208 SmitH—NEW ORCHIDS. 
Habenaria ophiocephala, W. W. Sm. Sp. nov. 
Species quoad habitum ex affinitate H. pectinatae, Don 
sociisque ejus sed floribus 1-2, labello integro lineari-lanceolato 
praelongo, calcare ad 7 cm. longo praeter alia signa bene notata ; 
a speciebus cognitis sectionis Hologlossae, Hook. f. longe recedit. 
Planta 25-30 cm. alta tuberidiis magnis cylindricis crassissi- 
mis. Caulis basi squamis longis 2-3 circumdatus. Folia vulgo 
tria basi breviter vaginatim angustata; lamina 10-15 cm. longa, 
2-4 cm. lata, oblonga vel oblongo-lanceolata, apice plus minusve 
acuta. fnflorescentiae vulgo biflorae, bracteis ad 4.5 cm. longis 
ovato-lanceolatis acutis, floribus magnis albis, calcare sepalisque 
lateralibus pallide viridibus exceptis. Sepala inaequalia; dor- 
sale late ovatum, 2 cm. longum, 1.6 cm. latum, apice obtusa 
acutatum; lateralia deflexa ovato-lanceolata valde falcata, 2.7 
cm. longa, ad basim 8 mm. lata, acuminata. Petala sepalis 
lateralibus subsimilia sed 2 cm. vix superantia. Labellum fere 
4 cm. longum, integrum, anguste lineari-lanceolatum, basi circ. 
6mm. latum; calear ad 7 cm. longum cylindricum vix curvatum 
apice paulo dilatatum: Gynostemium magnum circ. 1.2 cm. 
altum, vix expansum fere 2 cm. latum, subquadratum; pollinia 
ovoidea circ. 4 mm. longa, caudiculo circ. 8 mm. longo, gland- 
lua magna orbiculari; antherae locelli distantes ; rostellum late 
triangulare; structuram stigmatis e materie haud bene siccata 
non intellego. Ovarium ad 3.5 cm. longum. 
‘Upper Burma :—Laktang, at 7,000 ft. Epiphyte (?) grow- 
ing low down and therefore well shaded in the temperate rain- 
forest. Flowers white, except spur and lower petals (sepals?) 
which are pale green. A remarkable plant. The two stamens 
are widely separated by the large stigmatic area at the base of 
which is the entrance to the long sack-like spur. Honey is 
secreted at the base of the spur in large quantities. The spur 
is so long that no insects save butterflies and moths could get at 
the honey unless they went into the tube. One tube was bitten 
through at the base, another had a quarter of an inch of honey in 
it. Not common. mae! always solitary. July r1919.’’ F. 
Kingdon Ward. No. 3336 
The species recalls H. pectinata; D. Don and H. Susannae, R. 
os but it has a long simple labellum. It is very different from 
g in section Hologlossae of Hooker. Its affinities in 
pi of the form of the lip seem to be with the species mentioned 
above. In the dried state the outline of the flower resembles the 
bluntly triangular flattened head of a viper. 
a} Habenaria (Platanthera) oreophila, W. W. Sm. Sp. nov. 
Species ex afinitate P. interruptae, Maxim. et P. japonicae, 
