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Class:angiosperms
Order:Ranunculales
Family:Ranunculaceae
Genus:Thalictrum
Herbar:list records    scans available    photo available    habitat photo available    
Description:Leaves alternate, compound, 2-4 times pinnatisected into small lobes. Flowers small, regular mostly yellow-green, stamens exceeding perianth. Fruits consists of 3-15 costate achenes.
Comments:Plants wind pollinated, atractive by stamens.
open map in a new windowtaxon distribution for Thalictrum  acc. to Geobotanical Regions of Mongolia by Grubov (1955)
species: 9
Habit (i)general appearance of a plant
Growth form: (i)Herb, shrub, tree or climber.herb (i)Herbaceous, erect plant, up to 2m high, mostly with a leafy shoot; if perennial, shoots die to the ground each season, shoots are not woody
example: Artemisia pectinata
inherited by family Ranunculaceae: herb
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
inherited by family Ranunculaceae: no parasite/saprophyte
Water or terrestrial plant: (i)Where do the plants grow?terrestrial (i)Plant grows on dry land
example: Orostachys spinosa

Leaf (i)expanded, usually photosynthetic organ of a plant (including phylloclades)
Leaf development: (i)Structure and development of leaves.with green leaves (i)Plant with green leaves inherited by family Ranunculaceae: 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

Simple or divided leaves: (i)Are the leaves simple or completely divided in several parts? Blade of the leaf entire or (more or less) deeply dissected. Attention: There are various appearances of the leaf margin (from entire to toothed and lobed). Here, we ignore this and ask only for dissections that separate the leaf for more than one third of its length or width, whatever is smaller. Sometimes, it is difficult to tell apart compound leaves from a shoot system with simple leaves: look for stipulae and/or axillary buds at the ground of the leaves: if only some possess these structures, the others are most likely leaflets of a compound leaf.compound (i)Composed of several similar parts
complex divided (i)Divided into leaflets of more than second order
example: Artemisia gemelinii, Pulsatilla bungeana

Leaf base: (i)The angle the leaf blade forms with a real or imaginary (sessile leaves) petiole. Attention: Here, we consider only the base of leaves or leaflets (in case of compound leaves).cuneate (i)Tapering gradually, angle > 90° - 120°
example: Thalictrum, Betula fruticosa

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.
inherited by family Ranunculaceae: none
pair (i)A pair of free stipulae
example: Lathyrus, Trifolium

Leaf veination: (i)Arrangement of the main veins of a leaf.pinnate (i)One main vein, several side veins, sometimes inconspicuous
example: Cicerbita
inherited by family Ranunculaceae: pinnate
palmate (i)Several nearly equal main veins united at the point where the petiole inserts
example: Malva
inherited by family Ranunculaceae: palmate
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
inherited by family Ranunculaceae: attractive, animal-pollinated
Flower colour: (i)Attention: assess colour of the most colourful parts of the flower, but not of the stamens; be aware of single plants with a mutation (mostly white) on flower colour.greenish (i)petals absent or not distinctly different from colours of leaves, only stigmas (white) or anthers (yellow) may differ in color
example: Chenopodium, Triglochin

yellow to orange (i)Pale to golden yellow
example: Ranunculus, Crepis

Diameter of flower: (i)Diameter of flower or flower head. to 5 mm (i)
example: Aruncus

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

Sepal fusion: (i)To which degree are the sepal leaves connected? 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!free (i)All leaves separate from each other
example: Geranium
inherited by family Ranunculaceae: free
Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured).none or reduced (i)But green sepals may exist
example: Thalictrum

Petal / Tepal fusion: (i)To which degree are the petal leaves connected? Petals sympetalous.free (i)all petal leaves separate from each other
example: Anthriscus
inherited by family Ranunculaceae: free
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).> 10 (i)
example: Nymphaea, Callianthemum, Rosa
inherited by family Ranunculaceae: > 10
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.free (i)Stamens with separate bases
example: Malus
inherited by family Ranunculaceae: free
Carpel number: (i)Number of carpels (carpel: forming a simple pistil or part of a compound pistil, modified leaf).> 5 inherited by family Ranunculaceae: > 5
Carpel fusion: (i)To which degree are the carpels (modified leaf forming simple pistil or part of a compound pistil) fused.free (i)Carpels entirely free
example: Geum, Aconitum
inherited by family Ranunculaceae: free
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
inherited by order Ranunculales: superior (hypogynous)
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
inherited by family Ranunculaceae: bisexual, hermaphrodite
Inflorescence (i)flowering part of a plant, describes the arrangement of the flowers on the flowering axis
Inflorescence: (i)Structure of the inflorescence.Flowers in inflorescence (i)No solitary flowers
Compound inflorescences (i)Flowers on shoots of higher orders (complex branched)
example: Solidago

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

Inflorescence type: (i)Types of inflorescence. Attention: We here ask for the botanical nomenclature of inflorescences, which is sufficiently complicated. Tick only, if you are certain, or tick all inflorescence types that appear similar of these of the plant in question.raceme (i)Stalked flowers arranged along a simple main axis, often one by one in the axils of leaves, maturing from bottom upwards
example: Aconitum barbatum

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 inherited by family Ranunculaceae: dry
Type of fruit: (i)Common fruit types (including pseudocarp).Indehiscent fruits
Solitary fruits (i)
achene (i)A small, dry, indehiscent fruit with a single seed
example: Asteraceae, Apiaceae (schizocarp), Dipsacaceae, Rosaceae, Ranunculaceae

follicle (i)A pod arising from a single carpel, opening along a single side (the inner suture to which the seeds are attached)
nut or nutlet (i)Dry fruit with a single, hard stone inside (and usually a large often edible embryo)
Dehiscent fruits (i)Fruits open along a longitudinale line (except silicula)
Opening of fruit: (i)Mode of dehiscence at maturity to release seeds.opening along dehiscent line (i)Opening along a preformed line
example: Vicia, Lathyrus: pods
inherited by family Ranunculaceae: opening along dehiscent line
opening / dehiscent (i)Dry? Fruits opening with different types inherited by family Ranunculaceae: opening / dehiscent
Hairs
Has hairs?:has hairs
Hairs: (i)Appearance, structure, coverage of hairs on plant.on leaf (i)Hairs on upper side, lower side or on margin of leaf
structure: glands (i)Glands (plant appears sticky)
example: Thalictrum foetidum

leaf lower side
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 Ranunculales: allorhizous
Runners: (i)Plant must be excavated; shoots, subterranean shoots connected by runners.none (i)No runners or stolos visible
example: Dactylorhiza
inherited by family Ranunculaceae: none
long root suckers or rhizomes (i)Plants grow new shoots from roots or subterranean shoots, called rhizomes, these spacing stems apart
example: Hippophae, Artemisia sericea
inherited by family Ranunculaceae: long root suckers or rhizomes
stolons (i)Plants creep with above-ground shoots (stolons) which can root and establish new plants
example: Potentilla arenaria, P. anserina
inherited by family Ranunculaceae: stolons
Storage in below-ground structures: (i)Rhizomes or bulbs.none (i)Plant with non-thickened roots, their maximum diameter does not exceed the diameter of the shoot base
example: Anabasis brevifolia
inherited by family Ranunculaceae: none
storage rhizomes (i)Horizontal, root like structures with scale leaves or their scars, these clearly thicker than the bases of above-ground shoots
example: Petasites, Iris
inherited by family Ranunculaceae: storage rhizomes