ORDER 121. JUGLANDACE^E. 303 



1. EMFETRUM, Tourn. CROWBERRY. Fls. $ ? . Perianth consist- 

 ing of 2 series of scales, the 3 inner petaloicl. $ Sta. 3, anth. pendulous on 

 long filaments. $ Stig. subsessile, 6-9-rayed. Drupe globular, with 6 9 

 seed-like nutlets. > Alpine. 



E. nlgrum L. A small prostrate shrub, Iif; branches closely beset with oblomg- 

 linear leaves with rolled edges, 23" ; berries black, eatable. High mountains of 

 N. Bug., N. Y. May, June. 



2. COREMA, Don. Perianth of 5 or 6 bractlets, the 3 inner sepaloid. 

 $ Sta. 3, exserted. $ Ovary 3- or 4-celled. Style filiform, 3- or 4-cleft, 



with narrow stigmas. Drupe globular, minute, with 3 or 4 seeds. ^ 



. Conradii Torr. Shrublets diffusely branched, 612', with narrowly linear leaves, 

 2 3"; flowers in terminal clusters, with brownish scales and purple stamens- 

 Sandy barrens, N. J. and N-E., forming blackish tufts. April. 



3. CERATIOLA, MX. SAND-HILL ROSEMARY. Fls. s , of 6 8 imbri- 

 cated, concave, timbriate scales, the 2 or 4 inner membranous. $ Sta. 2, 

 exserted, anth. 2-celled, roundish. $ Ovary 2-celled. Style short. Stig. 

 4 or 6, spreading, toothed. Drupe 2-seeded. J> Branches whorled, erect. 



C. erlcoides MX. Sandy places, Ga., Fla. 3 Gf. Leaves whorled, crowded, linear- 

 terete, 5 6''. Flo \Vers reddish, followed by yellowish drupes. March, April. 



4. BATIS, P. Br. Fls. $ ? , in cone-like spikes. $ Calyx of 2 unequal, 

 united sepals. Pet. 4, clawed. Sta. 4, anthers introrse, exserted. $ A 

 mass of 4-celled ovaries only, becoming a sorosis of 4-seeded drupes. > 

 B. maritima L. Salt marshes, Fla. Stems prostrate, 2 3f; leaves club-shaped 



fleshy, 1'. Spikes 5", fleshy. Petals white. June September. 



ORDER CXX. PL AT AN ACE ^E. SYCAMORES. 



Trees with a watery juice, alternate, palmate leaves, and sheathing, sca- 

 rious stipules. Flowers monoecious, in globular aments, destitute of both 

 calyx and corolla. Sterile. Stamens single, with only small scales inter- 

 mixed. Anthers 2-celled, linear. Fertile. Ova ry terminated by a thick 

 style with one side stigmatic. Nut clavate, tipped with the persistent, re- 

 curved style. Seed solitary, albuminous. Fig. 288. 



PLATANUS, L. PLANE TREE. BUTTON WOOD. SYCAMORE. Char- 

 acter of the genus the same as that of the order. The $ and $ flowers 

 in separate aments. 

 P. occidentalis L. Tree in hard, gravelly soil, 50 80f. The trunk grows to great 



size, and hollow ; bark whitish ; leaves large, angularly lobed and toothed ; stipules 



oblique ; balls pendulous, solitary. May. 



ORDER CXXI. JUGLANDACE^E. WALNUTS. 



Trees with alternate, pinnate, exstipulate leaves and monoecious flowers. 

 Sterile flowers in aments, with an irregular perianth. Fertile, solitary or 

 clustered. ? Calyx regular, 3-5-lobed, tube adherent to the partly 2-4- 

 celled ovary. Fruit a tryma ( 157), with a fibrous epicarp (shuck} and a 



