-n m 
SERTULUM CHINENSE QUARTUM. 168 
Lindley himself speaks doubtfully of its constancy in Celoglossum,* 
and admits its occasional absence in Gymnadenia.t 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 ; and 
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 A. bifolia and H. 
chlorantha a convincing argument. The plant described by me should 
therefore bear the name of Habenaria Sampsoni. 
SERTULUM CHINENSE QUARTUM: A FOURTH DECADE 
NEW CHINESE PLANTS, 
By H. F. Hance, Pu.D., ETO. 
l. 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 ceerulescenti-albis carina apice maculata, legu- 
minibus ovoideis compressissimis l- rarius 2-spermis glabris.—In 
rupestribus collium aridorum prope Peking, m. Augusto 1865, coll. 
W. Williams; circa Jehol invenit R. P. Arm. David. (Exsice. n. 
12469.) 
A remarkable species, with exactly the habit of a Melilot, having 
seemingly no direct affinity with any other species known to me. e 
inflorescence is somewhat like that of /. australis, Willd., or Z. Bun- 
geana, Walp.,—also received from Dr. Williams,—which however is 
deseribed 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 speci- 
men is not sufficiently perfect to warrant a decided opinion. 
* Gen. et Spec. Orchid. 302. t Op. cit. 275. 
