On some Plants in the H. C. Botanic Gardens. 367 



Char. Gen. — Perianthium bilabiatum : labium superius 

 sepalis et petalis, inferius labello formatum. Sepala lateralia 

 obliqua, cum pede columnae connata. Petala angustiflora. 

 Labellum cum pede columnae articulatum, indivisum vel tri- 

 lobum, cristatum callosum vel nudum. Columna basi longe 

 producta. Pollinia 4, per paria collateralia. 



Habitus. — Herbae epiphyticce, Caules simplices vel ra- 

 mosi, apice in quibusdam flagelli in modo attenuati foliis 

 denudati florigeri. Folia disticha, compressissima, scepius 

 scalpelliformia. Pedicelli florum basi paleis cincti. In- 

 florescentia centrifuga i vel irregularis. Flores terminates 

 vel axillares, vel in speciebus caulibus apice attenuatis quasi 

 racemosi, invicem expandentes, inconspicui. 



Genus structura floris a Dendrobiis quibusdam, (exempli 

 gratia D. crumenato), nullo modo diversum. Folia nullo modo 

 equitantia. 



A. JenMnsii (n. sp.), caulibus spithamseis, foliis anguste 

 scalpelliformibus obtusis subteretibus, floribus solitariis ter- 

 minalibus et axillaribus, labello spathulato-obovato apice 

 sub-truncato undulato reflexo, columnae pede longissimo 

 trivenio apice bifurco. 



Hab. — Assam, Major Jenkins, by whom it was introduced 

 into these Gardens, where it flowers in October. 



Descr. — Stems simple, grouped together, scarcely more than a 

 span long. Leaves "narrow scalpelliform, compressed, 2£ inches 

 long, 1^ line broad, very fleshy, obtuse. Flowers terminal, solitary, 

 rather large, white. Pedicel 1^ inch long. Perianth two-lipped, 

 upper lip formed by the sepals and petals, the lower by the label- 

 lum. Upper sepal lanceolate-oblong : the lateral much broader, 

 very oblique, united with the foot of the column. Petals spathulato- 

 lanceolate, rather narrower than the third sepal, with reflexed 

 spreading pointi. Labellum entire, ascending- reflexed, revolute to* 



3 B 



