ORDER 121. JUGLANDACEJ3. 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 G 9 

 seed-like nutlets. > Alpine. 



E. iiigrum L. A small prostrate shrub, 1 4f; branches closely beset with obloag- 

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

 N. Eng., N. Y. May, June. 



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

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



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



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

 2 3"; flowers in terminal clusters, with brownish scales and purple stamen*. 

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



3. CERAT^OIiA, MX. SAND-HILL ROSEMARY. Fls. <9 , of 6 8 imbri- 

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

 exserted, anth. 2-celled, roundish. 5 Ovary 2-celled. Style short. Stig. 

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

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

 terete, 5 t>". Flowers reddish, followed by yellowish clrnpes. March, April. 



4. BATIS, P. Br. Fls. 6 $ , in cone-like spikes. $ Calyx of 2 unequal, 

 united sepals. Pet. 4, clawed. Sta. 4, anthers introrse, exserted. 2 A 

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

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



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



ORDER CXX. PLATANACE^E. SYCAMORES. 



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

 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. Ovary 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 6 and ? flowers 

 in separate aments. 



P. occideiitalis 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^. WALNUTS. 



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

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

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

 <;e41ed ovary. Fruit a tryma ( 157), with a fibrous cpicarp (shuck) and n 



