A new species of Listera from Nepal (Orchidaceae)

Affinis L. longicauli King & Pantling, a qua tamen differt magnitudine minore totius plantae, racemis brevioribus, labello angustiore lineari-lanceolato, sepalis lateralibus 3—4-plo. longiore ad apicem bifido. Herba terrestris, erecta, gracilis, 6—20 cm alta, radicibus carnosis fibrosis e rhizomate brevi; caulis glaber, 3.5—12.0 cm longus infra folia, 1.0—1.5 mm crassus, unica vagina ornatus ad 2—4 cm supra rhizoma, vagina ca 5 mm longa, ca 2 mm lata. Folia sessilia, ovatocordata, ad apicem acuta, 1.5—3.0 cm longa et lata, membranacea, pallide viridia infra, glabra, tenuiter 5—7-nervia. Racemi 3—8 cm longi, glandulari-puberuli, supportantes flores 4—12, distanter dispositos in axillis bractearum, flore infimo 1—2 cm supra folia. Bracteae florales ovato-acuminatae, glabrae, ovario stipitato breviores. Pedicelli 3—6 mm longi. Flores pallide virides, glabri, 1—2 cm longi. Sepala subaequalia, membranacea. Sepalum dorsale ovato-lanceolatum, erectum, 2.0—2.5 mm longum, ca 1.5 mm latum. Sepala lateralia ovato-lanceolata, subfalcata, paulum reflexa, 3—4 mm longa, 1.5—2.0 mm lata. Petala lineari-lanceolata, angustata, 2.5—2.75 mm longa, 0.8—1.0 mm lata. Labellum amplum, 3—4-plo. longior sepalis lateralibus, lineari-lanceolatum, latum in medio, fastigatum ad utrumque apicem, 3—5-nervium, 8—13 mm longum, 2.0— 2.5 mm latum, membranaceum; apice breviter bifido, lobis anguste obtusis, sinu brevissimo. Columella 2.5—3.0 mm longa, acute curvata ad apicem, rostello brevi, hebete; pollinis 2, pyriformibus. Ovarium ca 4 mm longum, tenuiter obconicum, glabrum. Capsula ca 1 cm longa.