HYDROPHYLLACE^ 463 



P„ amoenum Piper Erythea vii, 174. " Perennial, erect, or nearlv 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-clefr, 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. lntenin. 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. confertuin 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, it3 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 HYDROPHYLLACEiE 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 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 



