350 JUG LAND A CEAE 



fls.); fl. with epig. P.; G (2), i-loc., with i erect orthotr. ov.; style 

 short with i stigmas. Fl. wind-fertilised; Juglans (q.v.) is chala- 

 zogamic. Di-upe or nut. Testa thin ; seed exalbuminous. Chief 

 genera: Pterocarya, Juglans, Carya. 



Juglandales. The 8th order of Dicotyledons (Archichl.). 



Juglandeae (BH. )=Juglandaceae. 



Juglandiflorae (Warming). The 3rd cohort of Choripetalae. 



Juglans L. fuglandaceae. 8 N. temp. J. regia L. is the walnut. 

 The 3 fl. is ' adnate' to the bract and bracteoles and has 5, 4, 3, or 2 P 

 leaves; the lowest fls. have as many as 2osta. , the upper as few as 6. 

 Drupe, with green fleshy exocarp, and hard endocarp (the shell). 

 The 'boats' into which the shell splits do not represent each a cpl.; 

 the splitting is down the midribs of the cpls. Within is the seed with 

 its thin brown seed-coat. It is exalbuminous with a basal radicle and 

 two large cotyledons, which are rendered irregular in shape by the 

 presence of partial septa in the ovary. The fl. of J. has lately been 

 shown to be chalazogamic. 



The wood of the walnut is valued in cabinet-making, &c. ; the 

 seeds yield an oil. Many var. are cult, for their fr. 



Jujube, Zizyphus vulgaris Lam. 



Juliania Schlechtd. Julianiaceae. 4 Mexico, Peru. Trees or shrubs 

 with alt. exstip. 1. and dioec. fls., <? in panicles, ? in fours, cf P 6 8, 

 A 68; ? naked, G i-loc. with i ovule on cup-like funicle. No 

 endosp. 



Julianiaceae (EP.) Dicots. (Archichl. Julianiales). Cf. Juliania, Or- 

 thopterygium (only gen.). 



Julianiales. The tenth order of Dicots. Archichlamydeae. 



Julocroton Mart. Euphorbiaceae (A. n. i). 20 trop. Am. Fls. in 

 spikes, the ? below, the <? above. 



Julostylis Thw. Malvaceae (4). i Ceylon. 



Juncaceae (EP., BH.). Monocotyledons (Liliiflorae; Calycinae BH.). 

 7 g en -> 3 S P- m damp and cold places, temp, and frigid zones and 

 trop. Mts. Usu. creeping sympodial rhiz., one joint of the sympodium 

 appearing above ground each year as a leafy shoot. The stem does 

 not often lengthen above ground, except to bear the infl.; 1. usu. narrow, 

 occasionally centric (Juncus). Infl. usu. a crowded mass of fls. 

 borne in cymes of various types, usu. monochasial. Fl. , regular 

 wind-fertilised. P 3 + 3, sepaloid, with the odd leaf of the inner 

 whorl post.; A 3 + 3 (or the inner wanting), anthers dehiscing lat., 

 pollen in tetrads; G (3); plac. axile or parietal, with oo or few 

 anatr. ov. ; style simple, with 3 brush-like stigmas. Loculic. caps. 

 Embryo straight, in starchy endosp. Chief genera: Prionium, Juncus, 

 Luzula. 



Juncaginaceae = Scheuchzeriaceae. 



Juncella F. Muell. (Trithuria BH.). Centrolepidaceae. 2 S. Austr., 

 Tasm. 



Juncellus C. B. Clarke (Cyperus p.p. EP.). Cyperaceae (i). 10 |*. 



Junceus (Lat.), rush-like. 



Juncoides Dill. Luzulu DC (June.). 



Juncus (Tourn.) L. Juncaceae. 225 cosmop. but chiefly in cold, wet 

 places. 1 8 sp. of rush are found in Brit. Most have a sympodial 



