402 POLEMONIACEAE 



dissected. Flowers in cymules either on the ends of branches and in the forks of the 

 cyme, or capitately congested, rarely solitary in the leaf-axils. Calyx wholly herbaceous 

 or rarely with a chartaceous membrane-like area below the sinuses, obconic or campanu- 

 late, accrescent, the sinuses of the lobes distended as the lip of a pitcher, or replicate, 

 lobes triangular to acicular-attenuate. Corolla trumpet-shaped or narrowly funnelform, 

 the tube gradually expanding upward toward the limb often without a clear differentia- 

 tion between tube and throat, never truly salverform, lobes spatulate or lanceolate. 

 Stamens equally or unequally inserted on the throat or sometimes on the tube or at times 

 some on throat and some on tube, filaments equal or unequal in length. Pistil included 

 or exserted. Capsule ellipsoid to obovoid, the locules with 1-2 or sometimes 3 seeds, 

 campanulately spreading on dehiscence, margins of each folded back on their midvein. 

 Seeds developing mucilage or spiracles when wetted or not so affected. [Name Greek, 

 meaning mucilage, because of the mucilaginous exudate from the wetted seeds of some 

 of the species.] 



About 15 species, Alaska to Lower California and mountains of Bolivia to Patagonia. Type species, 

 CoUomia linearis Nutt. 



Plants annual. 



Leaves linear or lanceolate, entire; seeds 1 to each locule. 



Stems simple below, divaricately or cymosely branched above. 

 Stamens unequally inserted. 



Filaments equal, 1 mm. or less long; calyx-lobes unequal, the longer subequal to the corolla; 

 bracts much exceeding the flowers; corolla 1 cm. or less long; Gilliam County, Oregon. 



1. C. macrocalyx. 

 Filaments very unequal, the longest about 1 cm. long; calyx-lobes equal; corolla 2-3 times the 

 calyx, equal or longer than the upper leaves and bracts, 2-3 cm. long; Humboldt and 

 Trinity Counties, California. 2. C. Tracyi. 



Stamens equally inserted on the throat of corolla. 



Flowers 2 to several in a cluster; stamens inserted at top of throat, 1 or 2 sessile or subsessile, 



the rest with long filaments. 3. C. tinctoria. 



Flowers solitary or rarely 2 in the leaf-axils; stamens inserted at base of throat; anthers all 

 with long filaments, subequal or unequal in length. 4. C. tenelta. 



Stems simple and erect usually throughout, occasionally 1 or more from base, occasionally branched; 

 flowers in terminal heads and sometimes with stalked heads of flowers in upper leaf-axils. 

 Corolla 5-1 S mm. long, about twice as long as the calyx, pink or white. 5. C. linearis. 

 Corolla 20-25 mm. long, 3-4 times the length of the calyx, salmon-yellow with blue anthers. 



6. C. grandifiora. 

 Leaves lobed, toothed, or dissected, if entire the blade elliptic; seeds 2-3 to each locule. 



Leaves variously lobed or incised to pinnately dissected, blades thin; flowers pink; filaments of stamens 



unequal. 7. C. heterophylla. 



Leaves 3-toothed at summit or entire, blades thick; flowers blue to purple with yellow throat; filaments 

 of stamens equal. 8. C. diversifolia. 



Plants perennial. 



Leaves thick, entire, toothed or dissected, rarely over 2 cm. long; plants usually tufted alpines or subalpines. 

 Leaves simple, toothed, incised or lobed, blade usually elliptic in outline. 9. C. dcbilis. 



Leaves twice or thrice digitately dissected, usually reniform or orbicular in outline; volcanic peaks. 



10. C Larsenii. 

 Leaves thin, blade elliptic, 3-5 cm. long, coarsely serrate above, entire below. 



Corolla blue, 10-12 mm. long; plants from a slender taproot; Mount Mazama and Mount McLoughlin, 



Oregon. 11. C.masama. 



Corolla orange-red and yellow; plants from an elaborate system of rhizomes; Madera County, California. 



12. C. Rawsoniana. 



1. Collomia macrocalyx Leiberg. Bristle-flowered Collomia. Fig. 3897. 



Collomia macrocalyx Leiberg ex Brand, Rep. Spec. Nov. 17: 317. 1921. 



Erect annual 5-10 cm. high; stems divergently branched; cotyledons orbicular, on slender 

 petioles. Lower leaves petioled with elliptic blades, upper linear-lanceolate, 15-35 mm. long, sub- 

 sessile, puberulent ; flowers sessile or subsessile in densely bracteate cymules ; bracts leafy, linear- 

 oblanceolate, much exceeding the flowers and longer than cauHne leaves ; calyx 8-10 mm. long, 

 lobes unequally attenuate, the longer subequal to the corolla, canescently puberulent; corolla 

 narrowly funnelform, 8-10 mm. long, the tube appearing as though dilated upward, corolla 

 purplish (when dry) ; stamens unequally inserted in throat ; filaments less than 1 mm. long, about 

 equal, included; stigma included; capsule about equal to the calyx-tube, locules each 1 -seeded. 



Known only from near Lonerock and the forks of Cottonwood Canyon, Gilliam County, Oregon. Type 

 locality: near Lonerock. June. 



2. Collomia Tracyi H. L. Mason. Tracy's Collomia. Fig. 3898. 



Collomia tinctoria subvar. luxuriosa Brand, Rep. Spec. Nov. 17: 317. 1921. 

 Collomia Tracyi H. L. Mason, Madrofio 9: 253. 1948. 



Erect or spreading annual, 5-20 cm. high ; stems forked, glandular. Leaves linear to lanceo- 

 late, tapered at both ends, petioled or subsessile, 2-6 cm. long, those in the inflorescence barely 

 exceeding the flowers ; flowers in clusters of 2-5, terminal on the branches or in the axils of 

 the leaves and forks of the branches, clusters subtended by few leafy bracts ; calyx-lobes lanceolate- 

 attenuate, minutely glandular; corolla 15-25 mm. long, 3 times the calyx, subequal to slightly 

 exceeding the leaves of inflorescence, limb about 1 cm. broad, white to pink, tube sometimes 

 purple; stamens very unequally inserted, lowermost well down the corolla-tube and often 



