The English flora - SeaweedAfrica

Collema.] LICHENES. 209
Borrer.— " The near affinity of this little Lie/ten with the L. crispus of
E. Bot. is obvious, and it may possibly be but a variety ; yet the scattered
mode of growth and the less tenacious substance of the thallus
which almost disappears in drying, seem to indicate a specific difference."
Borr.
7. C. turgidum. Ach. (turgid Collema); thallus irregularly
spreading- depressed slightly lobed and snbimbricated, the lobes
elevated thick verruciform rugged granulated, apothecia sessile
urceolate dull-brown, the border somewhat inflexed and tumid
externally rough with granulations. Ach. Syn. p. 313.
On stones, among mosses, England (Ach.).—Acharius appears to have
received this plant from England, but he has not stated upon whose
authority it is a native, and I am totally unacquainted with the species.
8. C. tenax, Ach.? (tenacious Collema); thallus rather glaucous
fleshy imbricated the lobes obtuse somewhat palmate, apothecia
depressed dilated reddish. Ach. Syn. p. 314. Lichen
tenax, E. Bot. t. 2349. (not Sivartz, nor Bernhardi.)
Alpine-situations, among mosses, N T . Wales, Rev. II. Davies.— See remarks
under the next species.
9. C. ceranoides, Borr. (horned Collema) ; lobes of the thallus
imbricated ascending pulpy dilated upwards proliferous terminated
with crowded erect elongated granules overtopping the
flattish apothecia. Borr. in E. Bot. Suppl. t. 2704./. 2.
Collema palmat urn, «. Ach. Syn. p. 319?
On chalky soil of the Sussex Downs, Mr. Borrer. Box-Grove, near
Chichester, Mr. R. J. T. Thomas, Hexham, Essex, Mr. K. For.ster.—^
" C. ceranoides is nearly allied to C. cristatum, with the larger van. of
which it is, in all probability, often confounded ; but it is distinguishable
by the clustered fastigiate granules, or ramuli, which compose its sur-
face. Acharius seems to have taken it for Lichen palmatui of Hud*. :
but, whatever this one plant may have been, that figured by Dill. t. 10.
/. 30, is proved, by the specimen preserved in his herbarium, to be the
L. pidmatut of E. Hot. (. 1635, with which the description in the Hist.
Muse, likewise accords. To this the /3. of Ach. ((.'. cornictdatum
Iloff'w.), probably belongs. It is possible that the species before us
may be the /,. tenax. /','. Bot. /. 8349, the original specimen ofwhich
has been sought in vain in the Smithian collection. We haT6 seen
neither authentic specimens of the L. tetUM of Swartz, nor Acharius 1
figure in the Stockholm Transactions, but the L. tenax o\' Bernfaardfs
paper in S ( hrader's Journ., w Inch is regarded as the same with Swart/'-,
must necessarily, from the figure, be a different Lichen from ours." Borr.
10. C. pliedtiie, Ach. {/>/