449 



508. Columnea (Eucolumnea) oblanceolata, Sprague [Gesner- 

 aceae] ; species distincta foliis majusculis oblanceolatis, calyce 

 parvo extra tantum dense villoso, lobis subpectinato-dentatis. 



Hamuli exstantes circiter 13 cm. longi, obtuse tetragoni, hispidi, 

 inferae 4 mm. diametro. Folia anguste oblanceolata, in basin a 

 triente superiore sensim attenuate, apice breviter acuminata, 

 interdum subabrupte, 6-5-11 cm. longa, 1-5-2-5 cm. lata, supra 

 pub^rula vel glabrescentia, subtus strigoso-pubescentia, praesertim 

 in nervis, exsiccando papyracea ; nervi laterales utrinque 4-5, 

 supra inconspicui, subtus satis prominentes ; petioli 1-2 cm. longi, 

 hispidi. Flores verisimiliter in axillis solitarii, pedicellis 2 cm. 

 longis patule villosis. Calyx extra praesertim inferne dense 

 villosus, villis aliis glanduloso-capitatis aliis eglandulosis, intra 

 glaber ; tubus 1*5-2 mm. longus ; lobi anguste lanceolati, acumin- 

 ati, 8-10 mm. longi, 2-3 mm. lati dentibus exclusis, subpec- 

 tinato dentati, dentibus utrinque 4-5, longioribus circiter 1*25 mm. 

 longis. Corolla tota 5*5-6 cm. longa, extra longuiscule glanduloso- 

 pubescens, intra minutissime pubescens, lobo antico anguste lan- 

 ce flato obtusiusculo vix 1*5 cm longo 5*5 mm. lato 3*6-3-7 cm. 

 supra basin inserto, lobis lateralibus cum galea 1*2 cm. connatis 

 superne triangularibus, margine superiore 7-9 mm. longo, galea 

 propria transverse elliptica (explanata) 1-1*2 cm. longa fere 

 1*8 cm. lata truncato-rotundata levissime emarginata. Filamenta 

 inferne 10-11 mm. in vaginam anticam corollae in medio circiter 

 6 mm. inferne adnatam connata, partibus liberis circiter 4*3 cm. 

 longis dense minute patenter pilosis ; antherae 3'5 mm. longae. 

 Olandula disci Ulrica, postica, 1-5-1-75 mm. longa, leviter retusa 

 vel bifida. Ovarium ovoideum, 3-3-5 mm longum. dense vil- 

 losum ; stylus vix ultra 5 cm. longus, patule pilosus. 



Costa Rica. Hiibsch. 



509. Arthraxon Meeboldii, Stop/ [Gramineae-Andropogoneae] ; 



affinis A. lanceolate, Hochst., sed annua, spiculis longioribus, 

 gluma inferiore spiculae sessilis apicem versus pulcherrime 

 argenteo-plumosa. 



Gramen annumn. Culmi 2-3 e basi breviter prostrata ascen- 

 dentes, 15-20 cm. alti, graciles, glaln iiimi, siinplices, (5-8- nodi, 

 internodiis sursuin accrescentibus, summo 5- 7 cm. longo vix vel 

 breviter exserto. Foliorum vaginae infimae a culmo solutae, 

 caeterae arctae vel superiores plus minusve tumidae, praeter 

 basin ad nodum barbulatam glabrae vel superne pilosae ; ligulae 

 brevissimae, hyalinae ; laminae ovatae vel ovatodanceolatae, 

 tenniter acuminatae, basi cordatae, amplexicaules, 2-3*5 cm. longae, 



1_1 -o^ r>™ w„„ „,.-k+,.„ /-^,,„.-.^-« *t! nr>a+*\ »«»inlis basi subbulbosi> 



m 



nervosae. Race mi in 



setulis basi subbulbosis 

 itae, tenuissime multi- 



3-4 



unus pedunculo rfabro ad 8 mm. longo saffultus ; articuli anguste 



linea 



-— *v*vi VylAHO BUU rl U1UU fid—A**J x±m.»jj* *~"0 — 7 *. . 



fflabri ; pedicelli similes, sed 3 mm. longi et fere duplo latiores. 

 Spiculae sessiles anguste lineari-lanceolatae, longe acuminatae, 

 9*5-10 mm. longae, 1 mm. latae, callo vix ullo ; gluma inferior 



coriaceo-chartacea, pallida, acumine pnrpurascente binuo dentiDus 

 angustissimis, carinis a basi ad vel ultra | eleganter muncatis 



