adv.向外地；外向地；外倾地

Petals free or almost so, yellow to red or purplish red, subglobose-urceolate, S-shaped in longitudinal section, apically extrorsely vaulted curved, base concave, apex sometimes thickened. 花瓣离生或几乎如此，同数的雄蕊花瓣，着生于萼片，稍短于花瓣。

anthers 2-celled, extrorsely dehiscent by longitudinal slits, connective slightly protruded, exceeding apex of locule forming apiculate appendage. 花药2室，通过纵裂缝向外地开裂的，药隔稍突出，超过室先端形成具细尖的附属物。