NEW OR NOTEWORTHY ORCHIDS 
Maxillaria angustisegmenta A. & S. sp. nov. Herba 
caespitosa, crassa. Pseudobulbi cylindracei vel orbiculares, 
plus minusve valde complanati, monophylli. Folium longe 
petiolatum; lamina oblonga vel ligulata. Inflorescentiae 
basales, uniflorae; pedunculi vaginis laxis obtecti. Flos 
grandis. Sepala anguste oblonga; lateralia obliqua, mentum 
formantia. Petala lineari-lanceolata, leviter falcata. Label- 
lum prope apicem trilobatum; lobus inlermedius comparate 
parvus, suborbicularis, recurvus. 
Plant stout, apparently caespitose. Roots fibrous, flex- 
uous, glabrous. Pseudobulbs cylindric or disc-shaped, 2.5-5 
cm. long, monophyllous, enveloped and much surpassed by 
nervose sheaths which waste into fibers, more or less com- 
planate and rugose or longitudinally striate in the dried 
specimen. Leaf long-petioled; lamina oblong, 19.4-41.2 cm. 
long, 2.5-5.3 cm. wide, acute with a rounded tip, cuneate- 
narrowed at base, subcoriaceous, mid-nerve prominently 
sulcate on the upper surface and carinate beneath, some¬ 
times conspicuously glaucous on the under surface, margins 
more or less revolute in the dried specimen; petiole deeply 
channeled or conduplicate, 5.1-13 cm. long, up to 6 mm. in 
diameter. Peduncles 1-flowered, issuing from the base of 
the pseudobulb, about 8.5-15.5 cm. long, concealed wholly 
or mostly by 7-8 loose ancipitous sheaths which are smaller 
and imbricating at base. Pedicellate ovary slender, about 
2.6 cm. long, entirely enclosed and more or less surpassed 
by a bract. Floral bract concave, lanceolate, nervose, 2.9- 
4.4 cm. long. Flower large. Lateral sepals narrowly ob¬ 
long or lanceolate-oblong, about 4.1-4.9 cm. long, 7.5-9 
mm. wide near the base, abruptly acute, somewhat oblique, 
nervose. Dorsal sepal very similar, concave near the base. 
Petals linear-lanceolate oblique, slightly falcate, 3.85-4.6 
cm. long, up to 6 mm. wide, subacute. Labellum erect and 
parallel to the column in natural position with the sides 
tubular-involute and the middle lobe recurved; lamina when 
expanded elliptic in outline, about 2.2-2.55 cm. long, sharply 
3-lobed beyond the middle; basal portion elliptic-obovate, 
16.1-18 mm. long, 12-14 mm. wide near the apex, terminat- 
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