HYDROPHYLLACE.E 463 



P. aiiKEiiuin Piper Erythea vii, 174. " Perennial, erect, or nearly so, 

 15-24 inches high, glabrous below, sparsely viscid-puberulent above ; stems 

 terete, slightly wing-margined; caulme 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 deeply 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-ckft 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 half as 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. confer/turn 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. 



ORDER LXIV HYDROPHYLLACE^ 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 gemmate 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 very 

 many, pendulous or when numerous almost horizontal. Fruit 

 a 2-valved capsule, 1-celled with 2 parietal placentae, or incom- 

 pletely 2-celled by the approximation or meeting of the placentae, 

 or even completely 2-celled by their union in the axis. Seeds' 

 with a close and usually reticulated or pitted coat, and a small 



