-■ 83 - 



Dendrobium (sect. Platycauloii) se p te mco's t u 1 a t u m JJ.S. d. sp. 



Caules appr.oximati, valde compressi, e basi teniii apiceni versus sensim 

 dilatati, apice anj^ustati, nitidi, diliite flavoviridt'S, ad nodos leviter constricti, 

 c. 9— 12nodes, initio vaginis tiibulosis compressis tecti, superne c. 3— 7folii, 

 c. 10—26.5 cm. loii;4i, superne c. 1.5—2,6 cm. lati, interiiodiis ad c. 2.2— 3 

 cm. longis, Folia pateutia, basi semitorta, ovato- ad oblongo-lanceolata, 

 recurvuia, apice canaliculata, plus minusve oblique acuta, subundulata, costa 

 média supra sulcata subtus tcnuiter promiiiente, papyracea, nitidule viridia, 

 c 5 - 11.5 cm. 'onga, 1.7 — 3.4 cm. lala; vaginae tubulosae, valde lateraliter 

 compressae, autice rumpentes, interiiodiis breviores. Inflorescentiae e iiodis 

 superioribus, brèves; pauciflorae, peduiiculo tenui, pailide viridi, c. 1—2.1 

 cm. longo, vaginulis raris donato, rachide tenui, flexuosa, c. 0.6—1.7 cm. 

 loiiga. Bracteae pedicello adpressae, triangulae, acutae, coiicavae, pallidae, 

 c. 0.275 cm. longae. Flores c. 2-4, médiocres, odorem aromaticum exha- 

 lantes, pailide ochrascentes, c. 1.7 cm. lati, 2.25-2.7 cm. longi, sepalis 

 basi brevissime connatis dorso nitidis. Sepalum dorsale incurvulum, ovatum, 

 acutiusculum vel acutuin, apiculalum, leviter concavum, nervis 3 inlus pro- 

 minulis dorso sulcatis, intus vix nitidulum, c. 1.4 — 1.8 cm. longum, c. 0.7 

 —0.85 cm. latum. Sepala lateralia cjm pede gynostemii mentumconspicuum 

 cum ovario angulum subrectum faci'ins subrectum conicum apice a dorso 

 compressum obtusum bene 1 — 1.25 cm. longum formantia, porrecta, diver- 

 gentia, obtusangule triangula, acuta, obtusangule concava, costa média 

 dorso incrassata, intus nitidula, c. 1.35-1.7 cm., margine antico 2 — 2.2 

 cm. longa, basi 1.4—1.6 cm. lata. Petala porrecta, incurva, e basi ungui- 

 culato-contracta oblique ovalia vel ovata, brevissime obtusangule suba- 

 cuminata, pailide flavesceniia, tota c. 1.4—1.6 cm. longa, ungue 0.34—0.4 

 cm. longo, 0.67 — 0.8 cm. lata. Labellum erectum, pedi gynostemii adpres- 

 sum. unguiculatum, 3lobum, valde concavum, subtus supra basin 

 leviter ventricosum, apice valde recurvum, inter unguem et laminam 

 Vformiter incrassatum, costulis c. 7 iongitudinalibus approximatis parallelis 

 rectis apicem non attingentibus in lamina, intus in lobo intermedio margine 

 excepto dense verruculosum, fascia mediana lata citrina medio costis 

 virescentibus exceptis pallidiore et leviter sordide pailide purpurascenti- 

 suffusum, fere usque in médium labelli nitide ochraceum, subtus nitidulum 

 medio nitidum, explanatum ex ungue quadrangulo ambitu late cuneato- 

 rhombeum, c. 2—2.2 cm. longum, ad lobos latérales fere 1.8-2 2 cm. latum, 

 ungue 0.4 — 0.5 cm. longo, medio 0.3—0.4 cm. lato ; lobi latérales erecti, 

 concavi, late rectangule trianguli, apice in lobulum minutum obtusum 

 producti, margine antico suberosuli, albi, pailide roseo-nervosi ; lobus 

 intermedius recurvus, sinibus obtusissimis a lobis lateralibus sejunctus, 

 brevissimus, latus, transverse rotundato-subquadrangulus, obtusissimus, un- 

 dulatus, erosus, flavescenti-albus, c. 0.35 — 0.375 cm. longus, 0.9 — 1 cm latus. 

 Gynostemium cum ovario angulum obtusum faciens, brève, quam ovarium 

 crassius, album, vix purpureo-suffusum, c. 0.35— 0.4 cm. longum, clinandrio 

 transverso, margine erosulo, filamento elongato-subulato, auriculis latis, 

 obtusissimis, apice vix productis. Anthera cuculiata, apice obtusangule 



