90 26. ROSACES. 



** Young leaves conduplicate . CERASUS. 



2. P. Padus (L.); arborescent, 1. obovate-lanceolate finely 

 serrate glabrous, fl. in pendulous racemes, fr. roundish-oblong. 

 E. B. 1383. A small tree. L. minutely doubly serrate. Fl. 

 white, many, in a lax raceme. Fr. black, harsh and bitter, with 

 a corrugated nut. Woods and hedges. T. V. Bird Cherry. 



3. P. Avium (L.) ; arborescent, /. drooping oblong-obovate 

 suddenly cuspidate incise-serrate downy beneath, calyx-tube con- 

 tracted below the entire sepals, " fr. heartshaped." E. B. 706. 

 A tree of 20-^30 feet high. Outer scales of the leaf-buds de- 

 flexed. Flower-buds not leafy. Fl. in umbels. Pet. bifid, with 

 a minute claw. " Fr. firm, bitter, black or red." Borr. Woods. 

 T. V. Wild Cherry. 



4. P. Cerasus (L.) ; fruticose, /. not drooping oblong-obovate 

 or ovate-lanceolate doubly crenate-serrate glabrous, calyx-tube 

 not contracted, fruit round. E. B. S. 2863. An erect bushy 

 shrub, 3 8 feet high. Umbels scattered. Outer scales of the 

 leaf-buds erect. Inner scales of the flower-buds leafy. Sep. 

 crenate-serrate. Pet. subemarginate, with a claw. " Fr. juicy, 

 acid, always red." Hedges. Sh. V. E. 



Suborder II. Rosece. Tribe I. Spir&ce. 



2. SPIRAEA Linn. 



fl. S. salicifolia (L.); shrubby, stip. 0, 1. elliptic-lanceolate 

 unequally serrate glabrous, racemes terminal compound, stam. 

 exceeding the petals. E. B. 1468. A shrub of 4 5 feet high 

 with smooth round wandlike branches. Fl. flesh-coloured, in 

 dense erect racemes. Damp woods in the north and in Wales. 

 Sh. VII. E. S. *L 



2. S. Ulmaria (L.) ; herbaceous, stip. rounded toothed, 1. in- 

 terruptedly pinnate, leaflets ovate undivided, the terminal one 

 larger palmately 3 5-lobed, fl. in compound proliferous cymes, 

 caps, glabrous contorted. E. B. 960. St. 18. 8. St. about 3 

 feet high, angular, branched. L. with a few large serrated leaf- 

 lets and very minute intermediate ones, downy beneath. Pe- 

 duncles downy. Fl. yellowish, sweetscented. Pet. roundish. 

 Meadows and by water. P. VI. VIII. Meadow-sweet. 



3. S. Filipendula (L.); herbaceous, stip. of the root-leaves 

 linear acute entire, those of the stem rounded and cut, 1. inter- 

 ruptedly pinnate, leaflets all oblong deeply cut and serrate, fl. in 

 a panicled cyme, caps, hairy parallelly' adpressed. E. B. 284. 

 St. 18. 7- Root producing tubers. St. 1 Hfoot high, round, 

 simple, panicled at the top. L. mostly radical, spreading; leaf- 



