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。