Nardia robusta, Du.
G row in g in tufts, stems erect ( i l c. m.), innovant
at the apex, robust, leaves olive or
rubiginous, circular when expanded, with an
obtuse, rather lunate, shal low sinus at the
apex ; when growing, loosely imbricate, distichous,
deeply concave.
Sarcoscyphus Ehrhardtii robustus, De Not.
Comm. Ital. fig. iv. Nardia robusta, Lindb
Carr, and Pears. Exs. No. 157.
Dr. Carrington writes that : “ N. robusta Lind
seems to me only a stouter variety of emarginata
with nearly black stems and more distant, cordate
leaves, which are seated at right angles with the
stem, less concave, sometimes plane or slightly
convex, and of firmer texture. The colour fs an
obscure indigo green, turning.black, but otherwise
scarcely altered when dry.”
Nardia alpina, Carr.
Dioicious. Den s e ly cæspitose, stems rigid
leaves patent, approximate, orbiculate, v e r t i cally
concave, lobes obtuse, connivent, sinus
acute ; involucral leaves larger, convolute, involuc
re short, near ly immersed ; cells smaller
g lo s s y pitch black.
Nardia alpina, Carr, and Pears. Exs. No.
79 , 158«, 1580. Sarcoscyphus alpinus, Gott.
and Rabh. Exs. No. 453, 535. Nardia emarginata
g picea, Carr. Br. Hep. p. 14.
On rocks.
var. laxior, Carr, and Pears. Exs. No. 80.
The plant is intensely black, a warm brown
by transmitted light, barren shoots | inch, prostrate
at the base, with pectinate pinnate leaves,
exactly round Inflexed obtuse lobes, and acute
sinus, equal to one-third or one-fourth of the length,
very convex and narrowed at the base ; fertile
shoots stouter, with large involute involucral leaves
which nearly hide the short roundish involucre ;
leaf cells smaller than in var. minor of N. emarginata ;
the marginal ones more minute ; the perigonial
leaves are fewer in number, and terminal.— Carr. I. c.
— {Plate 5, fig. 66.)
Nardia revoluta, N., Lindb.
Stems matted and stoloniferous at the base,
dense ly tufted ; leaves subcomplicate, erecto-
patent, imbricate when dry, rigid, round or
elliptic from a na r rowe r half-embracing base,
de eply and acutely bidentate, margin na r rowly
refiexed th r o u g h o u t ; involucral leaves resembling
those of the stem but larger.
Sarcoscyphus revolutus, Ne e s Leberm. IL,
419, iv-, 34. Jungermannia atrata. Mitt.
Hep. E. Ind. p. 90. Nardia revoluta, Carr.
Gre v il lea II., p. 88, t. 18, f. 19-25. Gym