inflorescence
- Glume relative length
- neither glume is quite as long as all of the florets
- Awn on glume
- the glume has no awn
- One or more florets
- there is more than one floret per spikelet
- Lemma awn length
- 0 mm
- Leaf sheath hair type
- there are hairs on the surface of the leaf sheath, but the hairs do not have blisters at their bases
- Leaf ligule length
- 0.1–0.6 mm
- Anther length
- At least 0 mm
-
Flowers
- Anther length
- At least 0 mm
- Anther number
- 0–3
- Awn on glume
- the glume has no awn
- Bristles below spikelets
- no
- Floret lower bract texture
- the lemma is thin and flexible
- Floret types within spikelet
- all the florets within a spikelet are similar
- Glume awn length
- 0 mm
- Glume relative length
- neither glume is quite as long as all of the florets
- Glume shape
- the glume is V-shaped in cross-section
- Glume veins
-
- 1
- 3
- Glumes per spikelet
- 2
- Inflorescence arrangement
- the spikelets are uniform
- 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 branches coming off the lowest stem node
- 1–2
- Inflorescence crowding
-
- the panicle is somewhat to very congested (crowded), and the branches may not be clearly seen without close inspection
- the panicle is somewhat to very spread out, with clearly-evident branches
- Inflorescence length
- 30–120 mm
- Inflorescence type (general)
- the spikelets are borne on stalks or on branches
- Inflorescence type (specific)
- the inflorescence is branched, and the branches do NOT both grow from the same side of the plant AND look like spikes
- Inforescence position
- the spikelets are mainly carried at the end of the stem
- 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 base hair length
- 0 mm
- Lemma base hairs
- the lemma is hairless or feels just a tiny bit rough at the base
- Lemma surface
- 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 tip shape
-
- the lemma tip tapers to a long narrow point (it may or may not also have an awn or teeth at the tip)
- the lemma tip tapers to a narrow point (it may or may not also have an awn or teeth at the tip)
- Lemma vein number
-
- 1
- 5
- Lemma vein orientation
- the veins on the lemma stay roughly parallel throughout
- Lower glume length
- 2.5–5.5 mm
- Lower glume relative length
-
- the lower glume is nearly as long, or as long as, the upper glume
- the lower glume is one third to three quarters as long as the upper glume
- One or more florets
- there is more than one floret per spikelet
- Palea length
- At least 0 mm
- Palea relative length
-
- palea is less than one half as long as lemma or absent
- palea is one half to fully as long as lemma
- Reproductive system
- all the flowers on the plant have both carpels and stamens (synoecious)
- Spikelet axis tip
- there is no extension of the spikelet axis beyond the tip of the spikelet
- Spikelet number per node
- Up to 0
- Spikelet pedicel
- the spikelets have pedicels
- Spikelet shape
- the spikelets are lanceolate (lance-shaped, widest below the middle and tapering narrowly to the ends) in profile
- Spikelets per panicle branch
- 0–3
- Spikelets spiny
- the spikelets do not appear spiny
- Tip of glume
- the tip of the glume is not divided (though it may have an awn on it)
- Upper glume length
- 3.5–6.5 mm
- Upper glume relative length
- the upper glume is more than one half as long as the lowest lemma
- Upper glume shape
- the upper glume is widest at or below the middle
-
Fruits or seeds
- Groove on seed
- the caryopsis has a groove running most of its length
-
Growth form
- Horizontal rooting stem
- yes
- Lifespan
- the plant lives more than two years
-
Leaves
- Basal leaves
- the plant has large or prominent tufts of leaves at the base of the flowering stem
- Leaf auricles
- the leaves do not have auricles
- Leaf basal lobe hairy
-
- NA
- the lobes at the base of the leaf blades are hairless
- Leaf blade base
- the leaf is tapered gradually to the base
- Leaf blade cross-section
- the leaf blade is clearly folded or rolled inwards
- Leaf blade hairs
-
- the leaf blade is hairless, but it may have tiny prickles that give it a sand-papery feel
- the leaf blade is hairy
- Leaf blade texture
-
- the leaf blade is rough and sandpapery
- the leaf blade is smooth, or it may have soft hairs
- Leaf blade width
- 0.3–1 mm
- Leaf ligule length
- 0.1–0.6 mm
- Leaf ligule type
- the leaf ligule is in the form of a membrane with fine hairs
- Leaf margin glands
- there are no glands along the edges of the leaf blade
- Leaf sheath closed around stem
- the margins of the leaf sheath are fused together and form a closed tube except (possibly) at the very top
- Leaf sheath color and persistence
- the leaf sheathes are reddish-brown and disintegrate or become shredded in older leaves
- Leaf sheath hair type
- there are hairs on the surface of the leaf sheath, but the hairs do not have blisters at their bases
- Leaf sheath hairs
- there are hairs on the surface of the leaf sheath
- Orientation of topmost leaf
- the flag leaf is held upright, or at less than a 45 degree angle out from the stem
-
Place
- Habitat
-
- terrestrial
- wetlands
- New England state
-
- Maine
- New Hampshire
- Specific habitat
-
- alpine or subalpine zones
- cliffs, balds, or ledges
- talus or rocky slopes
-
Stem, shoot, branch
- Plant height
- 10–41 cm
- Roots at lower stem nodes
-
- no
- yes
- Stem hairs
-
- the stem has hairs on it
- the stem is nearly to completely hairless
- Stem orientation
- the stems are upright
- Stem spacing
-
- the stems grow close together in compact clusters or tufts
- the stems grow singly or a few together (they may form diffuse colonies)
Wetland status
Not classified
In New England
Distribution
- Connecticut
- absent
- Maine
- present
- Massachusetts
- absent
- New Hampshire
- present
- Rhode Island
- absent
- Vermont
- absent
Conservation status
Exact status definitions can vary from state to state. For details, please check with your state.
- Maine
- extremely rare (S-rank: S1), endangered (code: E)
- New Hampshire
- extremely rare (S-rank: S1), endangered (code: E)
From Flora Novae Angliae dichotomous key
4. Festuca prolifera (Piper) Fern. NC
proliferous fescue. Festuca rubra L. var. prolifera (Piper) Piper • ME, NH. Alpine cliffs, seeps, and ravines.
Native to North America?
Yes
Sometimes confused with
- Agrostis mertensii:
- leaves with blades 0.5-3 mm wide and ligules 0.7-3.3 mm long, and lowest lemma of spikelet awned (vs. F. prolifera, with leaves with blades mostly 0.3-0.8 mm wide and ligules mostly 0.1-0.4 mm long, and lowest lemma of spikelet unawned).
- Poa bulbosa:
- leaves with blades 1-2.5 mm wide and ligules 1-3 mm long, and anthers functional, 1.2-1.5 mm long (vs. F. prolifera, with leaves with blades mostly 0.3-0.8 mm wide and ligules mostly 0.1-0.4 mm long, and anthers usually non-functional, mostly 1.5-2.3 mm long when present).
Synonyms
- Festuca rubra L. var. prolifera (Piper) Piper