ISO 
PTEROSPORA—PYRUS. 
PTEROSPORA. 12—1. (Erica.) [From pteron, a wing, spoYa, seed.] 
androrn''L(ia, (Albany beech-drops, r-y. Ju. ©.) scape purple, very tall, bear- 
ing a many-flowered raceme; flowers lateral and terminal, nodding; pe¬ 
duncles Aliform, longer than the flowers; lanceolate scales below, none 
above. 1-2 f. 
PTJLMQNARIA. 5—1. (Boraginet e.) [From pul-mo, the lung, so called on account of its effi¬ 
cacy in diseases of the lungs.] 
virgivJ'ica , (h. M. J. r 2|_.) smooth; stem erect; radical leaves obovate, oblong, 
obtuse leaves of the stem narrower; flowers in terminal racemes or fasci¬ 
cles ; calyx much shorter than the lube of the corolla ; segments lanceolate, 
acute ;/leaves somewhat glaucous p flowers large, bright blue; Plant be¬ 
comes black by drying. 
officina'lis , (spotted lung-wort, b. M. flj-.) leaves ovate, hairy, generally speck¬ 
led with white on the upper side; the lower leaves on long petioles, the 
upper ones sessile; flowers violet-blue. 12 i. Ex. 
PUNIC A. 11—1. (Rosacea.) [From puntcus, Carthaginian.] 
grcmci'tum , (pomegranate, T?.) leaves lanceolate ; stem woody. Ex. 
2 J YCNANTHEMITM. 13—1. ( Labiata.) fFrom ’^knos, dgnse, Af/ios, flower, on account of 
its crowded inflorescence.] 
A. Stamens exsert. 
in"canurn. (wild basil, mountain mint, w. r. Ju. % ) leaves oblong-ovate, acute, 
sub-serrate, white-downy ; flowers in compound heads, lateral ones pedun¬ 
cled ; bracts setaceous. 1-5 f. 
arista'turn, (w. Au. fl]~) leaves lance-ovate, sub-serrate, on very short pet ioles, 
whitish; heads sessile; bracts awned ; flowers very small, in one or two 
sessile whorls 'and a terminal head; bracts and calyx terminated by long 
awns. \ 
linifo'lium , (Virginian thyme, w. Ju. 2[.) stem straight, much branched, some¬ 
what scabrous; leaves linear, 3-nerved, very entire, smooth; heads termi¬ 
nal, in a fasciculate corymb, stem 12-18 inches high, with triehotomous, fas- 
tigiate branches; flowers minute, shorter within. Woods. 
B. Stamens included . 
verticillcdturn, (w. Au..7]..) leaves lance-ovate, sometimes toothed; whorls ses¬ 
sile, compact; bracts acuminate. 2 f. Mountains. 
lance ala'turn, leaves linear-lanceolate, entire, veined ; heads terminally ses¬ 
sile, in fascicled corymbs. 
PYROLA. 10—1. (Erica.) [Fro mpyrus] a pear, so called on account of the shape of the leaf.] 
rotundifo'lia , (shin-leaf,-pear-leaf wintergreen, w. J. ) style,declined ; leaves 
rounded, or broad-oval, obsolete]y serrulate,sub-coriaceousjshining; petiole 
about as long as the lamina; scape many-flowered. 6-12 i. 
ellip"tica, (g-w. Ju. TJ..) leaves membranaceous, elliptical-ovate, serrulate, ra¬ 
ther acute, lamina longer than the petiole; scape nearly naked ; bracts sub¬ 
ulate; calyx 5-toothed ; style declined ; scape 10 i. 
asarifo’lia , (g-w. Ju. flp.) leaves reniform, coriaceous, half as long as the dila¬ 
ted petiole; racememanv-flowered; stigmaclavate; the disk elongated and 
5-lobed. Dry woods. 
secun'da, (one-sided wintergreen, g-w. Ju. %.) stamens erect; style straight; 
leaves ovate, acute; secund. 2-3 i. Sandy woods. 
nnijlo'ra , (J. 9J.) flower solitary; leaves orbicular, serrate; stigma acute; 
style straight, 5-toothed; flower terminal, large, white, flagrant, nodding, 
s Chiefly in northern latitudes; rare. 
« 
PYRUS. J1—5. (Rosacea.) [Origin of the name doubtful.] 
corona'ria, (crab-apple, w. r. M. k>.) leaves broad-oval, at the base rounded, 
sub-angled or sub-lobed, serrate, smooth; peduncles corymbed. Flowers 
sweet-scented. 
commit 1 nis, (pear, w. r. M. T^.) leaves ovate, serrate, (rarely entire;) peduncles 
corymbed. Ex. 
maLlus, (apple, w. r. M. T?.) flowers in sessile umbels; leaves oval e-oblong, 
acuminate, serrate, glabrous ; claws of the petals shorter than the calyx; 
styles glabrous. Var. sylvestris , (wild-apple,) leaves ovate, senate; fruit 
