<i>DE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS </i> VII: FOUR NEW SPECIES AND TWO NATURAL HYBRIDS

Four new species, <i>Macrocarpaea dies-viridis</i> (Ecuador), <i>M. luctans</i> (Ecuador, Peru), <i>M. lucubrans</i> (Panama), and <i>M. opulenta</i> (Ecuador), and two natural hybrids, <i>M. </i> × <i>acuminata</i> (Costa Rica) and <i>M. </i> × <i>mattii</i> (Ecuador), are described. <i>Macrocarpaea</i> × <i>acuminata</i> Weaver (pro sp.) is recognized as a natural hybrid between <i>M. subcaudata</i> and <i>M. valerii</i>, rather than as a distinct species, and <i>M. </i> × <i>mattii</i> is described here as a natural hybrid between <i>M. noctiluca</i> and <i>M. subsessilis</i>. The average number of seeds per capsule of <i>M. dies-viridis</i> is reported. With 10,400–11,000 seeds per capsule, the is first report in the genus.