NEW 01^ NOTEWORTHY ORCHIDS 
Acoridium marginatum Ames sp. nov. Herba epi- 
phytica, caespitosa, maxime A. rhombophoro affinis, quod 
haec species habilu el structura conspicue simulal. Radices 
• albidae, fibratae. Pseudobulbi conferti, anguste obpyri- 
V, formes, in sicco valde rugosi, monophylli. Folium oblongo- 
lanceolalum, bene marginatum, apice rotundatum, apicu- 
latum, usque ad basim attenuatum, in petiolum contractum. 
Pedunculus gracilis, cum racemo folium permulto excedens. 
Racemus usque ad viginlillorus, rachide anfracta vel 
flexuosa. Rracteae pedunculi infra racemum imbricantes; 
bracteae flores subtendenles glumaceae, patentes, pedicel- 
lum cum ovario exccdenles. Flores aurei, distichi. Sepala 
laleralia ovata, oblusa vel subacuta, carnosa, trinervia. 
Sepalum dorsale anguste ellipticum. Petala cuneato-fla- 
bellata vel subrhomboidea, apice rotundata, obtusa. La- 
. bellum valde carnosum, panduratum, basi valde concavum 
vel subsaccatum. Columna generis. 
Epiphytic herb up to 24 cm. high when measured from 
• Ihe base of the pseudobulb to the tip of the raceme. Roots 
^ rather coarse, whitish, smooth. Pseudobulbs about 1.5 cm. 
long, obpyriform, deeply wrinkled longitudinally when dry, 
5 mm. in diameter near the base, monophyllous. Leaf 
6-12 cm. long, up to 11 mm. wide, narrowly oblong-lanceo¬ 
late, with a conspicuous raised median nerve, marginate, 
obtuse with a distinct mucro, narrowed toward the base into 
a slender petiole. Petiole 2-3 cm. long. Peduncle with the 
raceme up to 23 cm. long, naked to the base of the raceme 
where it is provided with several closely imbricating scarious 
bracts. Raceme 6-9 cm. long, about 1.5 cm. across, bearing 
from ten to twenty flowers, rarely more. Flowers dis¬ 
tichous, yellow, about 4 mm. apart, rather fleshy, opening in 
succession. Bracts of the raceme about 3 mm. long, ovate, 
j * glumaceous, exceeding the pedicellate ovary. Lateral 
sepals spreading, 4 mm. long, 2.75 mm. wide below the 
middle, ovate, obtuse or subacute, lightly carinate along 
the middle on the outer surface, 3-nerved. Dorsal sepal 
4.75 mm. long, 2 mm. wide, narrowly elliptical, obtuse, 
3-nerved. Petals 4 mm. long, 4 mm. wide above the middle, 
flabelliform, rounded at the tip, 3-nerved, with the lateral 
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