Sentence:  The liquid filtered from the <WSD>Savanilla</WSD> sort and diluted with distilled water exhibits an intense violet colour, that from Peruvian rhatany a dingy brown ; the latter turns light red by alkalis. Thin sections of the Peruvian root assume a greyish hue ... 
Meaning of the word marked with <WSD> tags:  A Colombian variety of rhatany, formerly used medicinally; "Krameria lappacea" (formerly "Krameria triandra").