| Class: | angiosperms |
| Order: | Poales |
| Family: | Poaceae |
| Genus: | Elymus |
| Scientific name: | Elymus mutabilis (Drob.) Tzvel. |
| Name acc. to: | Gubanov 1996 |
| Herbar: | list records |
| Link to Flora of China: | http://www.efloras.org/browse.aspx?flora_id=2&name_str=Elymus+mutabilis |
| open map in a new window |  |
| Habitat: | Forest meadows and clearings, larch forests, 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 Poaceae: herb
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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 Poaceae: no parasite/saprophyte
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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 Poaceae: 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 Poaceae: alternate
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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 order Poales: 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? | linear incl.grasslike or oblong (i)Leaves more than two times longer than broad with more or less parallel margins; see character: stipule for ligula
example: Dracocephalum ruyschiana, Poaceae, Scutellaria scordifolia, Pinus  inherited by family Poaceae: linear incl.grasslike or oblong
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| Leaf apex: (i)Appearance of the tip of leaf resp. leaflets in compound leaves. | acuminate (i)Gradually tapering to a (sharp) point
example: Populus laurifolia?  inherited by family Poaceae: acuminate
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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 order Poales: 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 family Poaceae: 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 Poaceae: none
ligula (i)Stipulae forming a transparent, often tongue-like sheath around the stem
example: Poa  inherited by family Poaceae: ligula
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| Leaf veination: (i)Arrangement of the main veins of a leaf. | parallel (i)Most veins arranged parallel to the length of leaf, mostly no pronounced main vein (usually in elongate to linear leaves)
example: Most Monocotyledonae, Plantago, Veratrum, a lot of Caryophyllaceae looks like that.  inherited by order Poales: parallel
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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. | not attractive, wind-pollinated or some water plants (i)Small, colourless or green flowers
example: Betula, grasslike plants: Carex, Setaria, Juncus inherited by family Poaceae: not attractive, wind-pollinated or some water plants
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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. | 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 inherited by family Poaceae: greenish
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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. | absent or strongly reduced (i)No perianth leaves ensheathing stamen and/or carpels
example: Callitriche  inherited by family Poaceae: absent or strongly reduced
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| Diameter of flower: (i)Diameter of flower or flower head. | to 5 mm (i)
example: Aruncus inherited by family Poaceae:
from 5 mm to 10 mm (i)
example: Stellaria inherited by family Poaceae:
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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. | none or rudimentary (i)Hardly visible or absent, since perianth uniform
example: All monocots with uniform perianth, many Asteraceae and Apiaceae inherited by family Poaceae: none or rudimentary
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| Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured). | none or reduced (i)But green sepals may exist
example: Thalictrum inherited by family Poaceae: none or reduced
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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 Poaceae: 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). | 3 (i)
example: Poa, Iris inherited by family Poaceae: 3
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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 Poaceae: 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). | 1 (i)One carpel, but clearly one stigma
example: Pyrola, Primula, Alyssum inherited by family Poaceae: 1
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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 Poaceae: fused
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| Style number: (i)Portion of the pistil connecting the stigma to the ovary. | without (i)Without style, stigma sessile on the carpel
example: Acorus calamus inherited by family Poaceae: without
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| Stigma number per style: (i)Number of stigmas per style. | 2 (i)Two stigmas, resulting from two fused carpels with or without developed style  inherited by family Poaceae: 2
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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 Poaceae: 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 Poaceae: 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 Poaceae: Flowers in inflorescence
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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 Poaceae: 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. | spike (spadix) (i)All flowers sessile and crowded along a main axis, there may be several spikes on a shoot; sometimes axis thickened (spadix)
example: Plantago, Carex vesicaria, Vicia, Typha (spadix)   inherited by family Poaceae: spike (spadix)
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 Poaceae: raceme
panicle (i)Branched, with flowers maturing from the bottom upwards
example: Phragmites  inherited by family Poaceae: panicle
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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. | dry (i)With a dry outer shell, no fleshy parts, but seed (embryo) could be edible inherited by family Poaceae: dry
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| Type of fruit: (i)Common fruit types (including pseudocarp). | Indehiscent fruits inherited by family Poaceae: Indehiscent fruits
caryopsis (i)A dry fruit, typical of grasses
example: Poaceae, wheat  inherited by family Poaceae: caryopsis
nut or nutlet (i)Dry fruit with a single, hard stone inside (and usually a large often edible embryo)  inherited by family Poaceae: nut or nutlet
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| Opening of fruit: (i)Mode of dehiscence at maturity to release seeds. | not opening / indehiscent (i)Fruits remain closed at maturity and disperse with seeds inside
example: Corylus (nut), Vaccinium (berry) inherited by family Poaceae: not opening / indehiscent
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| Dispersal: (i)Appearance of fruit or seed (if single) and adaptations to dispersal. | Flying (wind dispersed) (i)Fruits or seeds with appendages to fly
example: Taraxacum, Atraphaxis, Pulsatilla inherited by family Poaceae: Flying (wind dispersed)
Otherwise (i)All parts dry, no conspicuous adaptations inherited by family Poaceae: Otherwise
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| Seed number: (i)Estimate the number of seeds per fruit, if recognizable seeds are in the fruit (in rare cases a fruit may contain one seeded nuts: rose hip, carex). | 1 (i)A single seed (stone) or seed and fruit wall tightly connected
example: Prunus, Amygdalus: drupe inherited by family Poaceae: 1
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| Shoot/Stem (i)a young stem or branch | |
| Cross section: (i)Shape of the cross section of a stem or shoot (look at first to second year shoots). | round (i)Stem or shoot round
example: Allium inherited by family Poaceae: round
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| Spines, thorns or prickles: (i)Shoot with conspicuous spines, thorns or prickles. | absent (i)Stem glabrous or hairy, but never with spines, thornes or prickles
example: Gentiana barbata inherited by family Poaceae: absent
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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. | homorhizous (i)Many equal roots
example: Monocotyledonae inherited by order Poales: homorhizous
many equal roots (homorhizous or creeping rhizome) (i)Monocotyledons and dicotyledons with creeping rhizomes and roots of nearly equal diameter
example: Stipa inherited by family Poaceae: many equal roots (homorhizous or creeping rhizome)
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| 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 Poaceae: none
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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' 
acc. to: Gubanov 1996 |
| Distribution Khangay: (i)acc. Flora Khangaya 1989 | I
III
IV
V
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| Plant Use | |
| General Use: | forage plant (i)This plant is known as forage plant (Johnson 2003)
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