696 ZANTHORHIZA 



Zanthorhiza L'Herit. Ranuncul. (2). r All. N. Am. Fls. 5-nierous. 



Zanthoxylum L. (Bff. incl. Fagara L.). Rutaceae (i). 20 temp. E. 

 As., N. Am. Several cult. orn. shrubs. Z. piperituin DC., the 

 Japan pepper, yields fr. used as a condiment. The bark of Z. fraxi- 

 neutn Willd. (prickly ash or toothache-tree) is used in Am. as a 

 remedy for toothache. Some yield good timber. 



Zapania Lam. = Lippia Houst. p.p. (Verben.). 



Zataria Boiss. Labiatae (vi). i Persia, Afghanistan. 



Zauschneria Presl. Onagraceae (2). i Calif., Mexico. Cult. orn. fl. 



Zea L. Gramineae (i). i sp., Zea Mays L., the maize or Indian corn, 

 apparently originally Mexican, now cult, in most trop. and subtrop. 

 regions. A tall annual grass, with term. <? infl. and ? infls. in the 

 axils of the foliage-1. $ spikelets in pairs, 2-flowered. The ? infl. 

 forms a 'cob' with long filamentous stigmas hanging out at the end 

 (fls. pollinated by wind). The cob is enveloped when young by large 

 spathe-1., and consists of combined spikes; each two rows of fls. 

 visible on its surface correspond to one spike of fls. The cult, forms 

 are 8-, 10-, 12-, or 24-rowed. Cf. Euchlaena, in which the spikes 

 are distinct and form a tuft. Each spike consists of one-flowered 

 spikelets. Fr. the familiar maize-seed, in which the structure of a 

 grass-fruit can easily be made out; the embryo occupies the white 

 portion near the pointed end. 



A most important cereal ; it is termed corn in the U.S., like wheat 

 in England, oats in Scotland. The grain is made into flour (Indian 

 meal) or cooked without grinding ; green corn (unripe cobs) forms a 

 favourite vegetable, the 1. are useful as fodder, the dry cobs as firing; 

 the spathes are used in paper-making, and so on. [See Harshberger's 

 monograph (botanical and economic) in Contrib. Bot. Lab. Univ. 

 Pennsylv. I. 1893.] 



Zebrina Schnitzl. Commelinaceae. 2 Mexico, Texas. Cult. orn. fol. 



Zedoary, Curcuma Zedoaria Rose. 



Zehneria Endl. = Melothria L. p.p. (Cucurb.). 



Zeia Lunell (Agropyron p.p-). Gramineae (12). 15 N. Am. 



Zelkova Spach. Ulmaceae. 4 N. temp. |^r. Timber valuable. 



Zenkerella Taub. Leguminosae (11. 2). i Cameroon.s. 



Zenkeria Trin. Gramineae (9). 2 India, Ceylon. 



Zenkerina Engl. Acanthaceae (i). i Cameroons. 



Zenkerophytum Engl. ex Diels. (Syrrheoiuma p.p.). Menispermaceae. 

 i W. Afr. 



Zenobia D. Don (Andromeda p.p. P.). Ericaceae (u. r). i N. Am. 



Zeocriton Beauv. = Hordeum Tourn. p.p. (Gram.). 



Zephyra D. Don. Amaryllidaceae (ill) (Haemodor. BH.}. i Chili. 



Zephyranthes Herb. Amaryllidaceae (i). 35 warm Am. Cult. orn. fl. 



Zerdana Boiss. Cruciferae (4). 2 Mts. of Persia. 



Zerumbet Garsault (Kaeniffora p.p.). Zingiberaceae (i). i trop. 

 As. 



Zeugites P. Br. Gramineae (10). 6 trop. Am. 



Zeuxine Lindl. Orchidaceae (u. 2). 20 trop. Afr., Inclomal. 



Zexmenia La Llave. Compositae (5). 40 trop. and subtrop. Am. 



Zeyheria Mart. Bignoniaceae (2). 2 Brazil. 



Zezegany (W. I.), Sesamum indicnm L. 



