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SERTULUM CHINENSE QUARTUM. 163
LiiuUey himself speaks doubtfully of its constancy in Coeloglosmm*
and admits its occasional absence in Gymnadenia.\ With regard to
the length and shape of the spur, all gradations occur, quite uncon-
nected with the presence or deficiency of the stigmatic processes ;
although the existence of this appendage may be fairly regarded as a
somewhat important character, its modifications in form and size seem
of no more value than those of the labellum, sepals, or petals. Nor
can it well be maintained that the obliquity of the anther-cells is of
any special structural importance, even were not the differences in this
regard between two such closely allied species as 2f. bi/olia and H.
chlorantlia a convincing argument. The plant described by me should
therefore bear the name of Habenaria Sampsoni.
SERTULUM CHINENSE QUARTUM: A FOURTH DECADE
OF NEW CHINESE PLANTS.
By H. F. Hance, Ph.D., etc.
and
1. Indigofera (Euindigofera) melilotoides, n. sp. ; caulibus erectis
angulatis elevato-striatis glabriusculis, foliis pinnatim trifoliolatis
foliolis cuneato-linearibus obtusissimis emarginatis brevissime petiolu-
latis adpresse puberulis, stipulis inconspicuis, racemis angustis virgatis
folia multoties superantibus multifloris, calycis puberuli dentibus
lineari-setaceis, petalis cserulescenti-albis carina apice macidata, legu-
minibus ovoideis compressissirais 1- rarius 2-spermis glabris.—In
rupestribus coUium aridorum prope Peking, m. Augusto 1SG5, coll.
Dr. S. W. Williams ;
circa Jehol invenit R. P. Arm. David. (Exsicc. n.
12469.)
A remarkable species, with exactly the habit of a Melilot, havino-
seemingly no direct affinity with any other species known to me. The
inflorescence is somewhat like that of /. anstralis, Willd., or /. Bun-
geana, Walp.,—also received from Dr. Williams,—which however is
described as having a linear few-seeded pod. Dr. Williams has sent
me either a very closely allied species, or a variety of the present, with
the leaflets thicker in texture, and pinnately bijugous; but the specimen
is not sufficiently perfect to warrant a decided opinion.
* Gen. et Spec. Orchid. 302. t Op. cit. 275.