OIUJKK 121. JUGLANDACE^E. 303 



1. EMPETRUM, Tourn. CROWBERRY. Fls. $ $ . Perianth consist- 

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

 long filaments. $ Stig. subsessile, 6-9-rayed. Drupe globular, with 69 

 seed-like nutlets. > Alpine. 



E. iilgru in L. A email prostrate shrub, 1 4f ; branches closely beset with oblohg* 

 linear leaves with rolled edges, 2 3" ; berries black, eatable. High mountains oT 

 N. Eng., N. Y. May, Jane. 



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. > 



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

 23"; flowers in terminal clusters, with brownish scales and purple stamen* 

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



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

 cated, concave, fimbriate 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. 5 Branches whorled, erect. 



C. ericoides MX. Sandy places, Qa., Fla. 3 Gf. Leaves whorled, crowded, linear- 

 terete, 56". Flowers reddish, followed by yellowish drupes. March, April. 



4. BATIS, P. Br. Fls. S $ , 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. > 

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



fleshy, 1'. Spikes 6", fleshy. Petals white. June September. 



ORDER CXX. PLATANACE^E. SYCAMORES. 



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

 rious stipules. Flowers moiiO3cious, in globular aments, destitute of both 

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

 mixed. Antfiers 2-celled, linear. Fertile. Ovary terminated by a thick 

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

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



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

 acter of the genus the same as that of the order. The $ and 9 flowers 

 in separate aments. 



P. occldciitalls 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 flotoers. 

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

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

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



