JUGLANDACEAE. 97 



enclosing the bony endoearp or nut which is incompletely 2-4-celled. Seed 

 large, 2-4-lobed. Endosperm none. Cotyledons corrugated, very oily. 

 Radicle minute, superior. Only one family. 



Family 1. JUGLANDACEAE Lindl. 



Walnut Family. 



Characters of the order. Six genera and about 35 species, mostly of 

 the warmer parts of the north temperate zone. 



Juglans regia L., English Walnut, has occasionally been planted; its 

 nut has a nearly smooth shell. 



Juglans nigra L., Black Walnut, North American, is recorded by Lefroy 

 as having been represented by one or two specimens at Par-la-Villc, Hamilton, 

 and by H. B. Small at Eosebank. Its nut has a rough corrugated shell. 



A walnut tree at Mount Hope, about 30° high, apparently a hybrid be- 

 tween the two preceding, produced nuts abundantly in 1914. 



Hicoria Pecan (Marsh.) Britton, Pecan, North American, a large tree, 

 with nearly glabrous mature leaves of 11-15 falcate, lanceolate, acuminate 

 leaflets 2'-6' long, with pendulous sterile aments, oblong fruits l'-2' long, the 

 thin husk splitting into 4 valves, the smooth sweet-seeded nuts pointed, has 

 occasionally been planted. A tree about 50° high may be seen at St. Georges, 

 and another nearly as large, about 40 years old, at Fencote, Hamilton. 



Order 6. FAGALES. 



Trees or shrubs, with small monoecious or rarely dioecious flowers in 

 aments, or the pistillate ones subtended by an involucre, which becomes a 

 bur or cup in fruit. Calyx usually present. Corolla none. Endosperm 

 none. 



Family 2. FAGACEAE Drude. 

 Beech Family. 



Trees or shrubs. Leaves alternate, petioled, pinnately veined, the 

 stipules, if any, deciduous. Flowers small, monoecious, the staminate in 

 drooping, slender aments, or capitate, the pistillate subtended by an in- 

 volucre of partly or wholly united bracts, which becomes a bur or cup. 

 Staminate flowers with a 4-7-lobed perianth and 4-20 stamens; filaments 

 slender, distinct, simple; anther-sacs longitudinally dehiscent. Pistillate 

 flowers with a 4-8-lobed urn-shaped or oblong perianth, adnate to the 3-7- 

 celled ovary; ovules 1 or 2 in each cavity, only 1 in each ovary ripening, 

 pendulous, anatropous; styles as many as the cavities of the ovarj-, linear. 

 Fruit a 1-seeded nut, with a coriaceous or somewhat bony exocarp. Testa 

 thin. Cotyledons large, fleshy, often rugose ; radicle short. About 5 genera 

 and 400 species, of very wide geographic distribution. 



Quercus Robur L., English Oak, European, planted in Pembroke Church- 

 yard, was seen there in 1914, as a tree about 10° high, with a trunk 135' in 

 circumference just above the base. Its leaves are glabrous, nearly sessile, 4'-7' 



