Imperfect ground form

Abbreviations ig imperfect (ground form) o circular pg perfect (ground form)... 

Definition 6.4 . (a) A perfect higher member (of single coronoids) is defined by having the same formula as a Wold k > 1) circumscribed perfect ground form, (b) An imperfect higher member has the same formula as a A —fold circumscribed imperfect ground form. 

Fig. 6.2. Two isomers of the non-circular G systems imperfect ground form single coronoids.

Property 6.S An imperfect ground form or a circumextremal single coronoid, A, has neither an L — or P2—Taode hexagon. 

Instead of this elaborate specification of the (tiq 5q) formulas we shall be able to give a full account of them in terms of comprehensive spedfications and explicit expressions. All the three "pictures" are going to be invoked the Harary—Harborth—, the Balaban— and the new picture. But first some additional properties of the systems under consideration are needed. In this connection we shall introduce two subclasses of the ground forms and higher members perfect and imperfect. 

Figure 3 shows a dot diagram for the formulas of single coronoids as in Fig. 5.8. However, more detailed information about the extremal (A) systems is included formulas for ground forms and higher members, both perfect and imperfect, are indicated.

If X < -1, then B is an imperfect higher member, and an isomer of B can be produced by ( x —l)-fold circumscribing of the respective ground form. The formula of this ground form is retrieved as x+1 ... 

Macroscopic Appearance Represented by two mutable forms the imperfect form Monilia is generally a fine powdery whitish mold and the perfect form Neurospora is a rapid growing tenacious aerial mold that is pinkish with spore maturity. In grain both the whitish and the pinkish Neurospora are encountered. White Monilia has a remarkable resemblance to finely ground perlite and can easily be mistaken for it. On casing soil, the pink form is more common. Both are very rapid growing. 

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