57 s SAURURACEAE. Vol. I. 



pels, recurved, stigmatic along the inner side. Fruit rugose, depressed-globose, separating 



into 3 or 4 one-seeded carpels. [Name Greek, lizard's tail, alluding to the long slender spike.] 



Two species, the following typical one of eastern North America, the other of eastern Asia. 



i. Saururus cernuus L. Lizard's-tail. 

 Fig. 1420. 



Saururus cernuus L. Sp. PI. 341. 1753. 



Somewhat pubescent when young, becoming 

 glabrous; stem rather slender, erect, sparingly 

 branched, 2°-s° high. Leaves ovate, thin, pal- 

 mately 5-9-ribbed and with a pair of strong ribs 

 above, which run nearly to the apex, dark green, 

 entire, deeply cordate at the base, acuminate, 

 3'-6' long, 2-3 ¥ wide; petioles stout, shorter 

 than the blades, striate; spikes few, very dense, 

 longer than their peduncles, 4'-6' long, the apex 

 drooping in flower; flowers fragrant; stamens 

 white, spreading, about 2" long; fruit slightly 

 fleshy, ii" in diameter, strongly wrinkled when 

 dry. 



In swamps and shallow water, Rhode Island to 

 Florida, west to southern Ontario, Minnesota and 

 Texas. Swamp-lily. Breast-weed. June-Aug. 



Family 2. ■ JUGLANDACEAE Lindl. Nat. Syst. Ed. 2, 180. 1836. 



Walnut Family. 



Trees with alternate pinnately compound leaves, and monoecious bracteolate 

 flowers, the staminate in long drooping aments ; the pistillate solitary or several 

 together. Staminate flowers consisting of 3-numerous stamens with or without 

 an irregularly lobed perianth adnate to the bractlet, very rarely with a rudimentary 

 ovary. Anthers erect, 2-celled, the sacs longitudinally dehiscent; filaments short. 

 Pistillate flowers bracted and usually 2-bracteolate, with a 3-5-lobed (normally 

 4-lobed) calyx or with both calyx and petals, and an inferior i-celled or incom- 

 pletely 2-4-celled ovary. Q,vule solitary, erect, orthotropous ; styles 2, stigmatic 

 on the inner surface. Fruit in our genera a drupe with indehiscent or dehiscent, 

 fibrous or woody exocarp (husk; ripened calyx; also regarded as an involucre), 

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

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

 minute, superior. 



Six genera and about 35 species, mostly of the warmer parts of the north temperate zone, 

 extending in America south along the Andes to Bolivia. The young leaves in the bud are stipulate 

 in at least two species of Hicoria. The family is not closely related to the other ament-bearing 

 ones ; its affinity is with the Anacardiaceae. 



Husk indehiscent ; nut rugose. 1. Juglans. 



Husk at length splitting into segments ; nut smooth or angled. 2. Hicoria. 



i. JUGLANS L. Sp. PI. 997. 1753. 



Trees with spreading branches, superposed buds, fragrant bark, and odd-pinnate leaves, 

 with nearly or quite sessile leaflets, the terminal one sometimes early perishing. Staminate 

 flowers in drooping cylindric aments, borne on the twigs of the previous year; perianth 2-6- 

 lobed; stamens 8-40 in 2 or more series. Pistillate flowers solitary or several together on a 

 terminal 'peduncle at the end of shoots of the season, the calyx 4-lobed, with 4 small petals 

 adnate to the ovary at the sinuses ; styles fimbriate, very short. Drupe large, globose or 

 ovoid, the exocarp somewhat fleshy, fibrous, indehiscent, the endocarp bony, rugose or 

 sculptured, 2-4-celled at the base, indehiscent, or in decay separating into 2 valves. [Name 

 a contraction of the Latin Jovis glans, the nut of Jupiter.] 



About 8 species, natives of the north temperate zone, one in the West Indies, 1 or 2 in the 

 Andes of South America. Besides the following 3 others occur in the southwestern United States. 

 Type species : Juglans regia L. 



Fruit globose, obtuse, not viscid ; petioles puberulent. 1. /. nigra. 



Fruit oblong, pointed, viscid ; petioles pubescent. 2. /. cinerea. 



