PENTANDRIA— MONOGYNIA. Rhamims. 327 



P. rectum svlvestre. Gesn. Ic. Pict, fnsc. 1. 36. t. 14./. 47. 



Xylo.steum.'/)orf. Pempt.4\2.f. Riv. Monop. Irr. 1. 120. 



In thickets and rocky places. 



In the fissures of rocks, under the Roman wall near Shewing- 

 Sheels, or rather Sewenshele, Northumberland. Ji'nllis. Plen- 

 tifully, and certainly wild, in a coi)i)ice called the Ilackctts, to 

 the east of Houghton bridge, 4 miles from Arundel, Sussex. Mr. 

 Borrer. 



Shrub. Jul I/. 



Stem erect, bushy, 4 or 5 feet high, with numerous, round branches ; 

 the young ones leafy and downy. Leaves deciduous, stalked, 

 ovate, acute, dull green, soft and flexible. Fl. small, cream- 

 coloured, or reddish, scentless, in pairs, on axillary simple stalks. 

 Bracfeas hairy, double ; the 2 outermost lanceolate, spreading ; 

 inner a small concave scale under each germen. Cal. in 5 ob- 

 tuse lobes. Cor. downy. Berries scarlet, oval, distinct, of I 

 cell, with about G seeds in each. A shrub of little beauty, and 

 no known i.itility, though common in plantations ; where 1 have 

 never seen any ripe fruit. 



120. RHAMNUS. Buckthorn. 



Linri. Gen. 105. Jim. 380. FL Br. 261. Toimi. t.306. Lam. t. 128. 

 GcErtn. t. 106. 



Frangula. Tourn. t. 383. 



Nat. Ord. Z)Mwzo5ir. Linn. 43. Rhamni. J uss. 95. N. 121 

 the same. 



CaL inferior, of 1 leaf, funnel-shaped ; coloured internally ; 

 limb in 5, sometimes only 4, acute, equal, spreading seg- 

 ments. Petals as many as the segments of the calyx, alter- 

 nate with them, small, convergnig, sometimes imperfect, 

 or wanting. Filam. in the moutli of the calyx, opposite 

 to each petal, awl-shai:>ed, short. A?it/i. romidish, two- 

 lobed, small. Germ, superior, roundish, seated on a glan- 

 dular disk. Style short, cylindrical, rarely divided. Sti'gma 

 in 2, 3, or 4 lobes. Berri/ nearly globular, of 2, 3, or 4 

 cells. Seeds solitary in each cell, rounded externally, 

 flattened at the inner side. 



The flowers are often more or less dioecious. 



Stem shrubby. Leaves stalked, simple and undivided. Sti- 

 ■pidas small, deciduous. Fl. small, on aggregate stalks, 

 yellowish. Berries blueish-black, purgative. 



1. R. catharticus. Comnion Buckthorn. 

 Thorns terminal. Flowers four-cleft, dioecious. Leaves 

 ovate, serrated. Stem erect. Berry with four seeds. 



