by smaller leai’cs, or such as are decaj’ed, as may he seen in f. 1 and 2. They a re every
where bifarious, closely imbricated over th e u p p e r side o f th e stem, and placed
a lte rna te ly, witli g re a t re g u la rity and exactness ; divided in to two very unequa l con-
duplicate lobes, o f which th e up p e r one is much th e la rge st, convex on th e uppe r
surface, more o r less smooth, and even glossy, o f a n ovate figure app ro a c liin g 'to round,
w ith its m a rg in sometimes entire , b u t more frequently spinuloso-dentate, th e te e th
b e in g o f very unequal sizes, placed a t d is tan t b u t u n c e rta in inte rva ls, an d generally
in cu rv ed ; th e in fe rio r division o r lobe is scarcely on e -th ird so la rge as th e supe rior,
to th e un d e r side o f which it is closely appressed in a d ire c tio n oblique w ith rega rd to
th e stem, its form is oblong o r ligu la te , its ma rgins every where dentato-spimilose, with
th e te e th occasionally recurved. The cellules are very small, roundish ; th e color a dark
olive -gre en, sometimes inc lin in g to a yellow-brown.
T h e re is one S tipule ( f 5 ) to each p a ir o f leaves, oblongo-quadrate, and, equally with th e
lesser lobes o f th e leaf, which it exa c tly resembles in size and shape, spinuloso-dentate
a t the mai’g in , h aving its te e th in like m an n e r now and then recurved.
R E F E R E N C E S T O T H E P L A T E .
1. J , Icevigata, natural size.
2. The same, m a g n ifie d .............................................................................................................. ®
S. Portion o f the stem, with ihe leaves and stipules, seen from the under side . . 4
4. L e a f ................................................................................................................................................ 3
5. S t ip u l e ........................................................................................................................................... 3
Dr. Schrader appears to be th e first b o tan is t who detected th is species, and published i t as
distinc t from J . platyphylla, to which I must confess' i t bears so close an affinity (an d especially
to th e var. Thuja) in every th in g , b u t th e spinuloso-dentate m a rg in s o f th e lesser lobes o f th e
leaves and o f llie stipules, th a t I c an n o t help offering i t as my opinion th a t fu tu re discoveries
may prove it to be a variety, though a very strik in g ly ma rked one. At th e same tim e I m u st
observe th a t, in all th e specimens 1 have examined o f J . p la typ h y lla , I have never found th e
stipule s and smaller lobes o f th e leaves to be otherwise th a n q uite e n tire a t th e ma rgins. The
difference in size and in th e smoothness o f su rface, mentioned by Schrader, will n ot hold good,
th e same b e ing found o ften to ex ist in an equal degree in J . platyphylla.
Dr. Ro th has done no more th a n copy th e description o f Schrader, and add synonyms from
Micheli and Dillenius, which appe a r to me ra th e r to belong to th e J . Thuja o f Dickson, so th a t
n o new lig h t is th row n on th e m a tte r in ids work. L ama iuk also describes a p la n t un d e r th e
n am e , J . Icevigata, in his Flore Françoise, and cites Schrader's as a synonym ; b u t his words are
a t variance with such a reference, so th a t, th o u g h I have th o u g h t it best to quote him above, I
have done i t with doUbt, and I fear i t m u st be admitted, from his description, th a t his J . loevigata
is, in re a lity, a to ta lly different species; “ Les feuilles,” to use his words, “ so n t nombreuses
serrées, embriquées, larges, courtes, trè s obtuses, presque tronqué e s, surmontées d ’une pe tite
pointe acerée, entiè re s su r leurs bords, dépourvues de ne rvure s e t de stipules, disposées su r deux
ran g s d ’une manière peu prononcée.”
The fructification, wliich I have never ye t seen, was also unknown to Schrade r and Roth.