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Class:angiosperms
Order:Asterales
Family:Menyanthaceae
EditorS. Rilke, July 2009
Name acc. to:APGII
Herbar:list records    scans available    photo available    habitat photo available    
Description:Aquatic or paludal herbs, glabrous except corolla. Corolla lobes fimbriate, about as long as tube.
Tax. Comments:The family used to be included in Gentianaceae is placed on molecular evidence in Asterales.
open map in a new windowtaxon distribution for   acc. to Geobotanical Regions of Mongolia by Grubov (1955)
genus: 2
species: 2
Habit (i)general appearance of a plant
Parasite status: (i)Is the plant a half- or full parasite?no parasite/saprophyte (i)Plant fully autonomous, leaves with chlorophyll
example: Most plants, Ranunculus

Water or terrestrial plant: (i)Where do the plants grow?water or swamp plant
Leaf (i)expanded, usually photosynthetic organ of a plant (including phylloclades)
Leaf development: (i)Structure and development of leaves.flattened blade (i)Cross-section of lamina flat, plain
common leaf (i)Green, often divided in blade and petiole
example: Cotoneaster

with green leaves (i)Plant with green leaves
Leaf arrangement: (i)Arrangement of leaves at the stem.alternate (i)One leaf per node; distiche: arranged in two vertical rows, equitant
example: Phragmites

basal rosette (i)Leaves positioned at the base of the stem; stem often without leaves, no visible internodes (but flowers often on erect stems, and these may have few leaves)
example: Limonium, Potentilla, Plantago; also used in Liliales with basaly crouwded leaves (Tofieldia, Zigadenus etc.)

Petiole: (i)Leaf divided into stalk (petiole) and blade.with (i)Leaves with petiole (stalk)
Stipule: (i)Leaflets at the base of the petiole, these are smaller and of different shape.none (i)Without stipules
example: Euphorbia, Ericaceae s.l.

Leaf colour upper side: (i)Shades of green on the leaf, upper side.green (i)Clear green
example: Tribulus terrestris

Leaf colour lower side: (i)Shades of green on the leaf, lower side.green (i)Clear green, in most species
example: Angelica decurrens

Leaf veination: (i)Arrangement of the main veins of a leaf.pinnate (i)One main vein, several side veins, sometimes inconspicuous
example: Cicerbita

Flower (i)reproductive portion of the plant, consisting of sepals, petals, stamens, and pistils
Flower appearance and pollination: (i)General appearance of the flower.attractive, animal-pollinated (i)attractive and coloured flowers, mostly large, attracting surely animals
example: Trollius, Rosa, Chamaerhodos

Perianth arrangement: (i)Attention: in some plants, flowers may be dimorphic in different ways (dioecious or gynodioecious). If flowers vary, record the characters of the most showy flowers.double, different (i)Two types of perianth leaves, differently coloured (sepals: outer periant leaves, usually greenish, and petals: inner perianth leaves, usually coloured)
example: Parnassia

Flower symmetry: (i)Symmetry of the perianth leaves. Attention: to assess this character, look on sepals, petals and stamens, but neglect carpels and ovary.radiary, regular (actinomorphic) (i)More than two axis of symmetry
example: Saxifraga: 5; Iris: 3

Flower form: (i)common forms of flowers ? Veronicasimple (flat) - Do not confuse with inflorescences as in some Asteraceae (i)Petals spread out, flower appearing flat
example: Mollugo, Trientalis, Pulsatilla, Saxifraga

Sepal number: (i)Number of sepal leaves (outer perianth leaves, calyx leaves, mostly greenish). Attention, this character applies only for flowers separated in sepals and petals, thus excluding most monocots. Be aware of the bracts (involucral leaves) of Asteraceae flowerheads, do not qualify these as sepals! Be also aware in Rosaceae is often an epicalyx developed, in this case count all parts.5 (i)
example: Polemonium

Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured).5 (i)
example: Potentilla

Petal / Tepal fusion: (i)To which degree are the petal leaves connected? Petals sympetalous.fused (i)petal leaves united, only tips are free (gamopetalous, sympetalous)
example: Linnaea, Adenophora, Stellera

Spur: (i)A hollow, slender, sac-like appendage of the perianth leaves, storing nectar.no spur (i)Flower without appendage
example: Peganum

Stamen number: (i)Attention: We ask for the reproductive organs of the flower dispersing pollen. Count only fully fertile stamens, not staminodia (e.g. Parnassia).5 (i)
example: Peucedanum

Stamen fusion: (i)To which degree are the stamens fused? Attention: Whereas the pollen sacs itself are often free., their stalks (filaments) may be fused. Here, we count them as fused if they are together over at least one thirth of their length.fused with a corolla (calyx in Thymelaeaceae) (i)Stamens with perianth leaves at least one third of the length of the filament
example: Orobanche, Salvia, Stellera

Pistil number: (i)Number of pistils (female floral organs: style, if developed; stigma and carpels/ovary together build the pistil).1 (i)One carpel, but clearly one stigma
example: Pyrola, Primula, Alyssum

Carpel number: (i)Number of carpels (carpel: forming a simple pistil or part of a compound pistil, modified leaf).2
Style number: (i)Portion of the pistil connecting the stigma to the ovary.1
Ovary position: (i)For entirely or partly fused carpels, describe their position in relation to the insertion point of perianth leaves (best done by doing a longitudinal section of a flower).superior (hypogynous) (i)Base of carpels attached above insertion point of perianth leaves, carpels free or fused
example: Delphinium, Anemone

Sex: (i)Distribution of male and female organs among flowers, only most commonly cases.bisexual, hermaphrodite (i)All or nearly all flowers of a plant with male and female parts
example: Haplophyllum, Chenopodium

Inflorescence (i)flowering part of a plant, describes the arrangement of the flowers on the flowering axis
Appearance: (i)Outer look of the inflorescence.terminal (i)Inflorescence is the highest point of the plant and may consist of a single flower only
example: Cypripedium, Rhaponticum, Ligularia sibirica, Echinops

Fruit (i)the seed bearing organ, with or without adnate parts; a ripened ovary and any other structures which are attached and ripen with it. Aggregate fruits are handled like simple fruits for determination.
Consistency: (i)Fleshy fruits or dry fruits, see dispersal adaptations for further classification.dry (i)With a dry outer shell, no fleshy parts, but seed (embryo) could be edible
Type of fruit: (i)Common fruit types (including pseudocarp).Solitary fruits (i)
capsule (i)Dry dehiscent fruit, releasing seeds by slits or holes.
example: Poppy, most Caryophyllaceae, Cerastium, a lot of Scrophulariaceae, Iris (oppened capsule looks like Delphinium), Zygophyllum - it is a very common fruit type

Dehiscent fruits (i)Fruits open along a longitudinale line (except silicula)
Hairs
Has hairs?:no hairs, glabrous
Root / shoot below ground (i)plant part below ground (in most cases), including below ground shoots, without leaves
Root type: (i)Organisation of the roots.allorhizous (i)Plant with a conspicuous tap root, one larger tap root with side roots
example: Dicotyledonae
inherited by order Asterales: allorhizous