NEW OR NOTEWORTHY ORCHIDS 
Costa Rica, La Palma, A. M. Brenes (13) 343, October 
25, 1922. 1100 meters altitude. (Type in Herb. Ames No. 
31155.) 
Pleurothallis minutipetala A. & S. sp. nov. Herba 
caespitosa. Caules vaginis lepanthiformibus hispidis om- 
nino inclusi; vaginae in laminam ovatam in apice sunt 
dilatatae. Folium lanceolato-ellipticum, strictum. Racemi 
axillares, plures, folio multo breviores. Flores perparvi. 
Sepala lateralia carnosa, per dimidium inferius connata. 
Sepalum dorsale minus, ovato-lanceolatum. Petala minuta, 
irregulariter lacerato-fimbriata. Labellum spathulato-lin- 
guiforme, carina gnomoniformi praeditum. 
Plant densely caespitose, about 18 cm. high. Roots 
fibrous, flexuous, numerous, glabrous. Stems monophyllous, 
up to 11.5 cm. long, usually decumbent at base, entirely 
concealed by sheaths. Cauline sheaths 7-11, close, prom¬ 
inently hispid on the nerves, abruptly dilated at the summit 
into an ovate margined lamina which is long-hispid on the 
margins, the uppermost one larger, less spreading and en¬ 
closing the petiole and bases of the peduncles. Leaf elliptic- 
lanceolate, strict, shortly petioled; lamina 5-6.5 cm. long, 
8-12 mm. wide, minutely tridentate at the apex, cuneate at 
the base, coriaceous, mid-nerve more or less sulcate above 
and conspicuously carinate beneath; petiole indistinct, about 
5 mm. long or less, channeled. Inflorescences 2-5 slender 
racemes, apparently much shorter than the leaf (incomplete 
in our specimen). Floral bracts minute, infundibuliform, 
scarious, sublax (as many as 7 seen on one rachis). Flowers 
small, slightly spreading, short-pubescent on the outer sur¬ 
face. Lateral sepals fleshy, connate through the basal half, 
strongly concave, up to 5 mm. long, outer margins long- 
ciliate, inner margins short-ciliate, 3-nerved, minutely papil¬ 
lose within; free portions oblong-ovate, rounded and cucul- 
late at the apex, 2.4-3.2 mm. long, about 2.2 mm. wide when 
expanded. Dorsal sepal shorter than the laterals, ovate- 
lanceolate, about 4 mm. long, 2 mm. wide, membranaceous, 
sharply acute, 3-nerved, margins long-ciliate. Petals mi- 
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