| Class: | angiosperms |
| Order: | Malvales |
| Family: | Malvaceae |
| Genus: | Hibiscus |
| Scientific name: | Hibiscus trionum L. |
| Name acc. to: | Gubanov 1996 |
| Herbar: | list records   |
| Description: | Leaves divided up to base into 3 pinnatipartite lobes. Calyx with many purple nerves, accrescent, epicalyx of 10-13 linear leaflets; corolla pale yellow with purple spot on throat, 17-33 mm long. Capsule black, covered with long pale bristlelike hairs. |
| Comments: | Plants of weedy sites, distributed in eastern Mongolia only. |
| Link to Flora of China: | http://www.efloras.org/browse.aspx?flora_id=2&name_str=Hibiscus+trionum |
| open map in a new window |  |
| Habitat: | Debris and stony steppe and desert slopes, sandy-pebble shoals of rivers and lakes, ruderal places and in crops (Grubov 2001). |
| Habit (i)general appearance of a plant | |
| Growth form: (i)Herb, shrub, tree or climber. | annual (i)Completing its life cycle within one year or one growing season; roots weak and thin
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 Malvaceae: herb
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| 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). | from 250 mm to 600 mm
from 600 mm to 1000 mm
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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 Malvaceae: no parasite/saprophyte
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| Water or terrestrial plant: (i)Where do the plants grow? | terrestrial (i)Plant grows on dry land
example: Orostachys spinosa inherited by family Malvaceae: terrestrial
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| Leaf (i)expanded, usually photosynthetic organ of a plant (including phylloclades) | |
| Leaf development: (i)Structure and development of leaves. | flattened blade (i)Cross-section of lamina flat, plain inherited by family Malvaceae: flattened blade
common leaf (i)Green, often divided in blade and petiole
example: Cotoneaster inherited by family Malvaceae: common leaf
with green leaves (i)Plant with green leaves inherited by family Malvaceae: 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 Malvaceae: 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. | trifoliate (i)Three-parted leaf (often called ternate)
example: Trifolium, Thermopsis 
compound (i)Composed of several similar parts
palmate (transition to palmatisected!) (i)Divided from a point, like the fingers of a hand
example: Cannabis, Hibiscus (3-5 parts) 
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| Length of leaves: (i)How long is the leaf, be carefull in compound leaves, measure the complete leaf. | from 21 mm to 50 mm
more than 50 mm
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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? | lobed (i)Curved division, be aware of deeply lobed leaves than compare with palmatisected (character: leaf division)
example: Crataegus, Dryas, Rubus humulifolius 
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| Petiole: (i)Leaf divided into stalk (petiole) and blade. | with (i)Leaves with petiole (stalk)  inherited by family Malvaceae: with
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| 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 family Malvaceae: pair
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| 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 Malvaceae: pinnate
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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. | attractive, animal-pollinated (i)attractive and coloured flowers, mostly large, attracting surely animals
example: Trollius, Rosa, Chamaerhodos inherited by family Malvaceae: attractive, animal-pollinated
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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. | yellow to orange (i)Pale to golden yellow
example: Ranunculus, Crepis
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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. | 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 family Malvaceae: double, different
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| Diameter of flower: (i)Diameter of flower or flower head. | from 20 mm to 40 mm (i)
example: Aquilegia
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| 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 Malvaceae: radiary, regular (actinomorphic)
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| 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 Malvaceae: simple (flat) - Do not confuse with inflorescences as in some Asteraceae
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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. | 5 (i)
example: Polemonium inherited by family Malvaceae: 5
10 (i)Calyx and epicalyx
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| Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured). | 5 (i)
example: Potentilla inherited by family Malvaceae: 5
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| 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 Malvaceae: free
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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 Malvaceae: 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). | > 10 (i)
example: Nymphaea, Callianthemum, Rosa inherited by family Malvaceae: > 10
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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. | fused with each other (i)All or most stamens fused with each other to a tube-like structure
example: Caragana, Petasites inherited by family Malvaceae: fused with each other
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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 Malvaceae: 1
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| Carpel number: (i)Number of carpels (carpel: forming a simple pistil or part of a compound pistil, modified leaf). | 5 inherited by family Malvaceae: 5
> 5 inherited by family Malvaceae: > 5
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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 Malvaceae: fused
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| Style number: (i)Portion of the pistil connecting the stigma to the ovary. | 1 inherited by family Malvaceae: 1
5 inherited by family Malvaceae: 5
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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 Malvaceae: 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 Malvaceae: 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. | 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
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| Appearance: (i)Outer look of the inflorescence. | axillary (i)Usually several inflorescences in axillary shoots or single flowers in leaf axils, main shoot remains mostly leafy
example: Tragopogon, Aconogonon
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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 Malvaceae: dry
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| Type of fruit: (i)Common fruit types (including pseudocarp). | Solitary fruits (i)   
capsule (i)Dry dehiscent fruit, releasing seeds by slits or holes.
example: Poppy, most Caryophyllaceae, Cerastium, a lot of Scrophulariaceae, Iris (oppened capsule looks like Delphinium), Zygophyllum - it is a very common fruit type   
Dehiscent fruits (i)Fruits open along a longitudinale line (except silicula)
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| Opening of fruit: (i)Mode of dehiscence at maturity to release seeds. | opening / dehiscent (i)Dry? Fruits opening with different types
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| Size of fruit: (i)Size of the fruit including appendage. | from 5 mm to 10 mm (i)
example: Silene: small capsule opening with teeth
more than 10 mm (i)
example: Malus: wild apple
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| Hairs | |
| Has hairs?: | has hairs
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| Hairs: (i)Appearance, structure, coverage of hairs on plant. | on leaf (i)Hairs on upper side, lower side or on margin of leaf
leaf lower side
on stem/shoot (i)Has hairs on stem/shoot
structure: branched (i)With multiple branches (more than two), including stellate hairs
example: Alyssum
on flower/ inflorescence (i)Has hairs on flower (calyx and/or corolla) and/or inflorescence (axis, pedicels)
Hairs on fruits
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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. | allorhizous (i)Plant with a conspicuous tap root, one larger tap root with side roots
example: Dicotyledonae inherited by order Malvales: allorhizous
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| Distribution (i)region where the plant is likely to be found | |
| Distribution (Veg. Zones): (i)acc. to Grubov 1952 | Middle Khalkha (i)In distribution data often named as '8' 
East Mongolia (i)In distribution data often named as '9' 
East Gobi (i)In distribution data often named as '12' 
acc. to: Gubanov 1996 |