PRINOS—PTBSRIS. 
129 
ucau'iis, (primrose, Of.) leaves rugose, toothed, hirsute beneath ; scape 1-flow- 
ered. Ex. 
uurid'ula , (auricula primrose, 94-.) leaves serrate, lleshy, obovate ; scape many- 
flowered; calyx mealy. Eic. 
ve'ris , (cowslip, r-y. Of.) leaves rugose, toothed ; limb of the corolla concave; 
neck of the tube oblong; calyx inflated. 
cla'tior , (oxlip primrose, w. y. Tf.) stalk many-flowered; limb of the corolla 
flat; flowers in an umbel, pale yellow, the centre deeper yellow ; this is sup¬ 
posed to be a hybrid, between the primrose and cowslip. 
vulgaris, the English botanists describe the acaulis under this name ; it is the 
polyanthus of the florist. 
'PRTNOS, 6—1, ( Rkctmni .) 
verticilta'lus, (winter berry, w. J. Ty) stern much branched ; leaves deciduous, 
oval, serrate, acuminate, pubescent beneath ; flowers dioecious, G cleft; ste- 
ril ones axillary, sub-umbeliate ; fertile ones aggregated, berries globose. 
Berries bright scarlet. 6-8 f. Swamps. 
glaber , leaves evergreen, wedge-form, coriaceous, shining ; pedicels axillary, 
mostly 3-flowered ; berries black and shining, globose. 3-4 f. Ink-berry. 
( IIydroQharid.es .) [From Proserpina, fabled as queen of the lower 
3—3. 
PROSERPINACA, 
regions.] 
palus^tris, (mermaid-weed, An. |f>.) upper leaves lance-linear, serrate; lower 
ones often pinnatifid ; fruit angular, acute, stern procumbent. Wet places. 
pcdina'la, distinguished from the former, by having the leaves all finely pec¬ 
tinate, and the fruit with rather obtuse angles. 
\ ' 
PRUNELLA. 13—1. (Labiates.) [From pruna, a burn, because it heals burns.] 
- milga'ris, var. pennsylva?dca 7 (heal-all, self-heal, J. %.) leaves petioled, ob¬ 
long-ovate, toothed at the base; lips of the calyx unequal; upper one trim- 
cate, awned ; stem ascending. 6-12 i. 
PRUNES. 12—1. ( Rosacea .) [ JPrunus , the Latin name for plum.] 
A. Flowers in racemes. 
■, Virginia/nou , (wild-cherry, rum-cherry, cabinet-cherry, w. M. Ty) racemes 
erect, elongated; leaves oval-oblong,acuminate, unequally serrate, glabrous 
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. 
. seroti'na , (choke-cherry, w. J. Ty) 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. 
mnaden"sis , (w. Ty) flowers in racemes; leaves glandless, broad-lanceolate, 
rugose, sharply serrate, pubescent both sides, tapering into the petiole. 
tpino'sa, (English sloe, by) peduncles solitary; leaves lance-oval, pubescent 
beneath; fruit straight; branches thorny. Ex. 
cera'sns , (garden cherry, w. r. Ty) umbel sub-peduncled; leaves lance-ovate, 
glabrous, condupiicate. Ex. 
domes n lica, (plum, w. M. Ty) peduncles sub-solitary ; leaves lance-ovate, con¬ 
volute; branches thornless. Var. juliana, (damson plum,) fruit oblong, 
blue. Var. claudiana , (sweet plum, horse-plum,) fruit round, at first 
green, becoming yellowish. Var. enudeata , (stoneless plum,) the putamen 
obsolete. Ex. 
PSORA-LEA. 16—10. ( Leguminosce .) [From psoralens^ scabby ; the plant being more or less 
glandular, which gives it a scurfy appearance.] 
■ esculcn"la. (bread-root, b. J. %.) villose, leaves quinate-digitate, leafets lance¬ 
olate, unequal, flat, entire, spikes axillary, dense-flowered 1 ; divisions of the 
calyx lanceolate, scarcely as long as the corolla; legumeensiform, beaked; 
root fusiform. The root is used for food by the Indians. 
PTERIS. 21—1. ( Filices .) [From pteron, a wing, so called from the likeness of its leaves to 
wings.] 
aquili'na, {common brake, Ju. 7|_.) frond pinnate, 3-parted ; barren branches 
doubly pinnate, with leafets lance linear, obtuse pinnatifid, toothed ; fertile 
branches pinnate, with leafets pinnatifid ; divisions aeutish, all ciliate. 
