176 
MR. H. N. RIDLEY ON PLANTS 
angusta triloba 5 mm. longa, lobis lateralibus oblongis ovatis obtusis, lobo medio 
longiore obcuneato cuspidato, carina mediana aurantiaca crassa carnosa tristriata. 
Columna, longiuscula, superne dilatata, alis majusculis rhombodeis-triangularibus. 
Anthera parva, ovata, rostro bifido.  Pollinia hemispherica. Ovarium tri- 
carinatum. 
Camp VIe, 5500 ft. 
Allied to D. macrolobum, J. J. Sm., but with much shorter stems and a narrow 3-lobed 
lip and a much longer column. The claw of the lip seems to be tubular, the margins 
being joined above. The flowers seem to have been yellowish-white with an orange keel. 
DENDROBIUM ($ SPECIOSA) AMPHIGENYUM, Ridl., sp. nov. 
Caules superne paullisper dilatati, flavi, canaliculati, 12 cm. longi, 3 mm. crassi, 
diphylli. Folia ad apicem caulis 2, coriacea, elliptica, lanceolata, apice paullo 
angustata, obtusa, basi angustata, 6 cm. longa, 1°5 em. lata, petiolis canaliculatis 
5 mm. longis. Pedunculus terminalis, erectus, gracilis, 2:5 cm. longus, pedicellis 
2 cm. longis. Bractea ad basin pedunculi ovata, lanceolata, 3 mm. longa; bractea 
interior tubulosa, 2 mm. longa; bractez florales lanceolate, acuminate, 2 mm. 
longs. Flores 2, in caule quoque mediocres. Sepala late ovata, obtusa, 5 mm. 
longa et lata; mentum bigibbum, apice latum, saccatum, subglobosum, 4 mm. 
longum, roseum, superue prope labellum cum gibbo minore. Petala tenuiora, 
angustiora et breviora, spathulata, venis roseis. | Lobellum ambitu late obhastatum, 
5 mm. longum, 7 mm. latum, ungue brevi, lobis lateralibus elongatis patentil us 
lanceolatis obtusis, lobo medio breviore bilobo lobis 2 brevibus oblongis cum 
mucronulo minuto roseo in sinu orto, cum carinis 2 e basi ad discum incrassatis 
subpyriformibus roseis et pulvino oblongo albo versus apicem lobi sito. Columna 
lata, subquadrata, alis brevibus crassis rotundatis, fovea stigmatica lata quadrata, 
marginibus rectis, filamento lineari, pede longo, admodum curvo. Rostellum 
latum, rectum. 
Camp VIa, 3100 ft. 
Allied to D. Kingianum, Bidw., of Australia, but with a very different four-lobed 
lip. 
The flowers appear to have been mainly rose-colour with a yellow lip. 
DIPLOCAULOBIUM GRANDIFLORUM, Ridl., sp. nov. 
Pseudobulbus ad basin conicus, gradatim in caulem validum 40 cm. longum basi 
l em. superne 3 mm. crassum angulatum purpureo-brunneum politum apice 
dilatatum attenuatus. Bractee ochre®, lanceolate, acuminatze, acute, 1:5 longe. 
Pedicellus cum ovario 0'5 cm. longus. Sepalum posticum lanceolatum, acuminatum, 
25 em. longum, 7 mm. latum, lateralia lanceolata, acuminata, 2:5 cm. longa, 4 mm. 
lata; mentum ovatum, obtusum, curvum, 5 mm. longum; omnia rosea. Petala 
elliptica, obtusa, alba, 2 cm. longa, 1 cm. lata. Labellum breve, 8 mm. longum, 
ungue superne dilatato, lobis lateralibus oblongis truncatis 2 mm. longis, lobo medio 
oblongo obtuso 2 mm. longo, carina in disco inter lobos laterales elevata. Columna 
2 mm. alta, basi dilatata, pede 5 mm. longo. 
