| Class: | angiosperms |
| Order: | Rosales |
| Family: | Rosaceae |
| Genus: | Dryadanthe |
| Scientific name: | Dryadanthe tetrandra (Bunge) Juz. |
| Name acc. to: | Gubanov 1996 |
| Herbar: | list records |
| Synonym: | Sibbaldia tetrandra Bunge |
| open map in a new window |  |
| Habitat: | Rock debris and stone fields, rocks, moraines in alpine belt (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 Dryadanthe: herb
perennial (i)Living for several to many years, as opposed to annual and biennial inherited by genus Dryadanthe: perennial
|
| 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
|
| 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
|
| 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 Dryadanthe: 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. | trifoliate (i)Three-parted leaf (often called ternate)
example: Trifolium, Thermopsis 
compound (i)Composed of several similar parts
|
| Length of leaves: (i)How long is the leaf, be carefull in compound leaves, measure the complete leaf. | from 6 mm to 10 mm
from 11 mm to 20 mm
|
| Leaf base: (i)The angle the leaf blade forms with a real or imaginary (sessile leaves) petiole. Attention: Here, we consider only the base of leaves or leaflets (in case of compound leaves). | cuneate (i)Tapering gradually, angle > 90° - 120°
example: Thalictrum, Betula fruticosa 
|
| 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 Dryadanthe: pair
|
| 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. | yellow to orange (i)Pale to golden yellow
example: Ranunculus, Crepis
|
| 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 Dryadanthe: double, different
|
| Diameter of flower: (i)Diameter of flower or flower head. | to 5 mm (i)
example: Aruncus
from 5 mm to 10 mm (i)
example: Stellaria
|
| 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 ? 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 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. | 8 (i)Calyx and epicalyx
example: Potentilla (Rosaceae)
|
| Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured). | 4 (i)
example: Galium
|
| 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 inherited by genus Dryadanthe: 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). | 4 (i)Extremely rare, may be absent
example: Plantago
|
| 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). | 4
5
> 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
|
| Sex: (i)Distribution of male and female organs among flowers, only most commonly cases. | unisexual (i)
example: Rhodiola
dioecious (i)Male and female flowers at different individuals
example: Antennaria
|
| 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 Dryadanthe: Solitary flowers
|
| 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
|
| 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
|
| Type of fruit: (i)Common fruit types (including pseudocarp). | Indehiscent fruits inherited by genus Dryadanthe: Indehiscent fruits
Solitary fruits (i)    inherited by genus Dryadanthe: Solitary fruits
achene (i)A small, dry, indehiscent fruit with a single seed
example: Asteraceae, Apiaceae (schizocarp), Dipsacaceae, Rosaceae, Ranunculaceae   inherited by genus Dryadanthe: achene
nut or nutlet (i)Dry fruit with a single, hard stone inside (and usually a large often edible embryo)  inherited by genus Dryadanthe: 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)
|
| Size of fruit: (i)Size of the fruit including appendage. | to 5 mm (i)
example: Halerpestes: many folicles forming dry nutlets
|
| Dispersal: (i)Appearance of fruit or seed (if single) and adaptations to dispersal. | Otherwise (i)All parts dry, no conspicuous adaptations inherited by genus Dryadanthe: Otherwise
|
| Hairs | |
| Has hairs?: | has hairs
|
| Hairs: (i)Appearance, structure, coverage of hairs on plant. | on leaf (i)Hairs on upper side, lower side or on margin of leaf
leaf upper side (i)Has hairs on leaves upper side (blade)
leaf lower side
|
| 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
|
| Runners: (i)Plant must be excavated; shoots, subterranean shoots connected by runners. | short rhizoms (tussocks) (i)Plants grow new shoots immediately beside the old ones, forming dense clusters, called tussocks
example: Stipa
|
| 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' 
Khangai (i)In distribution data often named as '3' 
Khobdo (i)In distribution data often named as '6' 
Mongolian Altai (i)In distribution data often named as '7' 
acc. to: Gubanov 1996 |
| Distribution Khangay: (i)acc. Flora Khangaya 1989 | III
|