石渠寶笈初編(養心殿),上冊,頁669 &*故宮書畫錄(卷五),第三冊,頁154 &*故宮書畫圖錄,第三冊,頁139&*1.譚怡令,〈宋人桐實修翎〉,收入譚怡令編,《畫?珍禽》(臺北:國立故宮博物院,1988年十月初版),頁86。 &*梧桐枝頭結滿了桐子,枝上有白頭翁正俯首整理著羽毛,描繪逼真生動。桐葉漬染沉厚,潤綠可愛。右下角有「司印」半印。&*The painting depicts a brilliant green bird perched on a Wu-t'ung branch. The bird bends its head to preen its feathers. The forms are outlined in ink; the brushstrokes are sure, strong , and imbued with life. The colors are thickly applied. In the lower right corner of the painting is the half seal Ssu-yin of the Ming Imperial collection.