ORCHIDACEA 
Luzon, Benguet Province, Mount Pulog, Elmer D. Merrill 6476, May 
1909; Mount Santo Tomas, George Boettcher, May 1918. Flowers rose 
colored. 
Dendrochilum (§ Platyclinis) niveum Ames sp. nov. Radices 
validae, glabrae. Pseudobulbi caespitosi, statu juvenili vaginis 
tubulatis tecti. Vaginae usque ad 4 cm. longae, obtusae. Folium 
ligulatum, circa 1 dm. longum, 2 cm. latum, utrinque attenua- 
tum, in sicco nervosum, nervo medio subtus magis prominenti. 
Pedunculus cum racemo 21 cm. longus, gracilis, infra inflores- 
centiam bractea singula ornatus. Racemus gracilis, 12 cm. longus, 
laxiflorus. Bracteae inflorescentiae glumaceae, +3.5 mm. longae, 
convolutae, ovaria pedicellata superantes. Pedicellus cum ovario 
circa 3 mm. longus. Flores distichi, nivei, circa 3 mm. distantes. 
Sepala lateralia 5-6 mm. longa, circa 1.5 mm. lata infra medium, 
triangulari-lanceolata, acuminata, valde acuta, trinervia. Sepalum 
dorsale 5-6 mm. longum, vix 2 mm. latum, anguste oblongo- 
lanceolatum, acuminatum, acutum, trinervium. Petala 5 mm. 
longa, circa 1 mm. lata, oblongo-lanceolata, minutissime denti- 
culata, acuminata, valde acuta, trinervia. Labellum usque ad 
3 mm. longum, trilobatum, callo parvo in nervo utroque paulo 
infra medium; lobi laterales tertiam partem labelli aequantes, 
rotundati, obtusi, minutissime denticulati; lobus medius sub- 
orbicularis, 2 mm. longus, vix 2 mm. latus, subito acutus vel 
obtusus. Columna circa 2 mm. longa; stelidia lateralia prope 
medium columnae exserta, longe lineari-triangularia, acuta, alam 
apicalem haud aequantia; ala terminalis variabilis, minutissime 
lobulata vel retusa. 
The nearest affinity of Dendrochilum niveum appears to be 
D. filiforme Lindl., which has smaller flowers in denser racemes 
and a very different labellum. The type consists of a single plant 
in which the pseudobulb is immature and still clothed by the 
