into a suborbicular concave, shortly bidentate lamina 
which is about 11.2—11.8 mm. long to the tip of a lobe 
in natural position and 10.4 mm. wide, about 10-nerved. 
Petals dimidiate, very obliquely semiovate, abruptly long- 
unguiculate ; lamina about 8.8 mm. long and 4 mm. wide, 
broadly obtuse at the apex, rounded at the base which 
terminates next to the claw in a circinate subacute horn- 
like or bilobed apex; claw linear but gradually dilated 
above, about 3.5 mm. long, attached to the upper part 
of the column. Lip very small, sessile, adnate to the 
middle of the column, semisigmoid in profile, about 4. 2— 
4.5 mm. long, deeply concave below, erect and parallel 
to the column above, at the base with a prominent por- 
rect bilobed cucullate callus that extends on the disc as 
two short parallel keels; lamina conduplicate, when forci- 
bly expanded subquadrate-obovate, indistinctly lobulate 
or apiculate at the broad apex. Column stout, dilated 
above, about 3.5—4.5 mm. long. 
This species is allied to Ponthiteva maculata Lindl., 
but has dissimilar lateral sepals and petals. 
Hvanuco: Cani, 7 miles Northeast of Mito, at about 2600 meters 
altitude, ‘“‘decayed leaves of dense stream-wood floor, flowers white, 
the upper parts brown, the lower green-veined; inner part with 2 
green spots and pink-tipped’’, April 16-26, 1923, J. Francis Macbride 
3395 (Typrin Herb. Field Mus. No. 534465; Dupticate tryprin Herb. 
Ames No. 58709). 
Spiranthes curvicalcarata C. Schweinfurth sp. nov. 
Herba terrestris. Radices fasciculatae, crassae, lanu- 
ginosae. Folia basalia, rosulata, petiolata; lamina ellip- 
tico-ovata, acuta, basi late cuneata. Scapus infra glaber, 
supra valde pilosus, vaginis pluribus longissime acumin- 
atis ornatus. Racemus laxius multiflorus. Flores grandes, 
extus glanduloso-pubescentes. Sepalum dorsale anguste 
oblanceolato-oblongum. Sepala lateralia basi in calcar 
ellipsoideum apice hamatum connata, parte libera arcuato- 
[ 227 | 
