1212 



Xylopia Ungeri — Zingiber odoriferuw. 



Xylopia Ungeri Engeln* 

 II, 104. 



— Wilwerthii var. cuneata 

 De Wild* 425. 



Xylophacos amphioxus 

 (A. Gray) Rydb. 537. 



— Newberryi (A. Gray) 

 Rydb. 537. 



— Parryi (A. Gray) Rydb. 

 537. 



— Purshii (Dougl.) Rydb. 

 537. 



— pygmaeus (Nutt) Rydb. 

 53*7. 



— uintensis (, Tones) Rydb. 

 537. 



— vespertinus (Sheld.) 

 Rydb. 537. 



Xylopleurum 553. 

 Xylopodium ochroleucum 



'267. 

 XylorrhizaBrandegeilfo/d- 



berg* 474. 

 Xyridaceae II, 405. 

 Xyris II, 405. 



— arenicola Small II, 

 405. 



— bulbosa Kunth II, 405. 



— caroliniana 814. 



— flexuosa Mühlbg. II, 

 405. 



— flexuosa Chapm. II, 

 405. 



— montana 814. 



— torta Kunth II, 405. 



Yoshinagaia Quercus P. 



Jfemt. 118. 

 Yucca II, 378, 502. — HI, 



757, 772. — P. 311. 



— aloifolia L. II, 42, 43. 

 — in, 319. 



— aloifolia X flexilis II, 

 378. 



— australis 829. — II, 

 377. — III, 302. 



— columbiana II, 378. 



— elephantipes III, 729. 

 >— Faxoniana Sargent* 



393. 



Yucca filamentosa L. III, 

 121, 319. 



— gloriosa III, 319. 



— guateraalensis Baker 

 833. — II, 373. 



— macrocarpa Sargent 

 393. 



— Titanus II, 378. 



— Treculiana III, 319. 



— Whipple! III, 319. 



Zalacca conferta III, 739. 

 Zaluzania asperrima P. 



249, 327. 

 Zamia II, 9, 10, 163, 277 



— integrifolia II, 9. 



— muricata II, 9. 



— Skinneri II, 9. 



— Wallis! II, 10. 

 Zamioculcas Boivinii 



Decrn. var. angustifolio- 

 latus De Wild* 374. 



— zamiifolia (Lodd) Engl 

 374. 



Zamiopsis brevipennis P. 



Richter* II, 153. 

 Zamites II, 116, 174. 

 Zannichellia palustris L. 



885, 887. — III, 329, 



459, 480. 

 Zanonia III, 314. 

 Zantedeschia aethiopica 



II, 293. 

 Zanthoxylon nitens 864. 



— schinifolium P. 280. 

 Zea III, 162, 731. 



— Mays L. 342, 826. — 

 II, 85, 369, 370. — III, 

 11, 61, 122, 166, 183, 

 716, 723, 728. — P. 155, 

 — II, 205, 211. 



Zebrina III, 120. 

 Zelkowa 763. 



— Ungeri II, 132, 135. 

 Zephyra III, 289. 

 Zephyranthes II, 348. 



— Anderson ii Baker var. 

 rosea Holmb.* 368. 



— gracilifolia Baker var. 

 Bijou Holmb* 368. 



Zephyranthes gracilifolia 

 var. Bulula Holmb* 368. 



— jujuyensis Holmberg* 

 368, 844. — II, 348. " 



— — var. volcanica Holm- 

 berg* 368. 



— porphyrospila Holmb* 

 844. — II, 348. 



— timida Holmb* 368. 

 Zeuxine Erimae Schltr* 



410. 



— montana Schltr* 410. 



— rupestris Bidley* 410. 



— torricallensis Schltr* 

 410. 



Zexmenia 470, 763, 831. 

 — II, 246", 451. 



— ceanothifolia Seh. Bip. 

 var. conferta (Gray) 

 Jones 475. 



— foliosa (Rusby) W. W. 

 Jones* 474. 



— gracilis W. W. Jones* 

 474. 



— hispida var. ramo- 

 sissima II, 445. 



— Palmeri Greenman* 474. 



— Pittieri Greenman" 474. 



— squarrosa Greenman* 

 474. 



— xylopoda W. W. Jones* 

 475. 



Zignoella Ebuli Malbr. et 

 Brun. 106. 



— palmicola P. Henn* 

 339. 



— superficialis Feltg* 

 339. 



Zignoinapygmaea(Ä"arsi.) 



Sacc. 129. 

 Zingiber acuminatum Val. 



II, 249, 406. 



— inflexum Bl II, 249, 

 406. 



— macradenia K- Schitm. 

 II, 249, 406 



— neglectum Val II, 

 249, 406. 



— odoriferum Bl 11,249, 

 406. 



