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Class:angiosperms
Order:Rosales
Family:Cannabaceae
Genus:Cannabis
Herbar:list records    scans available    photo available    
Description:Annual dioecious herb. Female flowers without perianth in spicate inflorescence, male flowers with simple perianth in panicles.
Link to Flora of China:http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=105522http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=105522
open map in a new windowtaxon distribution for Cannabis  acc. to Geobotanical Regions of Mongolia by Grubov (1955)
species: 1
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

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
from 1000 mm to 3000 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 Cannabaceae: 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
Leaf arrangement: (i)Arrangement of leaves at the stem.alternate (i)One leaf per node; distiche: arranged in two vertical rows, equitant
example: Phragmites

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.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)

Length of leaves: (i)How long is the leaf, be carefull in compound leaves, measure the complete leaf. from 21 mm to 50 mm
Leaf apex: (i)Appearance of the tip of leaf resp. leaflets in compound leaves.acuminate (i)Gradually tapering to a (sharp) point
example: Populus laurifolia?

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?serrate / dentate / crenulate (i)Margin saw-like or rounded teethed
example: Betula, Lophanthus (crenulate)

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

Petiole: (i)Leaf divided into stalk (petiole) and blade.with (i)Leaves with petiole (stalk)
shorter than blade (i)Petiol shorter than leaf blade
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.

Leaf colour upper side: (i)Shades of green on the leaf, upper side.green (i)Clear green
example: Tribulus terrestris

Leaf colour lower side: (i)Shades of green on the leaf, lower side.green (i)Clear green, in most species
example: Angelica decurrens

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 Cannabaceae: 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 Cannabaceae: 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 colour.colourless (i)Dry membranous
greenish (i)petals absent or not distinctly different from colours of leaves, only stigmas (white) or anthers (yellow) may differ in color
example: Chenopodium, Triglochin

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.absent or strongly reduced (i)No perianth leaves ensheathing stamen and/or carpels
example: Callitriche

simple, similar (i)Only one type of perianth leaves (tepals)
example: Tulipa

Diameter of flower: (i)Diameter of flower or flower head. 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

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

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.none or rudimentary (i)Hardly visible or absent, since perianth uniform
example: All monocots with uniform perianth, many Asteraceae and Apiaceae

Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured).5 (i)
example: Potentilla

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

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 Cannabaceae: 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

Carpel number: (i)Number of carpels (carpel: forming a simple pistil or part of a compound pistil, modified leaf).2
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

Style number: (i)Portion of the pistil connecting the stigma to the ovary.1
Stigma number per style: (i)Number of stigmas per style.2 (i)Two stigmas, resulting from two fused carpels with or without developed style
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

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.Flowers in inflorescence (i)No 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

axillary (i)Usually several inflorescences in axillary shoots or single flowers in leaf axils, main shoot remains mostly leafy
example: Tragopogon, Aconogonon

Inflorescence type: (i)Types of inflorescence. Attention: We here ask for the botanical nomenclature of inflorescences, which is sufficiently complicated. Tick only, if you are certain, or tick all inflorescence types that appear similar of these of the plant in question.spike (spadix) (i)All flowers sessile and crowded along a main axis, there may be several spikes on a shoot; sometimes axis thickened (spadix)
example: Plantago, Carex vesicaria, Vicia, Typha (spadix)

panicle (i)Branched, with flowers maturing from the bottom upwards
example: Phragmites

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
Solitary fruits (i)
nut or nutlet (i)Dry fruit with a single, hard stone inside (and usually a large often edible embryo)
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
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

Shoot/Stem (i)a young stem or branch
Spines, thorns or prickles: (i)Shoot with conspicuous spines, thorns or prickles.absent (i)Stem glabrous or hairy, but never with spines, thornes or prickles
example: Gentiana barbata

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
one larger tap root with side roots (allorhizous) (i)Plant with a conspicuous tap root
example: Scorzonera

Runners: (i)Plant must be excavated; shoots, subterranean shoots connected by runners.none (i)No runners or stolos visible
example: Dactylorhiza

Plant Use
General Use:other