Petal number

The variable number of sepals and petals in Conostegia appears to be linked to the variable width of the hypanthium. Most Melastomataceae have the same number of sepals and petals. In Conostegia, there is the occasional decoupling of sepal and petal numbers with sepals keeping the original merism and petals being variable. 

Of all these, probably P-phenethyl alcohol (2) comes closest to the odor of fresh rose petals however, mixing all these components does not reproduce the total fine character of the natural oil. It has been determined that a number of trace constituents representing less than 1% of the volatiles are critical to the development of the complete rose fragrance (10). These include cis- and trans-i.ose oxide (1), nerol oxide (12), rose furan (13), /)i7n7-menth-l-en-9-al (14), P-ionone (15), P-damascone (16), and P-damascenone (3). 

When mitosis is blocked by colchicine, the treated cells may be left with an extra set of chromosomes. Plants with extra sets of chromosomes are typically larger and more vigorous than normal plants. Flowers developed in this way may grow with double the normal number of petals, and fruits may produce much larger amounts of sugar. 

Tea flowers are globular, about 3 to 5 cm in diameter, white, and delicately fragrant. They are borne in the axils of scale leaves (small leaves that do not develop further) and may occur singly or in small clusters. There are five to seven petals and an equal number of sepals. The flowers are mostly self-sterile and are produced in cycles corresponding to leaf growth, and require 9 to 12 months to form mature, round seed pods 1 to 1.5 cm in diameter. The tea plant is not generally allowed to flower during production cycles, with only a small number of the plants allowed to go to seed production to maintain seed stock. 

On transverse section of the pedicel, two kinds of laticifers, a convex arc and a concave one, were observed in the peripheral bundle and in the central one, respectively. The placenta traces (placentae) and the valve traces (valves) through the capsule wall appeared light microscopically as dense masses of branching vascular tissues in chlorenchyma within the epicarp. The former were fewer in number and smaller in diameter than the latter. The placenta traces contained laticifers but no fibers. The valve traces became the main source of latex. No laticifers were detected in the ovule however, the terminals of the laticifers were observed near the junction of the placenta and ovule. Laticifers appeared in the phloem of the sepals and petals during blooming. Laticifers were detected in the stamen traces in the thalamus but not in the stamens. The ends of laticifers were detected in ovule traces. The diameters of laticifers in the ovary 2 weeks before petal fall were as large as those in the mature capsule. 

When either petals or sepals, or both, are present in more than the usual number, the flower is said to be "double, as the cultivated... 

When the distinct petals are four in number, and arranged in the form of a cross, the corolla is called Crttciform. Example Mustard and other plants belonging to the family Cruciferse. 

II. Order Principles.—Palmew or Palm Family.—Tropical or subtropical shrubs, rarely trees, having unbranched trunks which are terminated by a crown of leaves, in the axils of which the flowers are produced. The leaves are well developed with pinnate or palmate blades and a fibrous sheathed clasping petiole. The flowers are small, of one or two sexes, and crowded on a spike or spadix, which is subtended by a large bract, or spathe which may become woody, as in the Cocoanut Palm. The perianth consists of 6 parts in 2 whorls (3 sepals and 3 petals) or it may be inconspicuous or absent. The stamens are 6 in number, rarely 3, inserted below the ovary. The ovary is superior, of 3 cells, with central placenta. The fruit is either a nut, with leathery epicarp, fibrous or cellular mesocarp and thin membranous endocarp, or a drupe (Cocoanut) with leathery epicarp, broadly fibrous mesocarp and stony endocarp, or a berry as in the Date Palm, Phoenix, with membranous epicarp, succulent mesocarp and soft succulent endocarp. The seeds are albuminous with the reserve food frequently in the form of hard cellulose (ivory-nut-palm). 

Isostem onous.—Having the stamens and petals each in one whorl and of the same number. 

Notet usually only the sepals and petals are taken into account, not the number of stamens, ovaries, or locules of the ovary. 

The stamens when twice the number of the tepals or petals by their... 

Although the placement of all the elements presiding Deities is shifted a station in the Siddhar allocations, still the number of petals and the distribution of the letters remains for the most part consistent with the other systems. Bhogar gives this chakra two biju ("seed") mantras the biju of Brahma "Nam" the earth biju "Lam". The biju "Bhu", here also mentioned is the name of earth... 

Comparative anatomical studies reveal that some structural features are basically similar - e.g., flowers generally have sepals, petals, stigma, style and ovary but the size, color, number of petals, sepals etc., may differ from species to species. 

Branched-chain alkanes are common in cuticular wax although much less widely distributed than n-alkanes. They comprise a major proportion (nearly 50%) of the alkane fraction from some Nicotiana and Geonium species. Generally, the iso- and anteiso-alkanes (cf Table 1) with odd and even numbers of carbon atoms, respectively, are the main examples although compounds with internal and/or multiple methyl branching and even cycloalkanes have been reported as minor components" " . iso-Alkanes with even-carbon numbers (e.g. C32 and C34 compounds) occur in wax from rose and lavender petals, respectively, and iso and anteiso homologues lower than the range listed in Table 4 (e.g. C21-C23 compounds) have been found in lilac blossom. ... 

Following pollination by wind or insect, the petals are shed and the pistil elongates to form a pod (silique) with two carpels separated by a false septum. A single row of seeds develops within each of the two loculi (Fig. 6). The number of seeds per pod varies with the species, form, and environment, but normally a pod contains between 15 and 40 seeds. At maturity the... 

---