Is the Loasa genus or the Ferula genus more useful to humans?
Ferula
Title: Loasa
Passage: Loasa is a genus of ornamental plants in the family Loasaceae.  These plants are usually prickly herbs, or subshrubs, and they are native to tropical America.
Title: Ferula
Passage: Ferula (from Latin "ferula", "rod") is a genus of about 170 species of flowering plants in the carrot family, native to the Mediterranean region east to central Asia, mostly growing in arid climates.  They are herbaceous perennial plants growing to 1–4 m tall, with stout, hollow, somewhat succulent stems.  The leaves are tripinnate or even more finely divided, with a stout basal sheath clasping the stem.  The flowers are usually yellow, rarely white, produced in large umbels.  Many plants of this genus, especially "F. communis" are referred to as "giant fennel," although they are not fennel in the strict sense.
Title: Muskroot
Passage: Sumbul, also called sumbal or muskroot, is a drug occasionally employed in European medical practice.  It consists of the root of "Ferula moschata ", known formerly by the synonym "Ferula sumbul" , a tall umbelliferous plant of the 'Giant Fennel' genus "Ferula" found primarily in the north of Bokhara in present-day Uzbekistan, although its range apparently extends into Southeastern Siberia : beyond the Amur river.
Loasa Ferula