Sentence:  Stamineal <WSD>urceole</WSD> 10-15-toothed, with 5-10 of the teeth obtuse and sterile, and the 5 remaining ones alternate and monantherous. 
Meaning of the word marked with <WSD> tags:  A disc in the center of a flower, often resembling a thickening of the corolla, which holds the carpels.