falcato-secimd (f. 2 ). T h e texture o f th e le a f is ra th e r firm, b r ittle when dry: th e
cellules are very compact, extremely small, ovate o r oblong, and may often be observed
to be a rranged in longitudina l series; many o f The cellules a rc opaque, whilst
otliei-s are semi-pellucid, as is represented a t f. 6. T he ir color is ra th e r a deep, p u r p
lish -b row n ; a t th e base o f th e p lan t, o f a dirty hue.
Mr. George Donn, o f Forfar, communicated specimens o f th is p lan t, which he g a the red
in 1795, both in th e Clova and th e Breadalbane mounta ins, to Dr. Sm ith, a few years since,
marked « J . adunca o f Dickson (th e J . junipe rina o f Swartz and th is w o rk ). On its being
ascertained to be a new species, my kind friend, Mr; L je ll, applied to Mr. Donn for o th e r
specimens, which he had been so fo rtu n a te as to g a th e r on anothe r o f th e Scotch mountains,
in 1802, and he has subsequently informed me o f two new stations for this p lant, detected in
September, 1813. I t is a species th e most d is tin c t o f any I am acquainted w ith , and, among
th e British .Timgermanniæ, is perfectly “ sui g e n e ris j” th o u g h , in mode o f grow th , and in th e
disposition o f the leaves, some kin d o f affinity may be observed w ith J . junipe rina. In th e
shape o f the leaves, as well as in th e ir direction, i t beai's a n e a re r approach to a lai'ge, and,
I believe, uiidescrihecl species found a t St. H e le n a ; b ut, besides th e m uch smaller size o f
th e forme)-, th e color of th e two are to ta lly diffei-ent. O f o u r pre sent p lant, u nfortuna te ly,
no fructification has yet been m e t with. I t appears to be confined to a few o f th e loftie st o f
th e h ighland mounta ins, and, even in these situations, has only be en seen by its discoverer,
whose name it bears, an d who has co n tributed so m uch by his indefatigable in d u stry to th e
Flo ia o f th e B ritish Isles.
R E F E R E N C E S T O T H E F I G U R E .
Plants o f J . Donniana, natural size.
A n individual m a g n ifie d ..................................................................................................... 6
Portion o f the same, seen on the anterior s u r fa c e ................................................. 4
The same, seen on its posterior surface ..................................................................... 4
A le a f ....................................................................................................................................... 3
Portion o f d itto ................................................................................................................... 2
Smaller portion o f d i t t o ..................................................................................................... I