從臺灣肺形草( Tripterospermum taiwanense taiwanense)中得到一種短暫肌肉鬆弛物(pulse muscle relaxing factor)，它的作用可引起小腸平滑肌短暫舒張，且具可逆性。 A rmscle relaxing factor was obtained from Tripterospermum taiwan-ense. The action of this substance was different from that of atropine and scopolamine. The muscle relaxation caused by this factor was found to be pulse and reversible.
