CHAP. ClI. JUGLANDA^CETE. JU'GLANS. 14'21 



glands. Fruit a drupe (a trynia, Watson). Covering of the nut, a fleshy 

 husk of one piece, that bursts irregularly. Nut woody, of 2 valves. Seed i, 

 erect, lobed, wrinkled, eatable in most, perhaps all.— Species 4, 3 native to 

 North America, 1 to Asia. Large trees. Kate of growth quicker than in 

 6'arya. Leaf bud not covered by scales. Leaves alternate, impari-pinnate, 

 of 5 — 19 leaflets, all but the terminal one in opposite, or nearly opposite, 

 pairs ; all serrate in most, and all spreading in one |)lane. Some species 

 pubigerous ; ? hairs simple, glanded. (T*. Necs ah Esenbeclc Gen. PL Fl. 

 Germ., Lindlcy Nat. Sj/.sf. Bot., NuttaU Gen. N. Amer. PL, Michaux North 

 Amer. Sijlva, and observation.) 



CVrya NuttalL Flowers unisexual, those of the two sexes upon one plant; 

 male, female, and leaves, all upon a shoot, developed from one bud in the 

 year of the flowering; male flowers borne at the base of the shoot below 

 the leaves, or in the axils of the lower leaves; the female flowers, a few 

 together about the tip of the shoot. — Male. Flowers in slender pendulous 

 catkins, that are disposed 3 upon a peduncle. Calyx a 3-parted minute 

 leaf. Stamens 4* — 6. — Female. Calyx including, and adhering to, the 

 ovary : its tip free, and -t-cleft. Stigma sessile upon the ovary, partly 

 discoid, 2 — 4-lobed. Fruit a drupe (a tryma, Watson). Husk fleshy, 

 separating into 4 equal valves, or dividing into 4 equal portions in the 

 upper part. Nut with 4 or more bluntish angles in its transverse outline ; 

 the surface pretty even. Seed eatable or bitter. — Species about 10, native 

 to North America. Large trees. Rate of growth slower than in Juglans. 

 Bark appearing reticulated. — Leaf buds partially covered with scales in 

 some species, naked in others. Leaves alternate, impari-pinnate, of 5 — 15 

 serrate leaflets ; all, except the terminal one, in opposite, or nearly opposite, 

 pairs; and all spreading in one plane. Pubescence stellate. Fruit upon 

 short stifl" stalks. NuttaU has stated {Gen.) that the sexes are poly- 

 gamous; but he has not described the bisexual flowers, nor the dispo- 

 sition of them. (^NuttaU Gen., Michaux N. Amer. St/lva, Watson Dend. 

 Brit.) 



Pteroca^rya Kunth. Flowers unisexual, those of the 2 sexes upon one plant. 

 — Male. Flowers in spikes. Stamens in a flower many. — Female. Flowers 

 in long pendulous spikes, and distant, sessile, and ':' without bractcas. 

 Calyx connate with the ovary, except in a terminal portion, which is cleft 

 into ?3 — 5 y unequal lobes. Ovary, and the part of the calyx that is con- 

 nate with it, taken together, flagon-shaped, bearing 2 wings above the base; 

 their direction transverse and oblique: cell 1; ovule 1, erect. Style 1, 

 very short. Stigmas 2, large, spreading, revolute. Fruit subdrupaceous, 

 angled; having 2 wings, as the ovary; nuich tapered to the tip, not open- 

 ing, containing a bony nut, which has 4 cells in its lower part, whose parti- 

 tions do not extend to the top, so that it is 1 -celled there. Seed 1, its 

 lower part in 4 deep lobes. Embryo not accompanied by albumen ; its 

 radicle uppermost. — Species 1, indigenous to the eastern part of Caucasus, 

 and in moist woods, by the Caspian Sea. A tree. Leaves impari-pinnate 

 not dottctl ; leaflets about 1 7, lanceolate, sessile, unequal at the base, ar- 

 gutely serrulate; the veins beneath villous. Fruit small. (^Kunth in Ann. 

 Scicn. Nat , ii. p. 3-l'6. ; Willd. Sp. PL ; and Spreng. S^st. Veg.). 



Genus I. 



./U'GLANS L. The Walnut Tree. Lin. Syst. Monoe'cia Polyandria. 



Identification. Schrcb. Lin. Oen., No. H+fi. ; T. Nees ab Escnbcck Gcii. PI. Fl. Germ., fasc. 3. t. •i. ; 



Nutt. Gen. N, Amer. PI., '.'. p. 220., Lindl. Nat. Syst. of Bot., \>. 180. 

 Synonytncs. Noyer, h'r. ; Walnu.s.s, Ger. 

 Derivation, ./iiglans is contracteil from Jovis, Jove's, and {i/aHS, a mast, or aoorn ; and was applieii 



by the Roman writers to this tree, on account of the excellence of its fruit as food, compared with 



