HYDROPHYLLACEAE (WATERLEAF FAMILY) 405 



narrowly campanulate, about as long as the corolla-tube: corolla blue, tubular- 

 campanulate, 12-16 mm. long, the broadly elliptic lobes a little longer than 

 the calyx: filaments very slender, the base slightly dilated and sparsely pilose: 

 seeds 2-3 in each cell. Yellowstone Park and probably Idaho and Montana. 



6. Polemonium pterospermum Nels. & Ckll. Proc. Biol. Soc. Wash. 16: 45. 

 1903. Low, 1-2 dm. high, glabrate below, glandular-puberulent above; 

 stems several, spreading or decumbent at base, very leafy, especially above: 

 leaves 4-6 cm. long; the segments oblong, acute, 8-12 mm. long, the lower 

 distinct and subpetiolate, the terminal crowded and slightly confluent: 

 flowers in congested corymbs: calyx-lobes about equaling the campanulate 

 tube: corolla purple, campanulate, 10-12 mm. long, quite as broad; the tube 

 short, the lobes broadly ovate, moderately obtuse: filaments shorter than the 

 corolla, somewhat incurved, glabrous, but involved in dense fine pubescence 

 at the insertion: style filiform; the stigmas narrowly linear, exserted: ovules 

 few, apparently only 2 or 3 maturing: the seeds narrowly wing-margined and 

 subconcave ventrally. Northern New Mexico, probably extending into 

 Colorado. 



7. Polemonium viscosum Nutt. PL Gamb. 154. 1848. Somewhat viscid 

 throughout; rhizome somewhat fleshy; stems erect, 5-12 cm. high: leaflets 

 30-40, small, oblong to suborbicular, crowded or sub imbricate: flowers in 

 capitate clusters: calyx campanulate, very glandular and often pilose: corolla 

 blue, twice as long as the calyx, broadly funnelform, 14-18 mm. long, the lobes 

 rounded-obtuse: stamens and style about as long as the corolla. (P. Grayanum 

 Rydb. 1. c. 31 : 635. 1904J Rare ; on the highest of the Rocky Mountain peaks. 



8. Polemonium confertum Gray, Proc. Am. Acad. Sci. Phila. 73. 1863. 

 Perennial, 1-2 dm. high, glandular- viscid and musk-scented, pubescent above: 

 leaflets very numerous, small, 3-8 mm. long, mostly as if whorled or fascicled, 

 being 2-5-divided and sessile, segments either broadly oval or linear-oblong: 

 flowers capitate-crowded, at length racemose-spicate, somewhat nodding, 

 honey-scented: lobes of the calyx narrow, half as long as the cylindrical or 

 oblong tube: corolla 2-3 cm. long, blue, the narrow funnelform tube longer 

 than the calyx and 2-3 times longer than the rounded lobes: filaments barely 

 hairy and scarcely dilated at base. In the higher mountains; from Colorado 

 to Montana. 



9. Polemonium mellitum (Gray) A. Nels. Bull. Tprr. Bot. Club 26: 354. 

 1899. Viscid-pilose, tufted, the stems erect or spreading: radical leaves long; 

 the leaflets in verticils of 3-4 or merely paired, oval to broadly linear, thin: 

 inflorescence loosely spicate to racemose, bracteose : the lanceolate calyx-lobes 

 scarcely shorter than the tube: corolla white or ochroleucous, tubular, more 

 than twice as long as the calyx (20 mm. or more), the lobes one third as long 

 as the tube. Herbage heavy musk-scented, but the flowers "honey-sweet." 

 In the mountains of our range to Nevada. 



9a. Polemonium mellitum speciosum (Rydb.) A. Nels. Similar in all re- 

 spects except that the leaves are often merely paired and the flowers tinged with 

 blue. (P. speciosum Rydb. 1. c. 28: 29.) Mount Garfield in Colorado. 



10. Polemonium Brandegeei (Gray) Greene, Pitt. 1: 126. 1887. Very 

 viscid with glandular pubescence, pleasantly odoriferous, caespitose; stems 

 1-3 dm. high, simple: leaves all pinnate, elongated-linear in outline, the rad- 

 ical crowded, the cauline scattered; leaflets very small and numerous, oval 

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

 flowers several in a short and racemiform leafy thyrsus: corolla golden-yellow, 

 trumpet-shaped, with very narrow tube, 20-25 mm. long. Gilia Brandegeei. 

 Colorado. 



99. HYDROPHYLLACEAE L. WATERLEAF FAMILY 



Herbs or shrubs with opposite or alternate leaves. Flowers regular, 5- 

 merous in racemes or spikes (often scorpioid), or capitate, or solitary. Sta- 

 mens near the base of the corolla, alternate with its lobes. Styles 2, distinct 



