Z

                  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.

• zacaen'sis: of or from the area of Zaca Lake in Santa Barbara Co. This taxon was named by Alice Eastwood from a collection made there (ref. Arctostaphylos glandulosa ssp. zacaensis)
• zaleuc'us: very white
• Zannichel'lia: after Gian G. Zannichelli (1662-1729), a Venetian botanist, physician and pharmacist (ref. genus Zannichellia)
• Zantedesch'ia: there is a great deal of confusion surrounding the person for whom this genus is named. Many internet sources like PlantzAfrica, FloralArtMall, University of Vermont, Pacific Bulb Society, Whatcom Horticultural Society, University of Florida, Cornell University, and so on, report that it honors Dr. Giovanni Zantedeschi (1773-1846), an Italian physician and botanist from Verona, and author of Descrizione dei funghi della provincia di Brescia (Description of the Fungi of the Province of Brescia). Other internet sources and published references including my Sicilian friend Umberto Quattrocchi, Philip Munz's Flora of Southern California and Stearn's Dictionary of Plant Names, list it as being named for Francesco Zantedeschi (1798-1873), Professor of Physics at Padua and a person who judging by his works Dell'influenza dei raggi solari rifratti dai vetri colorati sulla vegetazione delle piante e germinazione de' semi (1843) and Della elettricità degli stami e pistilli delle piante esplorata all'atto della fecondazione e di una nuova classificazione delle linfe o succhi Vegetabili (1853) conducted electrical and light experiments on plants. One website and the Jepson Manual list Francesco Zantedeschi with the birth and death dates of Giovanni Zantedeschi. David Hollombe has uncovered the fact that the earliest papers published by Francesco Zantedeschi date from 1829, whereas Giovanni Zantedeschi's published papers date from 1814-1829. This is possibly significant because the name Zantedeschia was given in 1826 by Kurt Polykarp Joachim Sprengel (1766-1833) at a time obviously before F. Zantedeschi had published any papers, although this is far from conclusive. Another clue I have uncovered that may be revealing is that Sprengel was the author in 1807 of An Introduction to Cryptogamous Plants (a group which would include the bryophytes and fungi), and as the above reference to G. Zantedeschi's work indicates, he also was interested in fungi, and this may have been a connection between them (ref. genus Zantedeschia)
• Zauschner'ia: named for Johann Baptista Josef Zauschner (1737-1799), a professor of medicine and botany at Prague (ref. former genus Zauschneria, now Epilobium)
• zebrin'us: striped
• Zelt'nera: Louis Zeltner (1938- ) and Nicole Zeltner (1934- ), Swiss botanists and biosystematists (ref. genus Zeltnera)
• zieg'leri: after Louis Bence Ziegler, Jr. (1905-1984) The following is quoted from the Sep. 6, 1984, San Jacinto Register: "Louis Ziegler, local botanist, paleo-botanist and former curator of the San Jacinto Museum, died Aug. 31 in Hemet Community Hospital. He was 79. Intensely interested in the flora of this region, Ziegler was concerned about preserving the unusual species found in the area. He worked with the late Dr. Philip A. Munz, Director Emeritus of Rancho Santa Ana Botanic Garden in Claremont until his [Munz's] death in 1974. Ziegler collected botanical material for Munz, bringing elusive specimens that showed new distribution ranges of plants indigenous to the San Jacinto and Santa Rosa mountains. His help was acknowledged by Munz in his 1974 book, A Flora of Southern California. A number of plants Ziegler discovered were named for him. Listed in Munz's book as having been discovered in the region is the tidy-tip (Layia ziegleri) [now named L. platyglossa], growing in the meadows of Garner Valley. Near Kenworthy, Ziegler found a peculiar form of chia (var. ziegleri now considered part of the taxon Salvia columbariae). Ziegler found the Kenworthy region to be the southernmost station for the box elder (Acer negundo var. californicum). Ziegler and his wife, Nell, moved to Diamond Valley from Sierra Madre in 1939. They have lived in San Jacinto since 1963. Beginning in 1958 as Curator of the museum, Ziegler continued in that capacity until 1981 when illness forced him to resign. He was especially proud of the museum's display of plant fossils he found in ancient lake sediment formations in the Poppet Flats area at the north edge of the Soboba Indian Reservation. Ziegler's discovery was recognized in a book on display at the museum, Pleistocene Soboba Flora of Southern California, written in 1966 by Daniel Axelrod, a paleobotanist from the University of California, Riverside. The display of bird shells in the museum was also collected by Ziegler. 'One of nature's most beautiful forms,' he said of the shells. It was Ziegler who formed the display of tracings of Indian pictographs and petroglyphs he took from originals in areas around the valley. 'Louis was very well versed in the history of the valley and studied in depth all the Indians of California, their culture, language and crafts. He influenced many young people and received letters to prove it,' Mrs. Ziegler said. By occupation, Ziegler was a photographer." (ref. Dietaria canescens var. ziegleri)
• Zigaden'us: derived from the Greek zugon, "yoke," and aden, "gland" (ref. genus Zigadenus)
• Zizan'ia: from the Greek zizanion, an ancient name for a wild weedy grain that typically grew among wheat crops (ref. genus Zizania)
• Ziz'iphus: one source says from the Persian name zizfum or zizafun, the reason for its application unknown, and another source says from zizouf, the Arabian name for Zizyphus lotus, a shrubby deciduous tree of the Mediterranean. Plinius apparently used the Latin name Zizyphus for the jujube-tree (ref. genus Ziziphus)
• zizyphoro'ides: like genus Ziziphus (ref. Pogogyne zizyphoroides)
• zona'le: having a band or girdle of some kind or color usually as a distinct characteristic, in the case of this example having a horseshoe-shaped band on the leaves and thus being called "horseshoe geranium" (ref. Pelargonium zonale)
• zona'tus: girdled
• Zos'tera: from the Greek zoster, meaning "a girdle," and referring to the ribbon-like leaves (ref. genus Zostera)
• zosterifor'mis: having the form or appearance of a girdle (ref. Potamogeton zosteriformis)
• Zoys'ia: after Karl von Zoys (1756-1800), an Austrian botanist and plant collector (ref. genus Zoysia)
• zschack'ei: after (Georg) Hermann Zschake (1867-1937) of Bernburg, Germany, where the type specimen was collected. (ref. Chenopodium berlandieri var. zschackei)
• Zygophyl'lum: from the Greek zygon, "yoke," and phyllon, "leaf," because of the paired leaflets (ref. genus Zygophyllum)