Styles short;stigmas capitate.Utricles irregularly circumscissile (bursting).

花柱短柱头头状规则的周裂的(爆)。

Utricles convex on both sides; rostra nearly equal to length of kernel; seed free from pericarp; leaves and bracts acicular to spinulose at apex.

凸的面；喙等于珠心的长度；种子离生的皮；对具微刺的在先端针状的叶和苞片。