384 
PRIMULA, PYCNANTHEMUM. 
somewhat lobed ; cauline ones round-ovate, toothed, petioled ; upper ones 
most lanceolate : panicle lax ; the terminal fascicle nodding : calyx 8-cleft, 
9 or 10-flowered. Var. nan a, Bw. low: leaves 3-partcd, hastate, ovate and 
lanceolate, sometimes all simple : racemes panicled or simple. 1 — 3 f. S. 
5—1. PRIMULA. 21. 34. 
Exotic. 
aca'ulis, (primrose. 7|_.) leaves rugose, toothed, hirsute beneath : scape 1-flow- 
ered. 
auric"ula, (auricula primrose. 7J..) leaves serrate, fleshy, obovate : scape ma- 
ny-flowered : calyx mealy. 
14—1. PRUNELLA. 42. 39. 
vulga'ris, var. pennsylranica, (heal-all, self-heal. O. J. %.) leaves petioled, ob- 
long-ovate, toothed at the base : lips of the calyx unequal ; upper one trun- 
cate, awned : stem ascending. G— 12 i. S. 
12—1. PRUNUS. 3G. 92. 
Flowers in racemes. 
virginia'na, (wild cherry, rum cherry, cabinet cherry. O. w. M. 1}.) racemes 
erect, elongated : leaves oval-oblong, acuminate, unequally serrate, glab- 
rous both sides : petioles generally bearing 4 glands. In open fields the 
limbs of this tree spread out into an elegant oval top ; but in dense forests 
it grows to a very great height, with a few contracted branches. S. 
scroti' na, (choke-berry. O. w. J. Ij.) flowers in lax racemes : leaves oval short- 
acuminate, opake, doubly and acutely serrate : midrib bearded on each 
side towards the base : petiole with 2 glands. This and the preceding spe- 
cies have been confounded by many Botanists. S. 
canaden'sis, (O. w. !;>•) flowers in racemes : leaves glandless, broad-lanceolate, 
rugose, sharply serrate, pubescent both sides, tapering into the petiole. S. 
Exotic. 
spino'sa, (English sloe. fj.) peduncles solitary : leaves lance-oval, pubescent 
beneatli : fruit straight : branches thorny. 
cer"asus, (garden cherry, w. r. fj.) umbel sub-peduncled : leaves lance-ovate, 
glabrous, conduplicate. 
domes" tica, (plumb, w. M. Tj.) peduncles sub-solitary : leaves lance-ovate, 
convolute, branches thornless. Var . juliana, (damson plum) fruit oblong, 
blue. Var. claudiana, (sweet plum, horse plum) fruit round, at first green, 
becoming yellowish. Var. enucleata, (stoneless plum) the putamen obso- 
lete. 
21—1. PTERIS. 55.5. 
aquili'na, (common brake. O. Ju. TJ..) frond pinnate, 3-parted : barren branches 
doubly pinnate, with leafets lance-linear, obtusc-pinnatifid, toothed ; fertile 
branches pinnate, with leafets pinnatifid; divisions acutish, all ciliate. S. 
10—1. PTEROSPORA. 18. 51. 
androm"eda, (Albany beech-drops. E. r-y. Ju. ©.) scape purple, very tall 
bearing a many-flowered raceme : flowers lateral and terminal, nodding : 
peduncles filiform, longer than the flowers : lanceolate scales below, none 
above. 1 — 2 f. 
11—1. PUNICA. 36. 92. 
Exotic. 
grana'tum, (pomegranate. T?.) leaves lanceolate : stem woody. 
13—1. PYCNANTHEMUM. 42.39. 
Stamens exsert. 
in"canum, (wild basil, mountain mint. 0. w. r. Ju. 'll.) leaves oblong-ovate, 
