Costus. 423 



pubescentia ad i 5 cm longa et quadrante superiore ad 10 cm lata; flores e rosula 

 plurimi sessiles bractea tenerrima comitati ; ovarium sicc. angulatum subtomentosum 

 \ cm longum; calyx prope basin puberulus elongato-clavatus acuminatus unilateraliter 

 fissus ad 4,5 cm longus; corollae ad 1 8 cm longae tubus calycem duplo superans, lobi 

 lanceolati; labellum maximum coroUam superans ochraceum; stamen lineari-lanceolatum. 



Mozambik: Moramballa-Berge bei 60Ö — 950 m ü. M. (Kirk u. Waller). — 

 Njassaland: Ohne bestimmten Standort (Buchanan n. 532 u. 668); Shire-Hochland 

 auf dem Mt. Sotschi (Scott-Elliot n. 8521). — Kondeland: Kivirathal, am Kasi- 

 mulohügel im Buschwald bei 600 m ü. M. (Goetze n. 1488, blühend im November 

 1899); zwischen dem Tanganyika-See u. dem Nyassa-See (Johnston n. 26, rubato 

 der Eingeborenen). 



Nota. Re vera haec species cum priore affinitate arcte connata tarnen ope florum maxi- 

 morum duplo et ultra eos prioris superantium bene facileque distinguitur. Area geographica 

 C. 7nacranthi magis austrum versus spectat. 



89. C. pistiifolius K. Schum. in Engler's Bot. Jahrb. XVIl. (1893) 423. — 

 Cadalvena pistiifolia Bak. in Th. Dyer, Fl. trop. Afr. VII. (1898) 297. — Folia late 

 spathulata apice truncata marginata basi cuneata rosulata at basi invicem sese haud 

 obtegentia inferne pulvinato-incrassata supra glabra subtus appresse puberula sicc. herbacea 

 cuprea. Flores plures bracteis lanceolatis acuminatis membranaceis instructi; ovarium 

 glabrum 8 mm longum; calyx tubulosus obHque fissus 2 — 2,5 cm longus; corollae lobi 

 lanceolati, tubus 3,5 cm longus manifeste brevior; labellum corollam paulo superans, 

 anthera 5 mm longa. 



Angola: Bei Malange im Walde (Mechow n. 168, blühend im JuU, n. 315, blühend 

 im Oktober 1879). 



Nota. Indole foliorum a typo bene recedit cui propter magnitudinem florum proxime affinis. 



90. C. pumilus 0. G. Peters, in Fl. brasil. III. 3. (1890) 58. — Breviter caules- 

 cens. Folia rosulata infima parva sessilia ovata obtusa supra glabra subtus villosa, 

 sequentia elliptica vel suborbicularia vel oblonga acutiuscula basi rotundata vel angustata 

 dense villosa, ceterum utrinque at subtus densius pubescentia moUia ciliolata 5 — 15 cm 

 longa et 2 — 8 cm lata. Flores haud perfecte evoluti pauci; bracteae membranaceae 

 lanceolatae acuminatae; ovarium villosum; calyx 2,5 cm longus tridentatus, dentes acu- 

 minati; corolla extus dense sericea. 



Brasilien: Zwischen dem Paranahyba u. dem Staate Goyaz (Burchell n. 6365); 

 in demselben Staate (Glaziou n. 22181). 



Nota. Species peculiaris infeliciter imperfecte tantum nota. 



91. C. acaulis Sp. Moore in Trans. Linn. Soc. 2. ser. IV. (1895) 480. — Acaulis, 

 basi vaginis ovatis pubescentibus munitus. FoHa 4 in crucem disposita rosulata sessiha 

 oblonga vel subelliptica obtusa vel acuta membranacea supra glabra (ex auctore interdum 

 pilosa) subtus praesertim in nervo mediano et margine puberula ad 1 8 cm longa et 

 7,5 cm lata; folia summa 1 vel 2 duplo et ultra minora. Spica pauciflora; bracteae 

 lanceolatae acutae et bracteola bifida ciHolatae; calyx 2,5 cm longus, lobi acuminati 

 puberuh ad 9 mm longi; corollae tubus 1,5 cm longus, lobi tenerrimi 3,5 cm metientes; 

 labellum luteum 7 cm longum integrum undulatum; stamen 2,5 cm longum; connectivi 

 appendicula linearis oblonga acuta; thecae acuminatae. 



Brasilien: Staat Matto Grosso in sandigen Gebüschen des Campo Cerrado (Spencer 

 Moore n. 679, blühend im November). 



Nota. Habitu haec species et foliis ciliolatis et colore et indole florum ad illas generis 

 africanas accedit, quas olim in genus Cadalvenae auctores coUigaverunt. 



Subgen. V. Paracostus K. Schum. in Engler's Bot. Jahrb. XXVII. (1899) 343. 



Herbae repentes prostratae, caules oligo-interdum monophylli et basi vaginati. Folia 

 elliptica subcarnosa, Hgula brevis. Flores nunc caulem terminantes spicam abbreviatam 

 vagina folii solitaria inclusam vel subcapitatam a caule foliigero discretam e rhizomate 

 oriundam referentes. 



