Polemonium. POLEMONIACE^. 149 



6-lobed : stamens inserted next the base : anthers oblong: ovules about 7 in each cell. 

 Proc. Am. Acad. viii. 279; Watson, 1. c. fig. 10-18. W. Nevada, on the banks of the 

 Truckee River, Watson. 



= = Texan and Mexican: pedicels erect or ascending, loosely and effusely paniculate : seeds 

 mucilaginous and spirilliferous when wetted, rather numerous. 



G. incisa, Bentll. Merely pubcrulent : stems slender and weak, diffusely branched from 

 the base, a foot or two high, leafy : leaves thin ; the radical and lower cauline slender- 

 petioled, roundish-ovate or obovate, acutely and incisely toothed or lyrately cleft; the 

 upper lanceolate, sparsely laciniate ; uppermost linear, more entire, sessile, and gradually 

 reduced to subulate bracts: pedicels an inch or two long, rigid: corolla rotate, deeply 5- 

 cleft (white or blue, half inch or less in diameter), deeply 5-lobed; the lobes ovate: fila- 

 ments filiform : anthers oblong-oval. DC. Prodr. ix. 312. G. Lind/teinteriana, Scheele in 

 Linn. xxi. 753. Shady banks and thickets, Texas. (Mex.) 



-) -1 Root perennial or base of stems lignescent. 

 H- Corolla (as far as known) rotate and blue: leaves rigid. 



G. rigidula, Benth. Glabrous or viscid-glandular: stems a span or so high, slender and 

 diffusely branched from a stout lignescent base : leaves mostly pinnately (or the upper- 

 most nearly palmately) parted or cleft into few or several lanceolate-linear or subulate 

 lobes: pedicels scattered, an inch or less long: corolla completely rotate (f to 1^ inches in 

 diameter), 5-parted; its lobes obovate: filaments filiform: anthers elongated-oblong: 

 ovules and seeds several in each cell. DC. 1. c. ; Gray, Proc. Am. Acad. viii. 280. G. 

 glandidosa, Scheele, 1. c., one of the viscid-glandular forms. (Corolla opening wide in after- 

 noon sunshine, closing at sunset, Luidhtimcr.) Rocky plains and hills, Texas and New 

 Mexico. (Adjacent Mex.) 



Var. acerosa, Gray, 1. c. More dwarf, rigid, and suffruticose : branches very leafy : 

 the leaves all with slender-subulate or acerose and somewhat pungent divisions : pedicels 

 short : flower rather smaller : anthers barely oblong. Northern New Mexico and borders 

 of Texas to Arizona. (Adjacent Mex.) 



G. csespitosa, Gray. Depressed-cespitose, with a stout lignescent caudex : leaves nearly 

 all densely crowded on the very short tufted shoots, viscid-puberulent, spatnlate or some- 

 what lanceolate, entire, thickish, half inch long or less: flowering shoots scape-like, 1 to 3 

 inches high, 1-5-flowered : flowers short-pedicelled : calyx narrow, 2 lines long, 5-cleft ; the 

 lobes slender-subulate : corolla and stamens not seen : ovules few in each cell. Proc. Am. 

 Acad. xii. 80. Rabbit Valley, Utah, on barren sandstone cliffs, at 7000 feet, L. F. Ward. 

 Its proper place in the genus quite uncertain, perhaps next G. subnuda. 



M- -H- <'orolla tubular-fun nelform: habit and foliage whollv of Pulemonium confertum, var. melll- 

 tum, but stiimens straight. 



G. Brandegei, Gray. Very viscid with glandular pubescence, pleasantly odoriferous, 

 cespitose : stems a span to near a foot high, simple : leaves all pinnate, elongated-linear in 

 circumscription ; the radical crowded and with short dilated and scarious sheathing petiole ; 

 the cauline scattered and similar : leaflets very small and numerous, 2 lines long, from oval 

 to oblong-linear, sessile, some simple, others 2-parted and so appearing verticillate: flowers 

 several in a short and racemiform leafy thyrsus : corolla golden yellow, trumpet-shaped, an 

 inch or less long, more than twice the length of the oblong or cylindraceous obtusely 5- 

 lobed calyx; its lobes oval and short : the stamens included in its throat (not declined or 

 curved) : anthers roundish : ovules few in each cell. Proc. Am. Acad. xi. 85. San Juan 

 Gap, and Waggon-wheel Gap, on the Rio Grande, S. W. Colorado, on the face of high per- 

 pendicular cliffs, T. S. Brandff/ee. 



Var. Lambornii. Corolla lurid-yellowish or greenish. Alpine region of Sierra 

 Blanca, S. Colorado, R. H. Lamborn, A. Gray. 



5. POLEM6NIUM, Tourn. GREKK VALERIAN, JACOB'S LADDER. 

 (Ancient name, from TtoXe/w,-, war, or more probably from the philosopher /7ota- 

 /^eor.) Herbs, of the cooler parts of the northern hemisphere, and one in the 

 southern ; the leaflets or divisions of the pinnate leaves sessile and not serrate. 

 Inflorescence racemiform, thyr^iform, or cymulose-paniculate ; the upper pedicels 

 ebracteate. Flowers blue or white, rarely purplish, usually showy, produced in 



