12 LINACEAE 



3. Linum Lewisii Pursh. Western Blue Flax. Fig. 2990. 



Linum Lewisii Pursh, Fl. Amer. Sept. 210. 1814. 

 Linum deciirrens Kell. Proc. Calif. Acad. 3: 44. 1863. 

 Linum Lyallanum Alef. Bot. Zeit. 25: 251. 1867. 

 Linum Lewisii var. alpicola Jepson, Fl. Calif. 2: 398. 1936. 



Perennial, glabrous throughout, the stems 2-6 dm. high, often branched at the base. Leaves 

 erect or ascending, 1-2 cm. long, linear, acute, sessile, erect or ascending; bracts similar to the 

 leaves; fruiting pedicels 1-3 cm. long; sepals ovate, 5 mm. long, not ciliate; petals blue or rarely 

 white, 15-20 mm. long; styles distinct; capsule globose, 6-10 mm. long; septa ciliate. 



Mountain meadows and grassy slopes, mainly Arid Transition Zone; Alaska to southern California and 

 northern Mexico, east to Manitoba, Montana, Wisconsin, and Texas. Type locality: valleys of the Rocky Moun- 

 tains. May-July. 



4. Linum puberulum (Engelm.) Heller. Desert Yellow Flax. Fig. 2991. 



Linum rigidum var. puberulum Engelm. in A. Gray, Smiths. Contr. 3^: 25. 18S2. 

 Linum puberulum Heller, Plant World 1: 22. 1897. 

 Cathartolinum puberulum Small, N. Amer. Fl. 25: 80. 1907. 



Pale green perennial, 5-25 cm. high, finely puberulent throughout. Leaves more numerous 

 belovir, sparse above, sessile, subulate, 0.5-1.5 cm. long; petals yellow, 12-15 mm. long; capsule 

 ovoid, 3.5-4.5 mm. high, surpassed by the sepals. 



Desert ranges, Upper Sonoran Zone; eastern Mojave Desert, California, east to Colorado and Texas. Type 

 locality: Santa Fe to the Cimarron River, New Mexico. May-July. 



5. Linum digynum A. Gray. Northwestern Yellow Flax. Fig. 2992. 



Linum digynum A. Gray, Proc. Amer. Acad. 7: 334. 1868. 

 Cathartolinum digynum Small, N. Amer. Fl. 25: 78. 1907. 



Glabrous and glaucescent annual, the stems simple below, corymbosely branched above, 1-4 

 dm. high. Leaves mainly opposite and rather distant, the lower somewhat spatulate, the upper 

 linear-oblong to elliptic, 8-25 mm. long, entire; bracts reduced, lanceolate-acuminate, serrate; 

 sepals persistent, 2.5 mm. long, glandular-toothed; petals yellow, 3.5-4 mm. long; staminodia 

 wanting ; styles 2, united nearly to the middle ; capsule ovoid, shorter than the sepals. 



Moist meadows and bogs, mainly Arid Transition Zone; Spokane County, Washington, southward mainly 

 east of the Cascade Mountains to the central Sierra Nevada, California. Type locality: Mariposa Trail, Sierra 

 Nevada, California. June-July. 



6. Linum drymarioides Curran. Drymaria Dwarf Flax. Fig. 2993. 



Linum drymarioides Curran, Bull. Calif. Acad. 1: 152. 1885. 

 Hesperolinon drymarioides Small, N. Amer. Fl. 25: 84. 1907. 



Stems dichotomously branched from near the base, 1-3 dm. high, sparingly short-yillous. 

 Leaves few, mostly broadly ovate, 3-10 mm. long, abruptly mucronate, sessile, flat, minutely 

 glandular-toothed ; bracts usually narrower and smaller than the leaves ; fruiting pedicels slender, 

 about equaling or exceeding the calyx ; sepals 2.5-3 mm. long, lanceolate, acuminate, finely_ glan- 

 dular-toothed ; petals pink, scarcely equaling to slightly exceeding the sepals ; capsule ovoid, 2.5 

 mm. long. 



Dry rocky slopes. Upper Sonoran Zone; Inner Coast Ranges, Colusa and Lake Counties, California. Type 

 locality: near Epperson's, Lake County. June-Aug. 



7. Linum adenophyllum A. Gray. Glandular Dwarf Flax. Fig. 2994. 



Linum adenophyllum A. Gray, Proc. Amer. Acad. 8: 624. 1873. 

 Hesperolinon adenophyllum Small, N. Amer. Fl. 25: 85. 1907. 



Stems dichotomously branched above, 1-3 dm. high, minutely pubescent, especially above the 

 nodes. Leaves linear-lanceolate, clasping, involutely folded, conspicuously and densely glandular- 

 toothed; fruiting pedicels slender, longer than the calyx; sepals oblong-lanceolate to linear- 

 lanceolate, 2.5-3 mm. long, sparingly and inconspicuously glandular-toothed; petals yellow, 4-6 

 mm. long; filaments filiform; capsule ovoid, shorter than the sepals. 



Open hillsides, Upper Sonoran and Transition Zones; California Coast Ranges in Mendocino and Lake 

 Counties. Type locality: near Clear Lake, Lake County. June-July. 



8. Linum Clevelandii Greene. Cleveland's Dwarf Flax. Fig. 2995. 



Linum Clevelandii Greene, Bull. Torrey Club 9: 121. 1882. 

 Hesperolinon Clevelandii Small, N. Amer. Fl. 25: 85. 1907. 

 Linum Clevelandii var. petrophilum Jepson, Fl. Calif. 2: 400. 1936. 



Stems 1-3.5 dm. high, simple below, dichotomously branched above, puberulent or glabrous. 

 Leaves linear, narrowed at the sessile base, 1-2 cm. long, acutish, entire, somewhat involute, 

 pubescent above; bracts similar but smaller; pedicels 6-20 mm. long; sepals lanceolate, 2-2.5 

 mm. long, acute, the outer entire, the inner obscurely and sparsely glandular on the margins, 

 glabrous ; petals yellow, 3.5-4 mm. long ; staminodia present, 2-lobed ; capsules ovoid, slightly 

 exceeding the calyx. 



Dry ridges, usually associated with chaparral, Upper Sonoran Zone; North Coast Ranges, south to the 

 Mount Hamilton Range, California. Type locality: Allen's Springs, Lake County. May-July. 



