‘DIDYNAMIA, GYMNOSPERMIA, Ss? 
Flowers verticillate, imbricately spiked, bractes of the 
-verticilli large and cihate. 
‘ Species. “1. P. vulgaris. 8B. pennsy Ivdnica. A mere 
. < eae variety of the preceding, which is certainly an introduced 
- plant, never appearing far beyond the’precincts of habita- 
tions. 
A small European genus. 
416. SCUTELLARIA. Z. (Skull-cap.) 
Margin of ‘the Cali«z entire, after flowering 
closed with a galeate lid. ‘Fube of the corolla 
elongated. 
Herbaceous; flowers solitary, axillary, naked, or in ter- 
minal or axillary bracteate racemes, bractes 1-flowered. 
' (Seeds granularly tuberculate.) 
4 { Flowers axillary, solitary. 
: _ Species. 1.8.-galertculata. Branching; leaves cordate- 
lanceolate, crenate, under side pulverulently pubescent, 
paler; flowers axillary. Haz. On the margins of swamps. 
ew se common. eee the synonym of Pursh- 
2. p. 412. (2. pareula: * gracilis. Stem mostly sim- 
ple; leaves remote, et Fae dentate, ‘smooth and 
sessile, scabrous on the margin, ones smaller, ene 
tire; fowers axillary. Has. in ihickes on the amargin 
of the Schuylkill, near Phi 8S. galericulata? 
Pu, Oss. Perennial. Stem 12to 18 inches high, slen- 
der, erect, and seldom ‘branched; leaves 10 to 12 lines 
long, and nearly the same in breadth, lower ones obtuse, 
dentures remote, under side prominently veined; flowers 
uncommonly small, pale blue. 4. * ambigua. ‘Low, sub- 
j decumbent and divaricately branched; leaves sessile, 
| _ vate, remotely and rarely serrate, sabhirsute above; flow- 
| ers very small, axillary. HAs. In dry and open forests, 
Ohio, ‘The habit of this small species is very different 
from that of the preceding, yet at the same time they 
are closely allied. Oss. Perennial. Stem 4 to 6 inches 
high, smooth, mostly purple. Leaves approximate, from 
Sto 8 lines long, 3 or 4 wide, prominently veined and 
smooth beneath, mostly acute, upper ones entire, lower 
with very few serratures, asperate on the margin, the up-_ 
‘per surface scattered with short hirsute hairs. Fl a 
very smatl, and oe &. 28-20 Pa. 
