Plantae cubenses Ekman. I 143 
Prov. Oriente prope Baracoa ad Bahia de Taco in fruticetis pineti, 
m. Dec. fruct.: n. 3709, inter Rio Yamaniguey et Campum Toa in solo 
rubro compacto, m. Febr. fruct.: Shafer n. 4180. 
Obs. Affinis S. sessihifolia (Britton) ramis junioribus breviter pubes- 
centibus angulatis, foliis orbicularibus 1,5 —3 cm. longis, pedicellis valde 
brevibus, lobis calycinis linearibus cr. 8 mm. longis, capsula oblongo-obovoidea 
5—6 mm. longa, (an etiam corolla?) ex descriptione recedit. 
Siemensia Urb. 
(genus nov.) 
Flores regulares hermaphroditi 5-meri. Calycis tubus anguste 
turbinatus; lobi in aestivatione aperti, lineares v. lanceolato-lineares 
elongati, tubum duplo et ultra superantes, persistentes. Corollae tubus 
in alabastro superne alato-5-angulus, angulis in lobulos minutos desi- 
nentibus, sub anthesi infundibuliformis ab apice fere usque ad basin 
sensim attenuatus, intus glaber; lobi tubo cr. 5-plo breviores, in aesti- 
vatione ad angulos anguste quincuncialiter induplicato-imbricati, trian- 
gulares. Stamina a corolla sublibera; filamenta basi ima brevissime 
coalita, linearia, inferne basi excepta brevissime patenti-pilosa, superne 
glabra; antherae non exsertae, supra basin affıxae, inclusae lineares 
apice obtusae; pollinis granula bene evoluta globulosa triporosa laevia. 
Ovarium inferum 2-loculare, cellulis in pariete interioribus secretum 
bruneo-nigrescens gerentibus; placenta naviculiformis oblonga extrin- 
secus plana nuda, dorso convexa, septo angustissime longitrorsum ad- 
nata, sed apice et basi libera; ovula numerosa ad placentae marginem 
et dorsum pluriseriatim affıxa, superiora adscendentia, intermedia sub- 
horizontalia, inferiora descendentia. Stylus glaber integer, superne 
biangulus, ad apicem angulorum versus stigmatosus. Capsulae obo- 
vatae sublignescentes, primo septicide, deinde plus minus profunde 
loeulicide dehiscentes, columellam nullam relinquentes. Semina in 
foveolis sessilia parva exappendiculata exalata ovalia, suborbicularia v. 
triangularia convexiuscula reticulata brunescentia.. Embryo minutus; 
cotyledones breviter ovatae planae, radicula parum compressa 11/,-plo 
breviores. — Frutex cubensis glaber. Stipulae interpetiolares e basi 
triangulari subulatae, intra petiolos brevissime v. vix conjunctae, margine 
integrae. Folia opposita petiolata ovata breviter acuminata, in sicco 
membranacea v. tenuiter chartacea, maculis purpureis parvis notata, 
nervis lateralibus utringue plerumque binis. Inflorescentiae termi- 
nales, lateralibus 1- v. plerumque 3-floris hine illine adjectis, corym- 
bosae pauciflorae; bracteae lineares v. lanceolato-lineares persistentes; 
pedicelli fructiferi recurvi. Flores magni. Capsulae non angulatae, 
purpureo-maculatae. : 
