ORCHIDACE# 
elongated tubular sheath that conceals the petiole of the leaf and 
the base of the peduncle. 
Luzon, Kalinga Province, George Boettcher, March 19, 1918. 1000 me- 
ters altitude. Flowers white. 
Dendrochilum (§ Platyclinis) propinquum 4 mes sp.nov. Ra- 
dices fibratae, elongatae. Rhizoma repens. Pseudobulbi 2.5-3.3 
em. longi, anguste pyriformes, approximati, superne attenuati, 
monophylli, juniores vaginis tubulatis acutis pseudobulbum su- 
perantibus inclusi, insicco valde rugosi. Folium petiolatum, 17-20 
em. longum, circa 3 cm. latum, oblongo-lanceolatum, utrinque 
attenuatum, nervosum, subacutum, nervo marginali utrinque ad- 
dito, medio subtus multo magis prominenti, lamina folii coriacea. 
Petiolus sulcatus. Pedunculus folio fere explanato synanthus 
eoque fere duplo longior, nutans, subdensiflorus. Racemus gra- 
cilis, 12-16 cm. longus. Bracteae inflorescentiae circa 5 mm. 
longae, convolutae, glumaceae, ovaria pedicellata superantes, ob- 
tusae, persistentes. Flores distichi, flavidi. Sepala lateralia 4.5—5 
mm. longa, 2 mm. lata, ovato-lanceolata, subacuta, trinervia, ecari- 
nata, nervo medio solo subtus prominenti. Sepalum dorsale 5 
mm. longum, oblongum, obtusum, trinervium. Petala 4 mm. 
_ longa, 2.5 mm. lata, cuneato-ovata, obtusa, trinervia. Labellum 
simile, simplex, 4mm. longum, 2.5 mm. latum, breviter unguicu- 
latum, prope basim incrassatum, ad apicem subacutum; discus 
ecallosus, trinervius, nervis incrassatis. Columna crassa, 1.75 mm. 
longa, columnae Dendrochili bicallost similis, lacinia utraque re- 
ducta in dentem obtusum alae terminali adsistentem, cujus illa 
pars fieri videtur; ala terminalis paucidentata. 
Dendrochilum propinquum is anear ally of D. bicallosum Ames. 
From this species it differs conspicuously in the ecallose lip which 
is similar to the petals. 
The structure of the column brings D. propinguum into that 
