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Class:angiosperms
Order:Rosales
Family:Rosaceae
Genus:Dryas
Scientific name: Dryas sumneviczii Serg.
Name acc. to:Gubanov 1996, not in Grubov 1982/2001
Comments:FloraGREIF accessible material of Mongolia (HAL, GFW) does not include this species.
open map in a new windowtaxon distribution for Dryas sumneviczii acc. to Geobotanical Regions of Mongolia by Grubov (1955)
Habitat:In forests and alpine belts (Flora of Siberia, Vol. 8, 2004).
Habit (i)general appearance of a plant
Growth form: (i)Herb, shrub, tree or climber.shrub, subshrub or semishrub (i)Shrub, multi-stemmed, mostly (0.2) 0.5 - 5 m high, shoots woody up to the tip
example: Caragana leucophloea
inherited by genus Dryas: shrub, subshrub or semishrub
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 inherited by genus Dryas:
from 100 mm to 250 mm inherited by genus Dryas:
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 Rosaceae: no parasite/saprophyte
Water or terrestrial plant: (i)Where do the plants grow?terrestrial (i)Plant grows on dry land
example: Orostachys spinosa
inherited by genus Dryas: 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 family Rosaceae: with green leaves
Leaf arrangement: (i)Arrangement of leaves at the stem.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 Dryas: basal rosette
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 Dryas: simple
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?lanceolate (i)Lance-shaped; much longer than wide, with the widest point in the middle or below inherited by genus Dryas: lanceolate
Length of leaves: (i)How long is the leaf, be carefull in compound leaves, measure the complete leaf. from 6 mm to 10 mm inherited by genus Dryas:
from 11 mm to 20 mm inherited by genus Dryas:
from 21 mm to 50 mm inherited by genus Dryas:
Leaf apex: (i)Appearance of the tip of leaf resp. leaflets in compound leaves.obtuse (i)Sides coming together at the apex at an angle greater than 90 degrees
example: Fallopia convolvulus
inherited by genus Dryas: obtuse
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?lobed (i)Curved division, be aware of deeply lobed leaves than compare with palmatisected (character: leaf division)
example: Crataegus, Dryas, Rubus humulifolius
inherited by genus Dryas: lobed
Petiole: (i)Leaf divided into stalk (petiole) and blade.with (i)Leaves with petiole (stalk) inherited by genus Dryas: with
shorter than blade (i)Petiol shorter than leaf blade inherited by genus Dryas: shorter than blade
Stipule: (i)Leaflets at the base of the petiole, these are smaller and of different shape.pair (i)A pair of free stipulae
example: Lathyrus, Trifolium
inherited by genus Dryas: pair
Leaf colour upper side: (i)Shades of green on the leaf, upper side.green (i)Clear green
example: Tribulus terrestris
inherited by genus Dryas: green
Leaf colour lower side: (i)Shades of green on the leaf, lower side.grayish (i)Grayish in colour due to hairs or a thick cuticula
example: Atriplex cana
inherited by genus Dryas: grayish
whitish (i)Nearly white or cream, often (due to dense pubescence)
example: Rubus canescens
inherited by genus Dryas: whitish
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 genus Dryas: 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.attractive, animal-pollinated (i)attractive and coloured flowers, mostly large, attracting surely animals
example: Trollius, Rosa, Chamaerhodos
inherited by family Rosaceae: 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.white (i)Most plants of the population white
example: Pleurospermum, Maianthemum
inherited by genus Dryas: white
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 genus Dryas: double, different
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 Rosaceae: radiary, regular (actinomorphic)
Flower form: (i)common forms of flowers ? Veronicasimple (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 Rosaceae: simple (flat) - Do not confuse with inflorescences as in some Asteraceae
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.>5 (i)
example: Malva, often with outer and inner calyx leaves
inherited by genus Dryas: >5
Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured).6 (i)
example: Allium, Lilium, Dactylorhiza
inherited by genus Dryas: 6
>6 (i)
example: Halerpestes, Trientalis
inherited by genus Dryas: >6
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 Rosaceae: free
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 Rosaceae: 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).> 10 (i)
example: Nymphaea, Callianthemum, Rosa
inherited by genus Dryas: > 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 Rosaceae: free
Carpel number: (i)Number of carpels (carpel: forming a simple pistil or part of a compound pistil, modified leaf).> 5 inherited by genus Dryas: > 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 genus Dryas: 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 genus Dryas: 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 genus Dryas: 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.Solitary flowers (i)Each flower grows on an own leafy stem there may be more than one, if the plant has many leafy shoots
example: Viola, Saxifraga hirculus, Rubus arcticus
inherited by genus Dryas: Solitary flowers
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 genus Dryas: dry
Type of fruit: (i)Common fruit types (including pseudocarp).Indehiscent fruits inherited by genus Dryas: Indehiscent fruits
achene (i)A small, dry, indehiscent fruit with a single seed
example: Asteraceae, Apiaceae (schizocarp), Dipsacaceae, Rosaceae, Ranunculaceae
inherited by genus Dryas: achene
nut or nutlet (i)Dry fruit with a single, hard stone inside (and usually a large often edible embryo) inherited by genus Dryas: nut or nutlet
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 genus Dryas: not opening / indehiscent
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 genus Dryas: Flying (wind dispersed)
with feathery elongation (i)Style grows into a feather-like appandage
example: Stipa, Dryas
inherited by genus Dryas: with feathery elongation
Otherwise (i)All parts dry, no conspicuous adaptations inherited by genus Dryas: Otherwise
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 genus Dryas: 1
Hairs
Has hairs?:no hairs, glabrous inherited by genus Dryas: no hairs, glabrous
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 Rosales: allorhizous
Distribution (i)region where the plant is likely to be found
Distribution (Veg. Zones): (i)acc. to Grubov 1952Khubsgul (i)In distribution data often named as '1'
acc. to: Gubanov 1996