YLANG-YLANG— ZAUSCHNERIA 



535 



Ylang-ylang 



Canangium; C. odoratum 

 YoDOGAWA Azalea . Azalea yodogawa 

 Yokohama Velvetbean 



Stizolobium hassjoo 



YosHiNO Cherry . Prunus yedoensis 



Youngs Cypress, Youngs Sundrops, 



etc. See Cypress, Sundrops, etc. 



YUCCA Yucca 



The common name Yucca applies also 

 to species of the allied genera Hespero- 

 yucca and Samuela. 



aloifolia .... Spanish-dagger 



See also hort. var. list below. 



angustifolia Y. glauca 



arborescens . . . Joshua Yucca 



baccata Banana Y. 



concava . . Y. filamentosa concava 

 filamentosa . . . Common Yucca 

 — concava .... Spoonleaf Y. 



See also hort. var. list below. 



flaccida Weakleaf Y. 



See also hort. var. list below. 



glauca (angustifolia) Soapweed Y. 

 gloriosa (patens) . Moundlily Y. 

 — recurvifolia . . Y. recurvifolia 

 lineata . Striped Weakleaf Yucca 



Hort. var. of Y. flaccida. 



patens Y. gloriosa 



recurvifolia (gloriosa recurvifolia) 



CURVELEAF YuCCA 



treculeana . . . Spanish-bayonet 

 whipplei . Hesperoyucca whipplei 

 Hort. var. of Yucca : 



Striped Spanish-dagger ( Y. aloi- 

 folia tricolor] Cy) 

 Striped Weakleaf Y. ( F. flac- 

 cida lineata] Cy; lineata) 

 Variegated Common Y. ( Y. fila- 

 mentosa variegata] Cy) 



Yucca Yucca 



Banana Y Y. baccata 



Chaparral Y. 



Hesperoyucca whipplei 

 Common Y. . . Yucca filamentosa 

 CuRVELEAF Y. . Y. recurvifoUa 



Date Y Samuela 



Joshua Y. . . Yucca arborescens 

 Mexican Date Y. 



Samuela camerosana 



Small CAPiTALS=approved common names. 



Yucca, continued 



Moundlily Y. . . Yucca gloriosa 



Soapweed Y Y. glauca 



Spanish-bayonet . Y. treculeana 

 Spanish-dagger . . . Y. aloifolia 

 Spoonleaf Y. 



Y. filamentosa concava 

 Striped Spanish-dagger ( Y. aloi- 

 folia tricolor] Cy) 

 Striped Weakleaf Y. ( Y. flac- 

 cida lineata] Cy) 

 Texas Date Y. Samuela faxoniana 

 Variegated Common Y. ( Yucca fil- 

 amentosa variegata] Cy) 

 Weakleaf Y. . . Yucca flaccida 

 Yulan .... Magnolia conspicua 

 Yunnan Globeflower, Yunnan 

 Hemlock, etc. See Globe- 

 flower, Hemlock, etc. 



ZALUZIANSKYA 



capensis (Nycterinia capensis) 



Nightphlox 

 selaginoides (A^. selaginoides) 



ZAMIA 



floridana Coontie 



pumila St. Johns C. 



ZANTEDESCHIA Calla 



aethiopica (Calla aethiopica; Rich- 

 ardia aethiopica; R. africana) 



Common Calla 

 albomaculata (R. albomaculata) 



Spotted C. 



elliottiana (Calla elliottiana ; R. el- 



liottiana) . . . Golden Calla 



ZANTHORHIZA . . . Yellowroot 



apiifolia (Xanthorhiza apiifolia) 



Yellowroot 



ZANTHOXYLUM (XANTHOXY- 



LUM) Prickly-ash 



americanum Common P. 



clava-herculis . . Hercules-club 

 piperitum . Japanese Prickly-ash 

 Zanzibar Coffee, Zanzibar Water- 

 lily, etc. See Coffee, Water- 

 lily, etc. 

 ZAUSCHNERIA 



califomica Hummingbird-trumpet 



Abbreviations: (Ag) (Ar) (Cy) (t) see page I. 



