CHAP. ClI.

JUGLANDA'CETE. ju'glans.

1421

"lands. Fruit a drupe (a tryma, Watson). Covering of the nut, a fleshyhusk of one piece, that bursts irregularly. Nut woody, of 2 valves. Seed 1,erect, lobed, wrinkled, eatable in most, perhaps all.—Species 4, 3 native toNorth America , 1 to Asia . Large trees. Bate of growth quicker than inCarya. 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 plane. Some speciespubigerous; ? hairs simple, glanded. (T. frees ab Esenbeck Gen. PI. FI.Germ., Lindley Nat. Syst. Pot., Nuttatt Gen. N. Amer. PI., Michaux NorthAmer. Sylva, and observation.)

Ca'kya Nuttall. Flowers unisexual, those of the two sexes upon one plant;male, female, and leaves, all upon a shoot, developed from one bud in theyear of the flowering; male flowers borne at the base of the shoot belowthe leaves, or in the axils of the lower leaves; the female flowers, a fewtogether about the tip of the shoot.—Male. Flowers in slender pendulouscatkins, that are disposed 3 upon a peduncle. Calyx a 3-parted minuteleaf. Stamens 4—6. — Female. Calyx including, and adhering to, theovary: its tip free, and 4-cleft. Stigma sessile upon the ovary, partlydiscoid, 2—4-lobed. Fruit a drupe (a tryma, Watson). Husk fleshy,separating into 4 equal valves, or dividing into 4 equal portions in theupper part. Nut with 4 or more bluntish angles in its transverse outline;the surface pretty even. Seed eatable or bitter.—Species about 10, nativeto North America . Large trees. Rate of growth slower than in ,/uglans.Bark appearing reticulated. — Leaf buds partially covered with scales insome species, naked in others. Leaves alternate, impari-pinnate, of 5—15serrate leaflets; all, except the terminal one, in opposite, or nearly opposite,pairs; and all spreading in one plane. Pubescence stellate. Fruit uponshort stiff stalks. Nuttall has stated {Gen.) that the sexes are poly-gamous; but he has not described the bisexual flowers, nor the dispo-sition of them. {Nuttall Gen., Michaux N. Amer. Sylva, Watson Fend.Brit.)

Pteroca'rya Kunth. Flowers unisexual, those of the 2 sexes upon one plant.—Male. Flowers in spikes. Stamens in a flower many.—Female. Flowersin long pendulous spikes, and distant, sessile, and ? without bracteas.Calyx connate with the ovary, except in a terminal portion, which is cleftinto ? 3—5 ? 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; much 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, itslower part in 4 deep lobes. Embryo not accompanied by albumen; itsradicle uppermost.—Species 1, indigenous to the eastern part of Caucasus,and in moist woods, by the Caspian Sea . A tree. Leaves impari-pinnatenot dotted; leaflets about 17, lanceolate, sessile, unequal at the base, ar-gutely serrulate; the veins beneath villous. Fruit small. {Ninth in Ann.tscien. Nat., ii. p. 346.; Willd. Sj>. PI.; and Sprang. Syst. Veg.).

Genus I.

•HJ'GLANS L. Tiie Wal nut Tree. Lin. Syst. Monoe'cia Polyandria.

teenlf cation. Schreb. Lin. Gen., No. 144(1.; T. Nees ab Esenbeck Gen. PI. FI. Germ., fasc. a t. 2.;,wi' tren> Amer. PL, 2. p. 220., Lindl Nat. Syst. ofBot., p. 180.

&erh)J'r tCS ' ^' r - 5 Walnuss, Gcr.

bv thp 'R ‘^''S ians is contracted from Jovis, Jove’s, and glans, a mast, or acorn ; and was applied/ ne Roman writers to this tree, on account of the excellence of its fruit as food, compared with