JUGLANDACEAE 403 
ORDER JUGLANDALES — JUGLANDAL ORDER 
Trees. Leaves alternate: blades pinnate. Flowers monoecious, the 
 staminate in lateral aments on the twigs of the preceding year, with a 
2-6 lobed calyx bearing several rows of stamens, or the calyx obsolete. 
Pistillate flowers terminal, consisting of an involucrate 2—4-carpellary 
gynoecium: calyx partially adnate to the gynoecium. Fruit drupe- like, 
the nut enclosed in an indehiscent or a dehiscent involuere. Seed oily.— 
Seven genera and about 40 species, mostly in the north temperate zone. 
Famity 1. JUGLANDACEAE — WanNuT FAMILY 
Aromatie trees, with hard wood. Leaves with unequally p 
blades. ‘Stamin ate med solitary or clustered. Involucre of t ruits 
dry or juiey.—The wood 2 = of the species is used in tne: ne 
construction, and impleme 
Staminate aments stout, simple, sessile or short-stalked: husk indehiscent: nut 
sculptured. 1. WALLIA. 
Staminate aments slender, branched, long-stalked : husk dehiscent: nut 
not sculptured. 2. II1cOnRIA. 
ALLIA Alef. Bark furrowed. Pith in plates. Leaflets condupli- 
cate in vernation. Staminate aments simple. Anther-connective conspicu- 
ous.—About 8 species, natives of North America, West Indies, and the Andes 
of South America.—Spr.—WALNUTS.—The genus Juglans to which the d 
ican walnut and the butternut are usually referred is typified by J. 
which is generically distinct. 
Sn connective a rounded tip; fruit elongate, viscid-pubescent : 
ut 4-anglec 1. W. cinerea. 
Rice. Connectisd erown-like: fruit not elongate, glabrous: nut not 
angled. 2. W. nigra. 
W. cinerea (L.) Alef. Tree becoming 30 m. tall, the heartwood m 
leaflets 11-17, the blades lanceolate to elliptic-lanceolate or elliptic, 6-8 em 
o y t 6- 
th 
ridges tee ms brittle. uglans cinerea 
L. |— (BuT UT. WHITE-WALNUT. OIL- 
Num S M various provinces, N 
oe E ei B Ga. to Ark., N. Dak., 
—A valuable tree for nuts and 
CR kd 
dut 
2. W. nigra (L.) Alef. Tree becoming 
50 m. tall the heart-wood a brown 
ades 8-1 
e 15-23, the ble long, 
ounded o r subcordate at the on stami- 
em ame 9— n. long: it 5-8 e 
in diameter: nut 4-e below the middle, 
t 4-celled 
undue the E pen thick, firm. [Juglan 
a L.]—(BLACK-WALNUT. \— Rich soil, ori in woods, various provinces, 
"Fla. to Tex., Minn., Ont., and Mass.—A very valuable ‘tree, both for nuts 
and wood. 
