According to one authors, green leaves ranks under snow, and the plant winters in a leafless state (; but to data of authors, in certain cases a rank winters with green escapes (Lapshin and the wintered leaves of autumn escapes completely dry up only in the spring. Here plant conditions, its vital and age state affect. To the rank carry on a rhythm of a listoobrazovaniye or to a summer zimnezelenym to plants, either to letnezeleny or to plants of transitional group between a summer zimnezelenymi and.
usually grow together along bottom edge, forming the boat (Kiel). The boat it is similar to a protective case, protects stamens and a pestle and interferes with visit of flowers small insects who eat pollen or nectar, but are not effective pollinators.
The world's largest sort of floral plants belongs to the bean - astragat (Astragalus) – about 2200 types; types of the sort a clover (Trifolium) uniting 320 types are widely known; acacia (Acacia) of 1200 tropical and subtropical types; mimosa (Mimosa) of 500 American tropical types and others. After cereals the bean - the major on the practical importance for the person group of floral plants. Bean are widespread worldwide, but tsezalpiniyevy and mimozovy meet mainly in tropics and subtropics where along with the papilionaceous make an important element of flora. Within the area the bean occupy very various habitats.
Leaves of the bean are various, but always the difficult. Stipules are always available, however often early fall down, or sometimes strongly expand (peas). Leaves and separate leaflets are capable to make any roundabouts or to develop for the night.
Androtsey at all bean consists of 10 stamens and there can be one - and dvubratstvenny. The structure is important for definition of childbirth within the considered family. At one childbirth androtsy mnogobratstvenny, when all 10 stamens free _ (childbirth: Sophora, ). At others — odnobratstvenny when all 10 stamens grow together, among themselves with tychinochny threads, forming a so-called tychinochny tube in which the pestle (childbirth a lupine, etc.). At last, majority of a rodov_semeystvo imeet_dvubratstvenny androtsy: 9 stamens grow together with tychinochny threads in a tube, and one stamen free. (childbirth: peas, lucerne, Vika, rank. The form of a tychinochny tube also happens various. In one cases it is cut off directly and the free ends of tychinochny threads of identical length (a rank, in other cases it is cut off slantwise. At stamens are quite often split, and then androtsy it seems polymeric. Papilionaceous very often have gipantiya (the specific detail of a flower which resulted from accretion of the bases of chashelistik, petals and stamens with fabrics of receptacles. Ginetsey almost always monokarpny, with top odnognezdny, seldom dvugnezdny.
The largest subfamily of the bean – papilionaceous – contains huge number cultural (soy, peas), fodder (a lucerne, Vick medicinal (cassia) and ornamental plants. The important place in this subfamily is taken by the Rank sort. The set of various types concerns to him. The greatest economic value is occupied by types of a rank meadow (sowing campaign).
There are morphological distinctions between spring and summer escapes. The last differ in the smaller height, more extended lower interstices, smaller number of metamer and ability to branching to of the 3rd order while spring escapes form escapes of enrichment of the 4th order. In the fall dry up run earlier, later - summer. Autumn escapes by the green leave under snow; preservation of leaves by the period of loss of snow and summer escapes is possible.
Fruit — monokarpiya: one - two-or the mnogosemyanny bean which is opened or chlenisty. Can be trimmed or not. Seeds rather large, with endosperms or without it, a germ with well cotyledons, a straight line (at and mimozovy) or bent (at papilionaceous).
Rank the meadow — the grassy perennial polikarpichesky dlnniokornevishchny plant with the resumed escapes extended lianoobrazny vegetative and which elevated development proceeds on summer, is more rare to winter type.