HYDROPHYLLACEZ 463 
P. amenum Piper Erythea vii, 174. ‘‘ Perennial, erect, or nearly so, 
15-24 inches high, glabrous below, sparsely viscid-puberulent above; stems 
terete,slightly wing-margined; cauline 4 or 5, 18 inches long; leaflets 15-21, 
lanceolate, sessile, attenuately acute, 1-2 inches long :inflorescence leafy- 
bracteate, open, the flowers in clusters of 2-4 on slender peduncles ; bracts 
3 to 9-foliolate ; calyx peeply 5-cleft, 5 lines long, viscid-pilose, the narrow 
acute lobes about twice as long as the tube; corolla pale blue, 6-10 lines 
long; the broad obtuse lobes exceeding the tube; filaments dilated at base, 
pilose-appendaged ; style 3-cleft at the apex included ; seeds 3-4 in each cell. 
Humtulips, Chehalis Co. Washington. ” | 
P. luteum. Slightly pubescent: stems slender, ascending, 6-18 inches 
long leafy, cymosely 3-9-flowered: leaflets 11-21, oblong to almost lanceo- 
late, acute, or the terminal ones rounded at the apex, 2-8 lines long, the 
lower ones smallest: calyx open-campanulate, 4-6 lines long, cleft nearly 
to the base, the ample lobes lanceolate, often more or less acuminate: 
corolla yellow, 8-10 lines long, the ample obovate lobes 3 or 4 times as 
long as the tube: filaments slender, pubescent at base, about halfas long as 
the corolla-lobes. In forests of the Cascade Mountains Oregon. 
§ 3 Leaflets very small and crowded so as seemingly to be ver- | 
ticillate. Inflorescence capitate-congested or spiciform. Corolla 
strictly or even narrowly funnelform ; its tube more or less exceed- 
ing the oblong or cylindraceous calyx, prominently longer than 
its lobes. Filaments naked or nearly so, not dilated at base, usu- 
ally inserted on the middle of the tube, or occasionally adnate 
higher. 
 p. econfertum Gray Proc. Acad. Philad. 1863. Stems 10-12 inches 
high from a tufted rootstock, glandular-pubescent and viscid, musky-frag- 
rant: petioles of the radical leaves conspicuously scarious-dilated and 
sheathing at base: leaflets 1-3 lines long, mostly 2-3-divided and so appear- 
ing as if in fascicles or whorls; the divisions from round-oval to oblong- 
linear: flowers densely crowded, heavy-scented: corolla deep blue, 6-12 
lines long, its rounded lobes 2-3 lines long: ovules about 3 in each cell. 
Bleak points on the highest mountains Idaho to the Rocky Mountains and 
California. 
OrperR LXIV HYDROPHYLLACEZ Lindl. Nat. Syst. 271. 
Herbs, or rarely shrubs, with colorless insipid juice, alter- 
nate or sometimes opposite leaves without stipules, and mostly 
a scorpioid bractless inflorescence or the scorpioid cymes more 
commonly reduced to geminate or solitary false spikes or racem- 
es which in descriptions may be termed spikes or racemes. 
Calyx 5-parted or nearly 5 sepalous inferior and free from the 
ovary. Hypogynous disk at the base of the ovary often con- 
spicuous. Corolla regularly 5-lobed, with the 5 stamens borne 
on the base or lower part, and alternate with its lobes. Styles 
2, distinct or partly united, or rarely completely united: stigma 
terminal. Ovules amphitropous or anatropous, from 4 to ver 
many, pendulous or when numerous almost horizontal. Fruit 
a 2-valved capsule, 1-celled with 2 parietal placentsx, or incom- 
pletely 2-celled by the approximation or meeting of the placentz, 
or even completely 2-celled by their union in the axis. Seeds 
with a close and usually reticulated or pitted coat, and a small 
