(在)少,新嫩枝intravaginal或extravaginalintravaginal,pseudointravaginal但是具退化或不发育下部叶片和身体虚弱prophyl。
new shoots intravaginal or extravaginal, rarely (in China) pseudointravaginal, intravaginal but with reduced or rudimentary lower leaf blades and weakly differentiated prophyl.