entha aquatica.
Mentha viridis.
Fraxinus vulgaris!
Sambucus nigra.
Zinnia.
Phylica.
Beta.
Rumex, sp.
Ulmus campestris.
Casuarina rigida.
Abies excelsa!
Lilium Martagon!
candidum.
*Asparagus officinalis!
Sagittaria sagittifolia.
Epipactis palustris.
Triticum repens!
Lolium perenne!
Phleum pratense.
Juncus conglomeratus!
Scirpus lacustris.
Equisetum Telmateia.
limosum.
fluviatile.
arvense!

Among the more important papers relating to this subject may be
mentioned:

Moquin-Tandon, 'El. Ter. Veg.,' p. 181. Kros, 'De Spira in
plantis conspicua.' Morren, 'Bull. Acad. Roy. Belg.,' 1851,
tom. xviii, part i, p. 27. Milde, 'Nov. Act. Acad. Leop. Carol.
Nat. Cur., 1839. Ibid., vol. xxvi, part ii, p. 429,
_Equisetum_. Irmisch, 'Flora,' 1858, t. ii, _Equisetum_.
Vrolik, 'Nouv. Mem. Instit. Amsterdam,' _Lilium_.
Schlechtendal, 'Bot. Zeit.,' xiv, p. 69, et v, p. 66. De
Candolle, 'Organ. Veget., t. i, p. 155, tab. xxxvi, _Mentha_,
_&c._ Alph. de Candolle, 'Neue Denkschr. Allg. Schweiz.
Gesellschft.,' band v, tab. vi, _Valeriana_. Duchartre, 'Ann.
Sc. Nat.,' ser. 3, vol. i, p. 292. 'Gardeners' Chronicle,' July
5, 1856, p. 452, _c. ic. xylogr._, spiral branches from
Guatemala--tree not known.

=Spiral twisting of the leaf= is scarcely of so common occurrence as the
corresponding condition in the stem. In _Alstroemeria_ it occurs
normally, as also in some grasses. In the variety _annularis_ of _Salix
babylonica_ the leaf is constantly coiled round spirally. A similar
contortion occurs in a variety of _Codiaeum variegatum_ lately introduced
from the islands of the South Seas by Mr. J. G. Veitch.

Fern fronds are occasionally found twisted in the same manner, _e.g._
_Scolopendrium vulgare_ var. _spirale_.[362]

=Adventitious tendrils.=--Under ordinary circumstances tendrils may be
described as modifications of the leaf, the stipule, the branch, or of
the flower stalk, so that it is not a matter of surprise to find
tendrils occasionally springing from the sepals or petals, as indeed
happens normally in _Hodgsonia_, _Strophanthus_, _&c._

M. Decaisne[363] found a flower of the melon in which one of the
segments of the calyx was prolonged into a tendril, and Kirschleger
records a similar instance in the cucumber, while Mr. Holland ('Science
Gossip,' 1865, p. 105) mentions a