376 PRIMULACEAE (PRIMROSE FAMILY) 



Anthers at ^<"^t twice as long as the stamineal tube , . . 5. D. pa iciflonim. 

 Capsule circums.nssUe; filaments short, free or nearly so . . . 6. D. coojugeos, 



1. Dodecatheon radicatvim Greene, Erythea 3: 37. 1895. Glabrous: conn 

 short, fibrous-rooted or with a semblance of a taproot: leaves few, rather large 

 and thin, 8-20 cm. long, mostly oblaneeolate or spatulate, obtuse: scape 

 moderately stout, 2^ dm. high; bracts lanceolate; flowers several to many: 

 calyx-lobes lanceolate, about equaling the tube: corolla pinkish or bluish- 

 violet; the lobes oblong, obtuse: stamineal tube very short, or wanting; anthers 

 acute, 6-8 mm. long: capsule narrowly ovate, but slightly surpassing the calyx- 

 lobes. {D. multiprum Rydb. Bull. Torr. Bot. Club 31: 631. 1904.)— Wet 

 copses and shaded banks; New Mexico to Wyoming. 



2. Dodecatheon philoscia A. Nels. Bull. Torr. Bot. Club 28: 227. 1901. 

 Glabrous throughout: scape 1.5-3 dm. high, very slender, few-flowered: 

 leaves few, elliptic to oblong, mostly obtuse: bracts oblong- caljrx-lobes 

 lanceolate, 2-3 mm. long, longer than the tube: united part of the corolla with 

 a purple wavy line; lobes deep sky-blue, narrowly oblong: united filaments 

 1 mm. or less long, yellow; anthers broadly subulate; connective linear- 

 acuminate: capsules on slender erect pedicels (which are 2-4 cm. long), sub- 

 cylindric, about 4 mm. in d'ameter and 1 cm. long, twice as long as the calyx, 

 splitting only at the su mm it.. (D. sinuatum, Rydb. 1. c. 33: 148.) — Borders of 

 shaded mountain streams; Wyoming and Colorado. 



3. Dodecatheon Cusickii Greene, Pitt. 2: 73. 1890. More or less pubescent 

 and glandular: leaves broadly to narrowly lanceolate, entire, or dentate 

 toward the apex, usually obtuse, 3-9 cm. long, narrowed below to a winged 

 pet'ole: scapes 7-15 cm. high, few-flowered; bracts lanceolate, lobes of the 

 calyx lanceolate, acute, but Mttle longer than the tube: corolla-lobes dark 

 purple with yellow base and a dark purple Une at the mouth of the tube; 

 stamen-tube less than 2 mm. long; anthers yellow with a black stripe through 

 the center: capsule ovoid, acute, scarcely surpassing the calyx, 5-valved from 

 the apex. [D, pubervlmta Heller, Bull. Torr. Bot. Club 24: 311 1897; D. 

 puberulum (Nutt.) Piper, Contrib. Nat. Herb. 11: 445. 1906.]- Extending 

 mto Wyoming and Montana from Oregon and Washington. 



4. Dodecatheon salinum A. Nels. 1. c. 26: 131. 1899. Crown short; roots 

 numerous, fascicled, slender but somewhat fleshy; leaves widely spreading or 

 ascending, glabroup, elliptic, sometimes obovate or oblaneeolate, obtuse, 

 2-4 cm. long, on slender petioles: scape slender, 10-20 cm. high, glabrous as 

 is also th3 inflorescence, hracts few, oblong or spatulate, mostly obtusish; 

 flowers few to several: segments of the corolla hlac-pu'-ple, the undivided 

 part yellowish-white with an indistinct purplish ring near the base: anthers 

 purple with whitish margins: capsule elliptic, somewhat exceeding the calyx, 

 splitting from the obtuse summit into two equal valves. — Wet alkali soils; 

 western Wyoming and in Utah and Idaho. 



5. Dodecatheon pauciflorum (Durand) Greene, 1. c. 72. 1890. The short, 

 perpendicular crown solitary, simple, producing neither bulbets nor offsets; 

 herbage glabrous, glandless: leaves deep green, entire, subereet, one fourth 

 or one third as long as the scape: bracts of the few-flowered umbel lanceo- 

 late : segments of corolla rich lilac-purple, the undivided part yellow, with a 

 narrow scalloped ring of deep purple midway between the base of the seg- 

 ments and the stamen-tube: stamen-tube about half as long as the anthers, 

 yellow; anthers purple: capsule crustaceous, 10-14 mm. long, slender, nearly 

 cylindrical, acute, opening by 5 short teeth. [D. cylindrocarpum Rydb. Mem. 

 N. Y. Bot. Card. 1: 305. 1900 ;-D. imlgare (Hook.) Piper, 1. c.]— The common- 

 est species of our range and extending far to the northwestward. 



6. Dodecatheon conjugens Greene, Erythea 3: 40. 1895. Short crown 

 with a dense fascicle of fleshy fibrous roots that are deciduous from it after 

 the flowering; whole plant glabrous: leaves obovoid and elliptic, 5-14 cm. 

 ,'ong including the distinct petiole, obtuse, entire: scape stoutish, 1-2 dm. 

 high; umbel few-flowered; flowers large: corolla deep purple, varying to rose- 

 red and to white: anthers distinct, obtuse, the connective lanceolate, acumi- 



