ZJZANIA 



697 



i Mexico. 

 i E. Afr. 



Zichya Hueg. = Kennedya Vent. p.p. (Legum.). 



Zieria Sm. Rutaceae (i). 10 E. Austr. 



Zieridium Baill. Rutaceae (i). i New Caled. 



Zilla Forsk. Cruciferae (2). sN.Afr. 



Zimapania Engl. et Pax. Euphorbiaceae (A. n 



Zimmermannia Pax. Euphorbiaceae (A. I. i). 



Zingiber Adans. Zingiberaceae. Labellum large ; opp. to it are the style 



and tlie petaloid fertile sta. The stigma has many rays. Z. officinale 



Rose, is the ginger; it is always repr. by veg. methods, and is quite 



sterile (cf. Musa). It is largely cult.; the rhiz. are dug up and killed 



in boiling water. According to whether the rind is or is not scraped 



off, the product is known as 'scraped' or 'coated' ginger. 

 Zingiberaceae (EP. ; Sritamineaep.p.JSJI.). Monocots. (Scitamineae). 



35 g en -' 800 sp., trop., chiefly Indomal. Perenn. herbs usu. with 



sympodial fleshy rhiz., often with tuberous roots. Aerial stem, if 



any, short; sometimes an apparent stem is formed as in Musa by 



the rolled up leaf-sheaths. L. 2-ranked, with 



short stalks and sheathing bases. At the 



top of the sheath is a char, ligule (cf. Grami- 



neae). Els. in racemes, heads, or cymes. 



Their morphology much discussed (see Eich- 



ler's Bliithendiag. or Nat. Pfl.}. Bracteole 



often sheathing (as in fig.). K (3), the odd 



one ant., C 3, usu. different in colour and 



texture from the outer P-leaves. Of the 



possible 6 members of the A (two whorls), 



the post, one of the inner whorl is present 



as a fertile epipet. sta., and the other two 



of this whorl are united to form the petaloid 



label/urn (not equivalent to that of Orchids), 



which may be 2- or 3-lobed; the ant. sta. 



of the outer whorl is always absent ; the 



other two may be absent (as in Renealmia) or 



may be present as large leafy stds. right_and left of the fertile sta. 



(cf. with Cannaceae and Marantaceae). G (3), 3-loc., with oo anatr. 



or semi-anatr. ov. Fr. usu. a loculic. caps. Seeds with perisperm. 



The fam. contains several economic plants; see Curcuma, Costus, 



Alpinia, Zingiber, Amomum, Elettaria. 

 Classification and chief genera : 



I. Z1NGIBEROIDEAE (1. 2-ranked; lat. stds. different or 

 wanting; pi. aromatic): Hedychium, Kaempfera, Cur- 

 cuma, Globba, Zingiber, Amomum, Renealmia, Alpinia. 

 II. COSTOIDEAE (1. alt.; lat. stds. usu. wanting; sub- 

 aerial parts not aromatic) : Costus, Tapeinochilus. 

 Zinnia L. Compositae (5). 12 N. Am., cult. orn. fl. L. opp. or 



whorled. Fr. winged. 



Zinowiewia Turcz. Celastraceae. i Mexico. 

 Zippelia Blume. Piperaceae. i Java. 

 Zizania Gronov. ex Linn. Gramineae (6). 2 Am., N.E. As., Z. 



aquatica L. (Hydropyrum esculent nm Link), Canada rice, is used 



as a cereal by the N. Am. Indians. 



Floral diagram of Re- 

 nealmina, modified from 

 Eichler, showing bract, 

 sheathing bracteole, calyx, 

 corolla, labellum (I.AB), &c. 



