Polemonlum. POLEMONIACE^. 149 



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

 Proc. Am. Acad. viii. 279; Watson, 1. c. fig. 1(3-18. — \V. JS'cvada, on the banks of the 

 Truckee Kivcr, Watson. 



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

 mucilaginous and spiriiliferous when wetted, rather numerous. 



G. incisa, Benth. Merely puberulcnt : stems slender and weak, diffusely branched from 

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

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

 tipper 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. Lindheimtriana, iicht^eie in 

 Linn. xxi. 703. — Shady banks and thickets, Texas. (Mex.) 



H i-~ Root perennial or base of stems lignescent. 



++ 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. 

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

 noon sunshine, closing at sunset, Lbidheimer.) — 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. caespitosa, Gray. Depressed-cespitose, with a stout lignescent caudex : leaves nearly 

 all densely crowded on the very short tufted shoots, viscid-puberulent, spatulate 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. 



-w- ++ Corolla tubular-funnelform : habit and foliage wholly of Polemonium confertum, var. melli- 

 ttdii, but stamens straight. 



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

 ccspitose : stems a s\mn 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-shaj)ed,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. Brandegee. 



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

 Blanca, S. Colorado, li. H. Lamhorn, A. Gray. 



4. POLEMONIUM, Tourn. Greek Valerian, Jacob's Ladder. 

 (Ancient name, from TtoXefW^', war, or more probably from the philosopher TloXt-'- 

 fioii'.) — 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, thyrsiform, or cymulose-paniculate ; the upper pedicels 

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



