Class:angiosperms
Group:monocotyledons
Order:Poales
Family:Poaceae
Tribe:Poeae
Genus:Catabrosa
Scientific name: Catabrosa aquatica (L.) Beauv.
Name acc. to:Gubanov 1996
Synonym: Aira aquatica L. (acc. to Gubanov 1996)
Description:Plant 20-70 cm tall, stems rooting in nodes. Leaf sheaths closed up to middle, blades linear, flat, up to 7 mm wide, glabrous. Panicle loose, 10-20 cm long, 3-7 cm wide, with deflexed branchlets. Lemmas carinate, with 3 prominent veins, tridentate.
Tax. Comments:Catabrosa aquatica is a widespread, polymorphic species of aquatic and marshy habitats with decumbent submerged shoots.
Link to Flora of China:http://www.efloras.org/browse.aspx?flora_id=2&name_str=Catabrosa+aquatica
open map in a new windowtaxon distribution for Catabrosa aquatica acc. to Geobotanical Regions of Mongolia by Grubov (1955)
Habitat:Damp and swampy meadows, river and brook banks, near springs (Grubov 2001).

Character Data:

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Habit (i)general appearance of a plant
Parasite Status: (i)Is the plant autonoumously living, or a half- or full parasite?no parasite (i)plant fully autonomous
example: Ranunculus
inherited by family Poaceae: no parasite
Growth form: (i)Herb, shrub or tree / water plant = terrestrialperennial (i)living for several to many years, as opposed to annual and biennial
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
acc. to: FoC online
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 classificationdry (i)with a dry outer shell, no fleshy parts, but seed (embryo) could be edible inherited by family Poaceae: dry
Opening of Fruit:not opening (i)fruits remain closed at maturity and disperse with seeds inside
example: Corylus (nut), Vaccinium (berry)
inherited by family Poaceae: not opening
Dispersal: (i)Appearance of fruit or seed (if single) and adaptations to dispersalFlying (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
Type of Fruit: (i)common fruit types (including pseudocarp!?)caryopsis (i)a dry fruit, typical of grasses
example: Poaceae, wheat
inherited by family Poaceae: caryopsis
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
Flower (i)reproductive portion of the plant, consisting of sepals, petals, stamens, and pistils
Flower appearance and pollination: (i)general appearance of the flowernot 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
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 colourgreenish (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
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. simple, similar (i)only one type of perianth leaves (tepals)
example: Tulipa
inherited by family Poaceae: simple, similar
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:
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 Poaceae: radiary, regular (actinomorphic)
Sepal number: (i)Number of sepal leaves (outer perianth leaves, calyx leaves, mostly greenish). Attention, this character applies only for flowers separated in speals and petals, thus excluding most monocots. Be aware of the bracts (involucral leaves) of Asteraceae flowerheads, do not qualify these as sepals!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
Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured). none or rudementary (i)but green sepals may exist
example: Thalictrum
inherited by family Poaceae: none or rudementary
Spur: (i)a hollow, slender, sac-like appendage of the perianth leaves, storing nectarno spurs (i)
example: Peganum
inherited by family Poaceae: no spurs
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
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
Pistil number: (i)number of pistils (female floral organs: style, if developed; stigma; and carpels/ovary)1 (i)one carpel, but clearly one stigma
example: Pyrola, Primula, Alyssum
inherited by family Poaceae: 1
Carpel fusion: (i)to which degree are the carpels (modified leaf forming simple pistil or part of a compound pistil) fuseedfused (i)carpels united into an ovary, only styles are free
example: Malus, Berberis
inherited by family Poaceae: fused
Style number: (i)Portion of the pistil connecting the stigma to the ovarywithout (i)without style, stigma sessile on the carpel
example: Acorus calamus
inherited by family Poaceae: without
stigma number per style: (i)number of stigma per style2 (i)two stigmas, resulting from two fused carpels with or without develped style inherited by family Poaceae: 2
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)
Inflorescence (i)flowering part of a plant, describes the arrangement of the flowers on the flowering axis
Inflorescence: (i)Structure of the inflorescenceFlowers in inflorescence (i)no solitary flowers inherited by family Poaceae: Flowers in inflorescence
Appearance: (i)outer look of the inflorescenceterminal (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
Leaf (i)expanded, usually photosynthetic organ of a plant (including phylloclades)
Leaf development: (i)structure and development of leaveswith leaves (i)plant with green leaves inherited by family Poaceae: with leaves
Arrangement: (i)arrangement of leaves at the stemalternate (i)one leaf per node; distiche: arranged in two vertical rows, equitant
example: Phragmites
inherited by family Poaceae: alternate
Division: (i)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
Shape: (i)General shape of leaf or leaflet in compound leaves. Always check the ground for largest leaves of a plant. To be worked out: how to handle pinnate leaves?linear including grasslike leaves (i)leaves more than three times longer than broad; see character: stipule for ligula
example: Dracocephalum ruyischianum, Poaceae
inherited by family Poaceae: linear including grasslike leaves
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)smooth margin
example: Iris
inherited by order Poales: entire
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
Veination: (i)arrangment of the main veins of a leafparallel (i)most veins arranged parallel to the leaf, no pronounced main vein (usually in elongate to linear leaves)
example: Plantago, Veratrum
inherited by order Poales: parallel
Petiole: (i)length of the leaf stalk (petiole) in relation to the leafwithout (i)leaves without petiole (stalk), sessile
example: Poaceae, Iris
inherited by family Poaceae: without
Stipule: (i)leaflets at the base of the petiole, these are smaller and of different shapenone (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
Shoot/Stem (i)a young stem or branch
Spines, thorns or prickles: (i)shoot with conspicuous spines, thorns or pricklesabsent (i)stem glabrous or hairy, but never with spines, thornes or prickles
example: Gentiana barbata
inherited by family Poaceae: absent
Root / shoot below ground (i)plant part below ground (in most cases), including below ground shoots, without leaves
Root type: (i)Organisation of the rootshomorhizous (i)many equal roots
example: Monocotyledonae
inherited by class: 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)
Storage in below-ground structures: (i)Rhizom oder Zwiebelnone (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
Distribution (i)region where the plant is likely to be found
Distribution (Veg. Zones): (i)acc. to Grubov 1952Khentei (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'
Middle Khalkha (i)in distribution data often named as '8'
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 1989III
IV
V