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Class:angiosperms
Order:Santalales
Family:Santalaceae
Genus:Thesium
Scientific name: Thesium longifolium Turcz. ex Ledeb.
Name acc. to:Gubanov 1996
Herbar:list records    scans available    photo available    
Link to Flora of China:http://www.efloras.org/browse.aspx?flora_id=2&name_str=Thesium+longifolium
open map in a new windowtaxon distribution for Thesium longifolium acc. to Geobotanical Regions of Mongolia by Grubov (1955)
Habitat:Dry debris and soddy slopes, screes, fixed sands, shrubberies, dry forest fringes, river banks in forest and forest-steppe belts (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 genus Thesium: herb
perennial (i)Living for several to many years, as opposed to annual and biennial inherited by genus Thesium: perennial
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 Santalaceae: no parasite/saprophyte
Parasite/saprophyte (i)Plant not or not fully autonomous, leaves often without chlorophyll
example: Cuscuta, Corallorhiza, Epipogium (holomycotrophic)c
inherited by genus Thesium: Parasite/saprophyte
semi-parasite (i)Plant with chlorophyll in green leaves, but roots suck on other plants
example: Melampyrum, Odontites, Pedicularis
inherited by genus Thesium: semi-parasite
Water or terrestrial plant: (i)Where do the plants grow?terrestrial (i)Plant grows on dry land
example: Orostachys spinosa
inherited by genus Thesium: terrestrial
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 genus Thesium: 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
inherited by genus Thesium: alternate
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 Thesium: simple
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 Thesium: entire
Petiole: (i)Leaf divided into stalk (petiole) and blade.without (i)Leaves without petiole (stalk), sessile
example: Poaceae, Iris
inherited by genus Thesium: without
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 genus Thesium: none
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 Santalaceae: pinnate
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 Santalaceae: not attractive, wind-pollinated or some water plants
attractive, animal-pollinated (i)attractive and coloured flowers, mostly large, attracting surely animals
example: Trollius, Rosa, Chamaerhodos
inherited by genus Thesium: attractive, animal-pollinated
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 genus Thesium: simple, similar
Diameter of flower: (i)Diameter of flower or flower head. to 5 mm (i)
example: Aruncus
inherited by genus Thesium:
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 Santalaceae: radiary, regular (actinomorphic)
Flower form: (i)common forms of flowers ? Veronicatubular to funnel-shaped (i)Petals form a tube, are often partially united to a cylindrical corolla, often surrounded by a calyx inherited by genus Thesium: tubular to funnel-shaped
Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured).5 (i)
example: Potentilla
inherited by genus Thesium: 5
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
inherited by genus Thesium: fused
Spur: (i)A hollow, slender, sac-like appendage of the perianth leaves, storing nectar.no spur (i)Flower without appendage
example: Peganum
inherited by genus Thesium: no spur
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
inherited by genus Thesium: 5
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
inherited by genus Thesium: fused with a corolla (calyx in Thymelaeaceae)
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 genus Thesium: 1
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 genus Thesium: fused
Style number: (i)Portion of the pistil connecting the stigma to the ovary.1 inherited by family Santalaceae: 1
Stigma number per style: (i)Number of stigmas per style.1 (i)One stigma, sessile or with a developed style inherited by genus Thesium: 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).inferior (i)Ovary below the point where perianth leaves are inserted, always fused to an ovary
example: Vaccinum
inherited by family Santalaceae: inferior
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 genus Thesium: bisexual, hermaphrodite
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.
Type of fruit: (i)Common fruit types (including pseudocarp).Indehiscent fruits inherited by genus Thesium: Indehiscent fruits
Solitary fruits (i) inherited by genus Thesium: Solitary fruits
nut or nutlet (i)Dry fruit with a single, hard stone inside (and usually a large often edible embryo) inherited by genus Thesium: nut or nutlet
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 Santalales: allorhizous
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'
acc. to: Gubanov 1996
Distribution Khangay: (i)acc. Flora Khangaya 1989VI