Y

                   In the following names, the stressed vowel is the one preceding the stress mark. It is not always
                  easy to ascertain where such stress should be placed, especially in the case of epithets derived
                  from personal names. I have tried to follow the principle of maintaining the stress of the original
                  name as outlined in the Jepson Manual, and have abandoned it only when it was just too awkward.
                  In the case of some names, I have listed them twice, reflecting either some disagreement or conflict
                  in the rules of pronunciation, some uncertainty on my part as to the correct pronunciation, or simply
                  that sometimes there is no single correct pronunciation. In other instances, the way I record it is just
                  that which sounds right to my ear.

• Yab'ea: named after Yoshisada (Yoshitaba) Yabe (1876-1931), a Japanese botanist (ref. genus Yabea)
• yadon'ii: after Vernal Lee Yadon (1931- ), a former Director of the Museum of Natural History in Pacific Grove, Monterey County (ref. Erysimum menziesii ssp. yadonii, Horkelia yadonii, Piperia yadonii)
• yi'na: a Klamath Indian word for mountain (thanks to David Hollombe for this obscure tidbit) (ref. Downingia yina)
• yollabollien'sis: of or from the region of the Yolla Bolly Mts in northern California (ref. Lotus yollabolliensis)
• york'ii: after Dana Adrian York (1962- ), botanist of Death Valley National Park (ref. Boechera yorkii, Gilia yorkii)
• yosemita'na/yosemita'num: of or from the Yosemite area (ref. Madia yosemitana)
• yosemiten'se: same as previous entry (ref. Allium yosemitense)
• Yuc'ca: from the Carib name for manihot or cassava (a genus belonging to the Euphorbia and misapplied to these liliaceous evergreen shrubs or small trees with rosettes of sword-shaped leaves) (ref. genus Yucca)
• yu'mae: of or from Yuma, Arizona (ref. Camissonia claviformis ssp. yumae)