Class: | angiosperms |
Order: | Brassicales |
Family: | Brassicaceae |
Genus: | Draba |
Scientific name: | Draba nemorosa L. |
Name acc. to: | Gubanov 1996 |
Herbar: | list records |
Link to Flora of China: | http://www.efloras.org/browse.aspx?flora_id=2&name_str=Draba+nemorosa |
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Habitat: | Meadows, meadow and steppe slopes, shrubberies, larch forests and their fringes, birch kolki, river banks (Grubov 2001). |
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 Brassicaceae: herb
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Special growth forms or habits: | rosette plant (i)All or nearly all leaves in a basal rosette, only inflorescences on erect stalks, these without or with much smaller leaves example: Primula farinosa
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Size of plant: (i)Attention: use flowering or fruiting specimens to assess plant height (many biennial plants possess only a basal rosette in the first year). | to 100 mm from 100 mm to 250 mm
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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 Brassicaceae: no parasite/saprophyte
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Water or terrestrial plant: (i)Where do the plants grow? | terrestrial (i)Plant grows on dry land example: Orostachys spinosa inherited by family Brassicaceae: terrestrial
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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 Brassicaceae: with green leaves
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Leaf arrangement: (i)Arrangement of leaves at the stem. | alternate (i)One leaf per node; distiche: arranged in two vertical rows, equitant example: Phragmites inherited by family Brassicaceae: alternate 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.) inherited by genus Draba: basal rosette
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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. | simple (i)Non-divided leaf, but margin may be incised nearly to the ground inherited by genus Draba: simple
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Shape of blade: (i)Easy for simple leaves. In compound leaves use the general shape of leaflet. Always check the ground for largest leaves of a plant. To be worked out: how to handle pinnate leaves? | elliptic (including ovate and obovate) (i)Elliptic: broadest at the middle and narrower at the two equal ends; ovate: egg-shaped, attached at the broad end; obovate: attached at the narrower end example: Limosella aquatica
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Leaf margin: (i)Structure of leaf margin (or that of a leaflet in case of compound leaves). Attention: Here we ask for the leaf margin, defined as all those dissections that separate the leaf for less than one third of its length or width, whatever is smaller. To be worked out: how to handle margin of pinnate leaves? | entire (i)Plain margin, not toothed example: Iris inherited by genus Draba: entire
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Petiole: (i)Leaf divided into stalk (petiole) and blade. | without (i)Leaves without petiole (stalk), sessile example: Poaceae, Iris inherited by genus Draba: without
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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 Brassicaceae: none
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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 Brassicaceae: pinnate
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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 Brassicaceae: attractive, animal-pollinated
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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. | white (i)Most plants of the population white example: Pleurospermum, Maianthemum
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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 inherited by family Brassicaceae: double, different
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Diameter of flower: (i)Diameter of flower or flower head. | to 5 mm (i) example: Aruncus inherited by genus Draba:
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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 inherited by family Brassicaceae: radiary, regular (actinomorphic) dicentric (i)Two axis of symmetry, take care of the arrangement of stamens example: Hypecoum, Brassicaceae: six stamens with two in the outer circle inherited by family Brassicaceae: dicentric
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Flower form: (i)common forms of flowers ? Veronica | simple (flat) - Do not confuse with inflorescences as in some Asteraceae (i)Petals spread out, flower appearing flat example: Mollugo, Trientalis, Pulsatilla, Saxifraga inherited by family Brassicaceae: simple (flat) - Do not confuse with inflorescences as in some Asteraceae
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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. | 4 (i) example: Sinapis inherited by family Brassicaceae: 4
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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 Brassicaceae: free
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Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured). | 4 (i) example: Galium inherited by family Brassicaceae: 4
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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 Brassicaceae: free
