146 Is. URBAN 
Obs. I. Portlandia affınis placentis crassiuscule linearibus cireumeirca 
ovuligeris, capsulis loculicide dehiscentibus, seminibus brevissime stipitatis, 
basi arilloso-appendiculatis, stipulis intra petiolos vix connatis discrepat. 
Obs. II. Quod genus in honorem ill. professoris WALTER NERNsT, olim 
in universitate Berolinensi physicen docentis, nunc praesidis instituti physico- 
techniei germanici et de scientia et de arte technica meritissimi, nominavi. 
Nernstia mexieana (Zucc. et Mart.) Urb. (comb. nov.). — Üou- 
tarea mexicana Zuce. et Mart.! ex P. DC. Prodr. IV (1830) p. 350. — 
Portlandia mexicana Hemsl. Diagn. Pl. mex. (1879) p. 31; Standley in 
North Amer. Flora 32.1 (1918) p. 13. 
Mexico prope Tolima: Karwinski, prope San Toro-puente de Dios 
et prope Las Adjuntas ad Rio Moctezuma, m. Jan., Oct. fruct.: C. Ehren- 
berg n.998 (Yerba de San Pedro Mexic., contra stomachum corruptum 
adhibita), in prov. San Luis Potosi ad Minas de San Rafael, m. Majo 
flor.: Purpus n. 5205. 
Coutaportla Urb. 
(genus nov.) 
Flores regulares hermaphroditi 4-meri. Calyeis tubus obovatus 
compressus, supra ovarium non productus; lobi in aestivatione aperti, 
lanceolati, margine supra basin parce glanduloso-denticulati, persistentes. 
Corollae tubus infundibuliformis, inferne ceylindraceus, intus glaber; 
lobi in aestivatione verisim. anguste imbricati orbiculari-triangulares tubo 
fere 3-plo breviores. Filamenta basi ima corollae adnata, inter sese 
plane libera, inferne pilosula; antherae non exsertae, lineares apice 
obtusae, dorso supra basin affıxae; pollinis granula aquae immersa 
globulosa laevia 3-porosa. Ovarium septo contrarie compressum, 2-locu- 
lare; placenta septo medio peltatim (fere punctiformiter ad medium) ad- 
nata, a latere compresso subquadrata, brevis; ovula in quoque loculo 4 
suboblique ovata, cum basi ad placentae latera binatim affıxa, 2 ascen- 
dentia, 2 descendentia. Stylus glaber integer, striis binis ab apice usque 
ad medium decurrentibus stigmatosis notatus. Capsulae ovali-orbicu- 
lares compressae bisulcatae durae, septicide dehiscentes, valvis plus minus 
profunde bifidis, columellam nullam relinquentibus. Semina-sessilia satis 
ampla exappendiculata exalata ovata plana minutissime reticulata bru- 
nescentia. Embryo non visus. — Frutex mexicanus glaber, ramis 
ad apicem resina obductis. Stipulae interpetiolares triangulares, intra 
petiolos vix conjunctae, margine denticulatae. Folia opposita, breviter 
petiolata, ovalia v. elliptica, coriacea, non maculata, nervis lateralibus obso- 
letis v. nullis. Inflorescentiae terminales corymbosae pauciflorae, pedi- 
cellis fructiferis erectis; bracteae lineari-subulatae. Flores satis magni. 
Obs. I. Portlandia L. floribus 5 — 7-meris, calycis tubo non compresso, 
lobis integerrimis, staminibus inter sese basi brevissime coalitis, placentis 
