U L V A plantaginea.
Plantain-leaved Laver,
CRYPT0 GAM1A Algæ.
Gen. Char, Frond membranous or gelatinous. Seeds
solitary, scattered throughout its substance, under
the cuticle.
Spec. Char. Fronds several, membranous, simple,
oblong, obtuse, flat, entire, tapering at the base,
minutely warty, brown.
Syn. Ulva plantaginea. Roth. Cçttal. fa sc . 2, 243,
Tremella marina, calendulæ folio atro-virente et
verrucoso. D ill. Muse. 46. t. 9. ƒ 4,
G a t h e r e d by Mr. Turner on the Cromer coast, and by
Mr. Borrer at Southwick, Sussex. Dillenius received it from
Micheli, among whose unpublished plates, t. 34. f . 2, presented
to us by his heir Mr. Targioni Tozzetti, is a very gopd
figure of this plant, without a name.
From one small cartilaginous base arise several upright undivided
fronds, from 3 to 6 or 8 inches long, of a very dull
olive brown, oblong, obtuse, entire, flat, an inch broad, of a
firm membranous texture, not adhering to paper in drying, its
surface besprinkled with minute rather prominent warts. Dr.
Roth and Mr. Turner observe that the fronds are very generally
found perforated or eroded by some marine animals. The
base of each is very much attenuated. In form this species
considerably agrees with U. Linza, but differs in colour, flatness,
and greater firmness of substance, as well as in its rough
or warty surface. From U. Lactuca, t. 1551, with which
Roth contrasts it, there can be no difficulty in distinguishing
»he plant before us.
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