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Spur: (i)A hollow, slender, sac-like appendage of the perianth leaves, storing nectar. | no spur (i)Flower without appendage example: Peganum inherited by family Brassicaceae: no spur
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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). | 6 (i) example: Veratrum, Smelowskia, Juncus inherited by family Brassicaceae: 6
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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 Brassicaceae: free
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Pistil number: (i)Number of pistils (female floral organs: style, if developed; stigma and carpels/ovary together build the pistil). | 2 (i)Two stigmas, often cleaved like a snakes tongue example: Salvia, Arnica, Bupleurum, Bromus, Saxifraga, Veronica inherited by family Brassicaceae: 2
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Carpel number: (i)Number of carpels (carpel: forming a simple pistil or part of a compound pistil, modified leaf). | 2 inherited by family Brassicaceae: 2
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Carpel fusion: (i)To which degree are the carpels (modified leaf forming simple pistil or part of a compound pistil) fused. | fused (i)Carpels united into an ovary, only styles are free example: Malus, Berberis inherited by family Brassicaceae: fused
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Style number: (i)Portion of the pistil connecting the stigma to the ovary. | 1 inherited by family Brassicaceae: 1
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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 family Brassicaceae: superior (hypogynous)
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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 Brassicaceae: bisexual, hermaphrodite
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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 inherited by family Brassicaceae: Flowers in inflorescence Simple inflorescences (i)Flowers sessile on a main shoot or on short to long not branched side shoots example: Polygonum bistorta inherited by family Brassicaceae: Simple inflorescences
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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 inherited by family Brassicaceae: terminal
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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 inherited by family Brassicaceae: raceme
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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. | releasing seeds (i)Fruit dry but opening with fissures, slits, pores or valves to release seeds example: Thermopsis, Erysimum, Campanula, Scrophularia inherited by genus Draba: releasing seeds dry (i)With a dry outer shell, no fleshy parts, but seed (embryo) could be edible inherited by family Brassicaceae: dry inherited by genus Draba: dry
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Type of fruit: (i)Common fruit types (including pseudocarp). | Solitary fruits (i) inherited by family Brassicaceae: Solitary fruits Dehiscent fruits (i)Fruits open along a longitudinale line (except silicula) inherited by family Brassicaceae: Dehiscent fruits silique (i)Dry fruit, opening with two valves and a separating wall inbetween example: Brassicaceae, Hypecoum inherited by family Brassicaceae: silique
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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 genus Draba: opening along dehiscent line opening / dehiscent (i)Dry? Fruits opening with different types inherited by genus Draba: opening / dehiscent
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Size of fruit: (i)Size of the fruit including appendage. | from 5 mm to 10 mm (i) example: Silene: small capsule opening with teeth
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Dispersal: (i)Appearance of fruit or seed (if single) and adaptations to dispersal. | Otherwise (i)All parts dry, no conspicuous adaptations inherited by family Brassicaceae: Otherwise
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Hairs | |
Hairs: (i)Appearance, structure, coverage of hairs on plant. | on stem/shoot (i)Has hairs on stem/shoot structure: branched (i)With multiple branches (more than two), including stellate hairs example: Alyssum
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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 Brassicales: allorhizous
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Distribution (i)region where the plant is likely to be found | |
Distribution (Veg. Zones): (i)acc. to Grubov 1952 | Khubsgul (i)In distribution data often named as '1' Khentei (i)In distribution data often named as '2' Khangai (i)In distribution data often named as '3' Mongol-Daurian (i)In distribution data often named as '4' Great Khingan (i)In distribution data often named as '5' Khobdo (i)In distribution data often named as '6' Mongolian Altai (i)In distribution data often named as '7' Middle Khalkha (i)In distribution data often named as '8' East Mongolia (i)In distribution data often named as '9' Depression of Great Lakes (i)In distribution data often named as '10' Gobi-Altai (i)In distribution data often named as '13' acc. to: Gubanov 1996 |
Distribution Khangay: (i)acc. Flora Khangaya 1989 | I II III IV V VI
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Brassicaceae (i)special features within family | |
Fruit type: | silique long (i)Fruit 3 times longer than wide example: Sisymbrium
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