86 ROSACEA. 
18. Pyrus. Cal. 5-toothed. Pet. 5. Styles 2—5. Fr. 
fleshy with 5 cartilaginous distinct 2-seeded cells. Testa 
cartilaginous. 
Tribe I. Amygdalece. 
1 . Prunus Linn. 
1. P. spinosa (L.) ; peduncles mostly solitary glabrous, I. ellip- 
tical glabrous, branches spinous, fr. globose. — E. B. 842. 
St. 3. 2. — L. sometimes slightly downy near the lower part of 
the midrib beneath, generally appearing after the fl. but some- 
times at the same time with them when it is the /3. cocefanea 
(Wimm.), P. fraticans Weihe ? Young branches downy. — 
Hedges and thickets. Sh. IV. V. Black Thorn. Sloe. 
2. ? P. insititia (L.) ; peduncles visually 2 together downy, I. 
elliptical or ovate-lanceolate downy beneath, branches slightly 
spinous, fr. globose. — E. B. 84 1 . — L. usually very downy beneath 
and slightly so above, particularly when young, usually appear- 
ing at the same time with the flowers. Young branches downy. 
— Hedges and thickets. Sh. IV. V. Wild Bullace. 
3. ? P. domestica (L.) ; peduncles usually 2 together glabrous, 
I. ovate-lanceolate hairy about the midrib beneath, branches 
without spines, " fr. mostly oblong." — E. B. 1783. — L. downy 
when young, afterwards glabrous except the lower half of the 
midrib which is densely woolly, appearing at the same time 
with the flowers. — I have endeavoured to characterise these 3 
plants, not from a belief that they are true species, but only in 
deference to the many excellent botanists who consider them as 
really distinct. It appears to me that they are only varieties of 
one species and that upon examination nearly every individual 
will be found to differ from its neighbour. — Woods and thickets. 
T. IV. V. mid Plum. 
4. P. Padus (L.) ; arborescent, 1. obovate-lanceolate finely 
serrate glabrous, _/?. in pendulous racemes, fr. roundish-oblong. — 
E. B. 1383. — A small tree. L. minutely doubly serrate. Fl. 
white, numerous, in a lax raceme. Fr. black, harsh and bitter, 
with a corrugated nut. — Woods and hedges. T.V. Bird Cherry. 
5. P. Avium (L.) ; arborescent, I. drooping oblong-obovate 
suddenly cuspidate inciso-serrate downy beneath, calyx-tube con- 
tracted below the entire sepals, " fr. heartshaped." — E. B. 706. 
— Cerasus Leight. — A tree of 20 — 30 feet high. Outer scales of 
the leaf-buds deflexed. Flower-buds not leafy. Fl. in umbels. 
Pet. bifid, with a minute claw. " Fr. black, lusciously bitter- 
sweet." — Woods. T. V. Wild Cherry. 
6. P. Cerasus (L.) ; fruticose, I. not drooping oblong-obovate 
or ovate-lanceolate doubly crenate-serrate glabrous, calyx-tube 
