The foliar base, open obliquely, wholly wraps the stem only for a few centimetres.

The foliar base wraps completely the stem for a length of about 25 cm forming a sort of tubular capital.

The foliar basis, 1-1,6 m long, open on the side opposite to the petiole, presents fibrous margins.

Petiole, 10-30 cm long, rachis and foliar base, that wraps only partially the stem, provided of spines of various length and pointing in different directions.

The foliar base, which wraps completely the stem for a height of about 80 cm, is of pale green colour with a bluish waxy patina.

The foliar base, about 60 cm long, is covered by a thick brown reddish tomentum and envelopes only partially the stem in the outer leaves.

The foliar base, about 60 cm long is covered by a thick brown reddish tomentum and envelopes only partially the stem in the outer leaves.

The foliar base wraps completely the stem per a length of 0,6-1 m forming a sort of a tubular capital, just enlarged at the base, of ash grey colour with brownish apex.

The foliar base, of golden colour and covered by a white waxy patina, fully wraps the stem for a height of about 50 cm, thus forming a sort of elegant capital.

The tubular foliar base, obliquely open at the apex, of pale green colour, wraps totally the stem for a length of 25-30 cm, persisting dried for long time.

The tubular foliar base, open obliquely at the apex, 4-10 cm long, wraps totally the stem for a length of 2-6 cm, persisting dry for long time.

The foliar base is provided on the margins of thin pale brown fibres, about 0,5 mm thick, thickly arranged in two layers, wrapping the stem in the youngest part.

The foliar base, of variable colour, olive green, brown red or brown purple, glossy, wraps entirely the stem for a length of 60-70 cm, forming a sort of elegant capital.

The tubular foliar base, open obliquely at the apex, of pale green colour and initially covered, like the petiole, by a thin pale blue waxy patina, wraps entirely the stem for a length of 20-30 cm.

The tubular foliar base, open obliquely at the apex, of green grey colour dotted of white in the upper part, wraps totally the stem for a length of about 6 cm, persisting dry for long time.