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 - Lavatera trimestris
 
Lavatera trimestris — rose-mallow
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Facts
Rose-mallow is native to the Mediterranean and western Asia, and widely grown as a garden plant. Numerous cultivars display a wide range of flower colors. It occasionally escapes cultivation in North America.
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.
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Characteristics
- Habitat
 - terrestrial
 
- New England state
 - Vermont
 
- Flower petal color
 - 
                                
                                    
- pink to red
 - white
 
 
- Leaf type
 - the leaves are simple (lobed or unlobed but not separated into leaflets)
 
- Leaf arrangement
 - alternate: there is one leaf per node along the stem
 
- Leaf blade edges
 - the edge of the leaf blade has lobes, or it has both teeth and lobes
 
- Flower symmetry
 - there are two or more ways to evenly divide the flower (the flower is radially symmetrical)
 
- Number of sepals, petals or tepals
 - there are five petals, sepals, or tepals in the flower
 
- 
                        
Clonal plantlets
- Bulbils
 - the plant does not appear to have bulbils
 
- Bulblets replace flowers
 - there are no bulblets where the flowers are located
 
 - 
                        
Flowers
- Anther spurs
 - the anthers do not have spurs on them
 
- Carpels fused
 - the carpels are fused to one another
 
- Cleistogamous flowers
 - there are no cleistogamous flowers on the plan
 
- Corolla palate
 - no
 
- Corona lobe length
 - 0 mm
 
- Epicalyx
 - the flower has an epicalyx
 
- Flower petal color
 - 
                                
                                    
- pink to red
 - white
 
 
- Flower symmetry
 - there are two or more ways to evenly divide the flower (the flower is radially symmetrical)
 
- Flowers sunken into stem
 - no
 
- Fused stamen clusters
 - there is one cluster of fused stamens
 
- Horns in hoods (Asclepias)
 - NA
 
- Hypanthium
 - the flower does not have a hypanthium
 
- Inner tepals (Rumex)
 - NA
 
- Nectar spur
 - the flower has no nectar spurs
 
- Number of sepals, petals or tepals
 - there are five petals, sepals, or tepals in the flower
 
- Ovary position
 - the ovary is above the point of petal and/or sepal attachment
 
- Petal and sepal arrangement
 - the flower includes two cycles of petal- or sepal-like structures
 
- Petal and sepal colors
 - 
                                
                                    
- pink to red
 - white
 
 
- Petal appearance
 - the petals are thin and delicate, and pigmented (colored other than green or brown)
 
- Petal folds or pleats
 - the petals of the flower do not have folds or plaits
 
- Petal hairs (Viola)
 - NA
 
- Petal tips (Cuscuta)
 - NA
 
- Scales inside corolla
 - no
 
- Sepal and petal color
 - the sepals are different from the petals
 
- Sepal appendages
 - the sepals do not have appendages on them
 
- Sepal appendages (Oenothera)
 - NA
 
- Sepal number
 - 5
 
- Staminodes
 - there are no staminodes on the flower
 
- Umbel flower reproductive parts
 - NA
 
- Upper lip of bilabiate corolla
 - NA
 
 - 
                        
Fruits or seeds
- Achene relative orientation
 - NA
 
- Achene shape
 - NA
 
- Achene surface (Polygonum)
 - NA
 
- Achene type
 - NA
 
- Berry color
 - NA
 
- Capsule color (Viola)
 - NA
 
- Capsule splitting
 - NA
 
- Fruit (pyxis) dehiscence
 - NA
 
- Fruit features (Brassicaceae)
 - NA
 
- Fruit locules
 - six or more
 
- Legumes (Fabaceae)
 - NA
 
- Mericarp length
 - anything
 
- Mericarp segment shape (Desmodium)
 - NA
 
- Other markings on berry
 - NA
 
- Ovary stipe
 - the ovary or fruit does not have a stipe
 
- Placenta arrangement
 - the plant has axile placentation, in which the ovules are attached where the septa of a compound ovary are united, usually on the central axis, or to the septa themselves
 
- Rows of seeds in fruit (Brassicaceae)
 - NA
 
- Schizocarpic fruit segments
 - 8–20
 
- Septum in fruit (Brassicaceae)
 - NA
 
- Wings on fruit
 - the fruit does not have wings on it
 
- prickles on fruits
 - the fruits do not have thorn-like defensive structures
 
 - 
                        
Glands or sap
- Glands on leaf blade
 - the leaf blades do not have glandular dots or scales
 
- Sap
 - the sap is clear and watery
 
- Sap color
 - the sap is clear
 
 - 
                        
Growth form
- Parasitism
 - the plant is not parasitic
 
- Plant color
 - the leaves or young stems of the plant are green
 
- Spines on plant
 - the plant has no spines
 
 - 
                        
Leaves
- Bracteole number (Apiaceae)
 - 0
 
- Bracts in plantain (Plantago)
 - NA
 
- Final leaf segment length (compound lvs only)
 - 0 mm
 
- Final leaf segment length to width ratio (compound lvs only)
 - anything
 
- Leaf arrangement
 - alternate: there is one leaf per node along the stem
 
- Leaf blade edges
 - the edge of the leaf blade has lobes, or it has both teeth and lobes
 
- Leaf blade surface colors
 - the upper side of the leaf blade is relatively uniform in color
 
- Leaf duration
 - the leaves drop off in winter (or they whither but persist on the plant)
 
- Leaf form
 - the leaves are green, with an expanded blade and a leaf-like texture
 
- Leaf spines
 - there are no spines on the leaf edges
 
- Leaf teeth and lobes
 - the leaf has lobes that radiate from the base, somewhat like a hand
 
- Leaf type
 - the leaves are simple (lobed or unlobed but not separated into leaflets)
 
- Leaves per node
 - there is one leaf per node along the stem
 
- Pinnately compound leaf type
 - NA
 
- Stipule features
 - NA
 
- Stipules
 - the plant has stipules
 
 - 
                        
Place
- Habitat
 - terrestrial
 
- New England state
 - Vermont
 
- Specific habitat
 - 
                                
                                    
- man-made or disturbed habitats
 - meadows or fields
 
 
 - 
                        
Scent
- Plant odor
 - the plant does not have much of a smell
 
 - 
                        
Stem, shoot, branch
- Branched tendrils
 - NA
 
- Leaves on stem
 - there is at least one full leaf above the base of the flowering stem
 
- Tendril origin
 - NA
 
- Tendrils
 - the plant does not have tendrils
 
 
Wetland status
Not classified
In New England
Distribution
- Connecticut
 - present
 
- Maine
 - absent
 
- Massachusetts
 - absent
 
- New Hampshire
 - absent
 
- Rhode Island
 - absent
 
- Vermont
 - present
 
Conservation status
None
From Flora Novae Angliae dichotomous key
1. Lavatera trimestris L. E
rose-mallow. Althaea trimestris Kuntze; Stegia trimestris (L.) T. Luque & Devesa • VT; also reported from CT by Magee and Ahles (1999), but specimens are unknown. Gardens, fields, roadsides.