2006 



ZEA 



Var. indentata (Z. indentata, Sturt. ). DENT CORN. 

 Fig. 2780. Plate VII. A group recognized by the pres- 

 ence of corneous endosperm at the sides of the kernel, 

 the starchy endosperm extending to the summit. By the 

 drying and shrinkage of 

 the starchy matter the 

 summit of the kernel is 

 drawn in or together, and 

 indented in various forms. 

 In different varieties the 

 corneous endosperm varies 

 in height and thickness, 

 thus determining the char- 

 acter of the indented sur- 

 face. 



2780. Dent Corn Zea 

 Mays, var. indentata 



(XX). 



2779. Flint Corn. Var. indu- 

 rata(X^). 



Var. amylacea (Z. amylA- 

 eea, Sturt.). SOFT CORNS. 

 This group is at once recog- 

 nized by the absence of cor- 

 neous endosperm. Through 

 the uniformity of the shrink- 

 age in ripening there is usu- 

 ally no indentation, yet in 

 some varieties an indentation 

 may more or less frequently 

 appear, but splitting the ker- 

 nel infallibly determines the 

 class. 



Var. saccharata (Z. saccha- 

 rdta, Sturt.). SWEET CORN. 

 Figs. 2781, 2782, 551. Plate 

 VII. A well-defined group 

 characterized by the translu- 

 cent, horny appearance of the 

 kernels and their more or less crinkled, 

 wrinkled, or shriveled condition. 



Var.^amylea-saccharata (Z. ami)lea-saccha- 

 rata, Sturt.). STARCHY-SWEET CORN. This 

 group is founded upon three varieties found 

 in the San Pedro Indian collection of Dr. 

 Palmer and sent in 1886. The external ap- 

 pearance of the kernel is that of a sweet, but 

 examination shows that the lower half of the 

 kernel is starchy, the upper half horny and 

 translucent. These varieties all had a white 

 cob, the kernels deeper than broad. 



L. H. B. 



ZEBRlNA (name refers to the striped 

 leaves). CommelinAcece. Differs from Tra- 

 descantia chiefly in the fact that the corolla 

 is tubular (petals not free); stamens 6, 

 equal; fls. few, sessile, in 2 conduplicate bracts, 

 species. 



p6ndula, Schnizl (Tradescdntia sebrlna, Hort T 

 tricolor, Hort., in part. Cyandtis vittata, Lindl. Com- 



F/LrV^ T ^ rt>) V. WANDERING JEW, in part. 

 tigs. 2783-84. Trailing, half-succulent perennial herb 

 oting at the. joints: Ivs. lance-ovate, sessile, the leaf- 

 iheath about % m. long and hairy at top and bottom 

 md sometimes throughout its length; under surface of 

 eat : red-purple; : upper surface silvery white, suffused 

 rit& purplish, the central part and the margins purple- 



ZELKOVA 



striped: fls. about 2, rose-red, contained in two boat- 

 shaped bracts, one of which is much smaller than the 

 other. Mexico. A very common greenhouse plant, 

 much used for baskets and for covering the ground un- 

 derneath benches. Commonly confused with Trades- 



cantia fluminensis, 



Fig. 2785, and some- 

 times with C'omme- 



lina nudiflora. See 



Tradescantia. The 



Ivs. of Z. pendula 



seem never to be 



green. They vary 



somewhat in color. 



All forms are easily 



grown, and they 



propagate readily 



from pieces of 2783. Flower 



stem. Var. quadri- of Zebrina 



color, Voss (Tra- pendula, 



descdntia quadri- Slightly en- 



color and T. multi- larged. 



color, Hort. ) . Lvs. 



with metallic green undertone 



and striped with green, red and 



white. Handsome. T.I H R 



2784. Zebrina pendula. 



, ZELKOVA (after the verna- 

 cular name Zelkoua in Crete, or 



Selkwa in the Caucasus). Syn., Abelicea. Urticacece. 



Ornamental deciduous trees, with alternate, short-peti- 



oled, toothed leaves and insignificant flowers in axillary 



clusters or solitary, followed by small drupe-like fruits. 



Z. acuminata is hardy north and Z. crenata hardy as 



far north as Mass., at least in sheltered positions. The 



Zelkovas, particularly Z. acuminata, are handsome 

 trees of graceful habit, much resembling 

 a small-leaved elm tree. They seem not 

 to be very particular as to soil and posi- 

 tion. Prop, by seeds sown soon after 

 ripening; also by layers and by grafting on 

 Ulmus. Four species are known, natives 

 of Crete, the Caucasus and E. Asia. 

 They are allied to Celtis and Aphananthe 

 and are chiefly distinguished by the con- 

 nate sepals. From the elms, which they 

 much resemble in foliage, they are easily 

 distinguished by the drupe - like fruits. 



2781. Sugar or Sweet Corn Zea 

 Mays, var. saccharata (X %). 



A green ear, with unshrunken 

 kernels, 



Two 



Trees, sometimes 

 shrubby, with pen- 

 ninerved, stipulate 

 Ivs.: fls. polygam- 

 ous, the perfect ones 

 solitary in the axils 

 of the upper Ivs., the 

 staminate ones clus- 

 tered in the axils of 2782. Sweet Corn when mature and 

 lower Ivs. or bracts; dry, showing the shrinking of 



calyx 4-5-lobed; sta- the kernels (X ^). 



