The fruit form in pendulous clusters long with 6 20 seeds; each seed is a small nut long, fully enclosed in a bladder-like involucre.
42.
Though described as a single species, the authors noted the wide grade of variation in the involucre morphology, ranging from simple to ones with extensive spines.
43.
The inflorescence is a head of flowers roughly a centimeter wide, the flowers held in a bowl-like involucre of wide, jagged-toothed bracts.
44.
The phyllaries, that is the individual bracts that make up the involucres, number from 20 up to 140 in 3 to 7 series and are single nerved.
45.
As specimens of " C johnsonii " have a full morphology range between the three involucre types, the possibility of multiple species is hard to prove or disprove.
46.
Species of " Riella " are distinguished using morphology of the spores or archegonial involucres, since the gametophytes of the genus possess few distinguishing non-reproductive characters.
47.
Hazels have simple, rounded nuts 1 2.5 cm long and 1 2 cm diameter, surrounded by an involucre ( husk ) which partly to fully encloses the nut.
48.
In the family Betulaceae, notably in the genera " Corylus ", the "'involucre "'is a leafy structure that protects the developing nuts.
49.
Beneath the flower proper, oval bracts of the plant form an involucre, with soft hairs on each; further bracts are bristled and sit at right angles to the flowers.
50.
In the related family Betulaceae, notably in the genera " involucre, which differs in being more leafy in appearance, but performs a similar role in protecting the developing nuts.
